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<a href="prj_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*============================================================================</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"></span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> WCSLIB 4.18 - an implementation of the FITS WCS standard.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (C) 1995-2013, Mark Calabretta</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> This file is part of WCSLIB.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> WCSLIB is free software: you can redistribute it and/or modify it under the</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> terms of the GNU Lesser General Public License as published by the Free</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> Software Foundation, either version 3 of the License, or (at your option)</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> any later version.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> WCSLIB is distributed in the hope that it will be useful, but WITHOUT ANY</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> more details.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> along with WCSLIB. If not, see http://www.gnu.org/licenses.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"></span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> Direct correspondence concerning WCSLIB to mark@calabretta.id.au</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> Author: Mark Calabretta, Australia Telescope National Facility, CSIRO.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> http://www.atnf.csiro.au/people/Mark.Calabretta</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> $Id: prj.h,v 4.18 2013/07/13 10:00:04 mcalabre Exp $</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">*=============================================================================</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">*</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">* WCSLIB 4.18 - C routines that implement the spherical map projections</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">* recognized by the FITS World Coordinate System (WCS) standard. Refer to</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">*</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">* "Representations of world coordinates in FITS",</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">* Greisen, E.W., & Calabretta, M.R. 2002, A&A, 395, 1061 (Paper I)</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">*</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">* "Representations of celestial coordinates in FITS",</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">* Calabretta, M.R., & Greisen, E.W. 2002, A&A, 395, 1077 (Paper II)</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">*</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">* Refer to the README file provided with WCSLIB for an overview of the</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">* library.</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">*</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">*</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">* Summary of the prj routines</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">* ---------------------------</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">* These routines implement the spherical map projections defined by the FITS</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">* WCS standard. They are based on the prjprm struct which contains all</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">* information needed for the computations. The struct contains some members</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">* that must be set by the user, and others that are maintained by these</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">* routines, somewhat like a C++ class but with no encapsulation.</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">*</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">* Routine prjini() is provided to initialize the prjprm struct with default</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">* values, prjfree() reclaims any memory that may have been allocated to store</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">* an error message, and prjprt() prints its contents.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">*</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">* Setup routines for each projection with names of the form ???set(), where</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">* "???" is the down-cased three-letter projection code, compute intermediate</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">* values in the prjprm struct from parameters in it that were supplied by the</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">* user. The struct always needs to be set by the projection's setup routine</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">* but that need not be called explicitly - refer to the explanation of</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">* prjprm::flag.</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">*</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">* Each map projection is implemented via separate functions for the spherical</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">* projection, ???s2x(), and deprojection, ???x2s().</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">*</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">* A set of driver routines, prjset(), prjx2s(), and prjs2x(), provides a</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">* generic interface to the specific projection routines which they invoke</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">* via pointers-to-functions stored in the prjprm struct.</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">*</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">* In summary, the routines are:</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">* - prjini() Initialization routine for the prjprm struct.</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">* - prjprt() Routine to print the prjprm struct.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">*</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">* - prjset(), prjx2s(), prjs2x(): Generic driver routines</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">*</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">* - azpset(), azpx2s(), azps2x(): AZP (zenithal/azimuthal perspective)</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">* - szpset(), szpx2s(), szps2x(): SZP (slant zenithal perspective)</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment">* - tanset(), tanx2s(), tans2x(): TAN (gnomonic)</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">* - stgset(), stgx2s(), stgs2x(): STG (stereographic)</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment">* - sinset(), sinx2s(), sins2x(): SIN (orthographic/synthesis)</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">* - arcset(), arcx2s(), arcs2x(): ARC (zenithal/azimuthal equidistant)</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">* - zpnset(), zpnx2s(), zpns2x(): ZPN (zenithal/azimuthal polynomial)</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">* - zeaset(), zeax2s(), zeas2x(): ZEA (zenithal/azimuthal equal area)</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">* - airset(), airx2s(), airs2x(): AIR (Airy)</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">* - cypset(), cypx2s(), cyps2x(): CYP (cylindrical perspective)</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">* - ceaset(), ceax2s(), ceas2x(): CEA (cylindrical equal area)</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">* - carset(), carx2s(), cars2x(): CAR (Plate carree)</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment">* - merset(), merx2s(), mers2x(): MER (Mercator)</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment">* - sflset(), sflx2s(), sfls2x(): SFL (Sanson-Flamsteed)</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">* - parset(), parx2s(), pars2x(): PAR (parabolic)</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">* - molset(), molx2s(), mols2x(): MOL (Mollweide)</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">* - aitset(), aitx2s(), aits2x(): AIT (Hammer-Aitoff)</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">* - copset(), copx2s(), cops2x(): COP (conic perspective)</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment">* - coeset(), coex2s(), coes2x(): COE (conic equal area)</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">* - codset(), codx2s(), cods2x(): COD (conic equidistant)</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">* - cooset(), coox2s(), coos2x(): COO (conic orthomorphic)</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">* - bonset(), bonx2s(), bons2x(): BON (Bonne)</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">* - pcoset(), pcox2s(), pcos2x(): PCO (polyconic)</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">* - tscset(), tscx2s(), tscs2x(): TSC (tangential spherical cube)</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">* - cscset(), cscx2s(), cscs2x(): CSC (COBE spherical cube)</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">* - qscset(), qscx2s(), qscs2x(): QSC (quadrilateralized spherical cube)</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">* - hpxset(), hpxx2s(), hpxs2x(): HPX (HEALPix)</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment">* - xphset(), xphx2s(), xphs2x(): XPH (HEALPix polar, aka "butterfly")</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">*</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment">* Argument checking (projection routines):</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment">* ----------------------------------------</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment">* The values of phi and theta (the native longitude and latitude) normally lie</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment">* in the range [-180,180] for phi, and [-90,90] for theta. However, all</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment">* projection routines will accept any value of phi and will not normalize it.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment">*</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment">* The projection routines do not explicitly check that theta lies within the</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">* range [-90,90]. They do check for any value of theta that produces an</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">* invalid argument to the projection equations (e.g. leading to division by</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment">* zero). The projection routines for AZP, SZP, TAN, SIN, ZPN, and COP also</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment">* return error 2 if (phi,theta) corresponds to the overlapped (far) side of</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment">* the projection but also return the corresponding value of (x,y). This</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">* strict bounds checking may be relaxed at any time by setting prjprm::bounds</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment">* to 0 (rather than 1); the projections need not be reinitialized.</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment">*</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment">* Argument checking (deprojection routines):</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment">* ------------------------------------------</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment">* Error checking on the projected coordinates (x,y) is limited to that</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment">* required to ascertain whether a solution exists. Where a solution does</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment">* exist no check is made that the value of phi and theta obtained lie within</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment">* the ranges [-180,180] for phi, and [-90,90] for theta.</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">*</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment">* Accuracy:</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">* ---------</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment">* No warranty is given for the accuracy of these routines (refer to the</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment">* copyright notice); intending users must satisfy for themselves their</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">* adequacy for the intended purpose. However, closure to a precision of at</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment">* least 1E-10 degree of longitude and latitude has been verified for typical</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment">* projection parameters on the 1 degree graticule of native longitude and</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment">* latitude (to within 5 degrees of any latitude where the projection may</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">* diverge). Refer to the tprj1.c and tprj2.c test routines that accompany</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment">* this software.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment">*</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment">*</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment">* prjini() - Default constructor for the prjprm struct</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment">* ----------------------------------------------------</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment">* prjini() sets all members of a prjprm struct to default values. It should</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment">* be used to initialize every prjprm struct.</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment">*</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">* Returned:</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment">*</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment">*</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">*</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment">* prjfree() - Destructor for the prjprm struct</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment">* --------------------------------------------</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment">* prjfree() frees any memory that may have been allocated to store an error</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">* message in the prjprm struct.</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment">*</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment">* Given:</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment">*</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment">*</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment">*</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment">* prjprt() - Print routine for the prjprm struct</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment">* ----------------------------------------------</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment">* prjprt() prints the contents of a prjprm struct using wcsprintf(). Mainly</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment">* intended for diagnostic purposes.</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment">*</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment">* Given:</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment">* prj const struct prjprm*</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment">*</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment">*</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment">*</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment">* prjset() - Generic setup routine for the prjprm struct</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment">* ------------------------------------------------------</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment">* prjset() sets up a prjprm struct according to information supplied within</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment">* it.</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment">*</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment">* Note that this routine need not be called directly; it will be invoked by</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment">* prjx2s() and prjs2x() if prj.flag is anything other than a predefined magic</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment">* value.</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment">*</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment">* The one important distinction between prjset() and the setup routines for</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment">* the specific projections is that the projection code must be defined in the</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment">* prjprm struct in order for prjset() to identify the required projection.</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment">* Once prjset() has initialized the prjprm struct, prjx2s() and prjs2x() use</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment">* the pointers to the specific projection and deprojection routines contained</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment">* therein.</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment">*</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment">* Given and returned:</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment">*</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment">* 2: Invalid projection parameters.</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment">*</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment">* For returns > 1, a detailed error message is set in</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment">* prjprm::err if enabled, see wcserr_enable().</span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment">*</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="comment">*</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment">* prjx2s() - Generic Cartesian-to-spherical deprojection</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment">* ------------------------------------------------------</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">* Deproject Cartesian (x,y) coordinates in the plane of projection to native</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">* spherical coordinates (phi,theta).</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment">*</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment">* The projection is that specified by prjprm::code.</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment">*</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="comment">* Given and returned:</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment">*</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment">* Given:</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment">* nx,ny int Vector lengths.</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="comment">*</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="comment">* sxy,spt int Vector strides.</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="comment">*</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="comment">* x,y const double[]</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment">* Projected coordinates.</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment">*</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment">* Returned:</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment">* phi,theta double[] Longitude and latitude (phi,theta) of the projected</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment">* point in native spherical coordinates [deg].</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment">*</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment">* stat int[] Status return value for each vector element:</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment">* 1: Invalid value of (x,y).</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment">*</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="comment">* 2: Invalid projection parameters.</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="comment">* 3: One or more of the (x,y) coordinates were</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment">* invalid, as indicated by the stat vector.</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment">*</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment">* For returns > 1, a detailed error message is set in</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment">* prjprm::err if enabled, see wcserr_enable().</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment">*</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="comment">*</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="comment">* prjs2x() - Generic spherical-to-Cartesian projection</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="comment">* ----------------------------------------------------</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> <span class="comment">* Project native spherical coordinates (phi,theta) to Cartesian (x,y)</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="comment">* coordinates in the plane of projection.</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="comment">*</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment">* The projection is that specified by prjprm::code.</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment">*</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment">* Given and returned:</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment">*</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment">* Given:</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment">* nphi,</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment">* ntheta int Vector lengths.</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment">*</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment">* spt,sxy int Vector strides.</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment">*</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment">* phi,theta const double[]</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment">* Longitude and latitude (phi,theta) of the projected</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment">* point in native spherical coordinates [deg].</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment">*</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="comment">* Returned:</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment">* x,y double[] Projected coordinates.</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="comment">*</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment">* stat int[] Status return value for each vector element:</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment">* 1: Invalid value of (phi,theta).</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment">*</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment">* 2: Invalid projection parameters.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment">* 4: One or more of the (phi,theta) coordinates</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment">* were, invalid, as indicated by the stat vector.</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment">*</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment">* For returns > 1, a detailed error message is set in</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment">* prjprm::err if enabled, see wcserr_enable().</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment">*</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment">*</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment">* ???set() - Specific setup routines for the prjprm struct</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment">* --------------------------------------------------------</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="comment">* Set up a prjprm struct for a particular projection according to information</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="comment">* supplied within it.</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="comment">*</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="comment">* Given and returned:</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="comment">*</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment">* 2: Invalid projection parameters.</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="comment">*</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="comment">* For returns > 1, a detailed error message is set in</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="comment">* prjprm::err if enabled, see wcserr_enable().</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="comment">*</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="comment">*</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="comment">* ???x2s() - Specific Cartesian-to-spherical deprojection routines</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="comment">* ----------------------------------------------------------------</span></div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="comment">* Transform (x,y) coordinates in the plane of projection to native spherical</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="comment">* coordinates (phi,theta).</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment">*</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="comment">* Given and returned:</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="comment">*</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="comment">* Given:</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="comment">* nx,ny int Vector lengths.</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="comment">*</span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="comment">* sxy,spt int Vector strides.</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="comment">*</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="comment">* x,y const double[]</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="comment">* Projected coordinates.</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="comment">*</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="comment">* Returned:</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="comment">* phi,theta double[] Longitude and latitude of the projected point in</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="comment">* native spherical coordinates [deg].</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="comment">*</span></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> <span class="comment">* stat int[] Status return value for each vector element:</span></div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment">* 1: Invalid value of (x,y).</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment">*</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment">* 2: Invalid projection parameters.</span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment">* 3: One or more of the (x,y) coordinates were</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="comment">* invalid, as indicated by the stat vector.</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="comment">*</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="comment">* For returns > 1, a detailed error message is set in</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment">* prjprm::err if enabled, see wcserr_enable().</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="comment">*</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="comment">*</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="comment">* ???s2x() - Specific spherical-to-Cartesian projection routines</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="comment">*---------------------------------------------------------------</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="comment">* Transform native spherical coordinates (phi,theta) to (x,y) coordinates in</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="comment">* the plane of projection.</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="comment">*</span></div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="comment">* Given and returned:</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="comment">* prj struct prjprm*</span></div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="comment">* Projection parameters.</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="comment">*</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment">* Given:</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment">* nphi,</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment">* ntheta int Vector lengths.</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment">*</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment">* spt,sxy int Vector strides.</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="comment">*</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> <span class="comment">* phi,theta const double[]</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="comment">* Longitude and latitude of the projected point in</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="comment">* native spherical coordinates [deg].</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> <span class="comment">*</span></div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="comment">* Returned:</span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="comment">* x,y double[] Projected coordinates.</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="comment">*</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="comment">* stat int[] Status return value for each vector element:</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="comment">* 1: Invalid value of (phi,theta).</span></div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="comment">*</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="comment">* Function return value:</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="comment">* int Status return value:</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="comment">* 0: Success.</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="comment">* 1: Null prjprm pointer passed.</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span> <span class="comment">* 2: Invalid projection parameters.</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> <span class="comment">* 4: One or more of the (phi,theta) coordinates</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> <span class="comment">* were, invalid, as indicated by the stat vector.</span></div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="comment">*</span></div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="comment">* For returns > 1, a detailed error message is set in</span></div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="comment">* prjprm::err if enabled, see wcserr_enable().</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="comment">*</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="comment">*</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> <span class="comment">* prjprm struct - Projection parameters</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="comment">* -------------------------------------</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> <span class="comment">* The prjprm struct contains all information needed to project or deproject</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="comment">* native spherical coordinates. It consists of certain members that must be</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="comment">* set by the user ("given") and others that are set by the WCSLIB routines</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="comment">* ("returned"). Some of the latter are supplied for informational purposes</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="comment">* while others are for internal use only.</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="comment">*</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="comment">* int flag</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="comment">* (Given and returned) This flag must be set to zero whenever any of the</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="comment">* following prjprm struct members are set or changed:</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="comment">*</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="comment">* - prjprm::code,</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="comment">* - prjprm::r0,</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="comment">* - prjprm::pv[],</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="comment">* - prjprm::phi0,</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="comment">* - prjprm::theta0.</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="comment">*</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="comment">* This signals the initialization routine (prjset() or ???set()) to</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="comment">* recompute the returned members of the prjprm struct. flag will then be</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="comment">* reset to indicate that this has been done.</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="comment">*</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="comment">* Note that flag need not be reset when prjprm::bounds is changed.</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="comment">*</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="comment">* char code[4]</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> <span class="comment">* (Given) Three-letter projection code defined by the FITS standard.</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="comment">*</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="comment">* double r0</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="comment">* (Given) The radius of the generating sphere for the projection, a linear</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="comment">* scaling parameter. If this is zero, it will be reset to its default</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="comment">* value of 180/pi (the value for FITS WCS).</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="comment">*</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="comment">* double pv[30]</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="comment">* (Given) Projection parameters. These correspond to the PVi_ma keywords</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="comment">* in FITS, so pv[0] is PVi_0a, pv[1] is PVi_1a, etc., where i denotes the</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="comment">* latitude-like axis. Many projections use pv[1] (PVi_1a), some also use</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="comment">* pv[2] (PVi_2a) and SZP uses pv[3] (PVi_3a). ZPN is currently the only</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="comment">* projection that uses any of the others.</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="comment">*</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="comment">* Usage of the pv[] array as it applies to each projection is described in</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="comment">* the prologue to each trio of projection routines in prj.c.</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="comment">*</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="comment">* double phi0</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="comment">* (Given) The native longitude, phi_0 [deg], and ...</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="comment">* double theta0</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="comment">* (Given) ... the native latitude, theta_0 [deg], of the reference point,</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="comment">* i.e. the point (x,y) = (0,0). If undefined (set to a magic value by</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="comment">* prjini()) the initialization routine will set this to a</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="comment">* projection-specific default.</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="comment">*</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="comment">* int bounds</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="comment">* (Given) Controls strict bounds checking for the AZP, SZP, TAN, SIN, ZPN,</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="comment">* and COP projections; set to zero to disable checking.</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="comment">*</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="comment">* The remaining members of the prjprm struct are maintained by the setup</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="comment">* routines and must not be modified elsewhere:</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="comment">*</span></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="comment">* char name[40]</span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="comment">* (Returned) Long name of the projection.</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> <span class="comment">*</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="comment">*</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="comment">* int category</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span> <span class="comment">* (Returned) Projection category matching the value of the relevant global</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span> <span class="comment">* variable:</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> <span class="comment">*</span></div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <span class="comment">* - ZENITHAL,</span></div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="comment">* - CYLINDRICAL,</span></div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> <span class="comment">* - PSEUDOCYLINDRICAL,</span></div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span> <span class="comment">* - CONVENTIONAL,</span></div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="comment">* - CONIC,</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> <span class="comment">* - POLYCONIC,</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="comment">* - QUADCUBE, and</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="comment">* - HEALPIX.</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="comment">*</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> <span class="comment">* The category name may be identified via the prj_categories character</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> <span class="comment">* array, e.g.</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <span class="comment">*</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="comment">= struct prjprm prj;</span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> <span class="comment">= ...</span></div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="comment">= printf("%s\n", prj_categories[prj.category]);</span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <span class="comment">*</span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span> <span class="comment">*</span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="comment">* int pvrange</span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <span class="comment">* (Returned) Range of projection parameter indices: 100 times the first</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="comment">* allowed index plus the number of parameters, e.g. TAN is 0 (no</span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span> <span class="comment">* parameters), SZP is 103 (1 to 3), and ZPN is 30 (0 to 29).</span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> <span class="comment">*</span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span> <span class="comment">*</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> <span class="comment">* int simplezen</span></div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span> <span class="comment">* (Returned) True if the projection is a radially-symmetric zenithal</span></div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="comment">* projection.</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="comment">*</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> <span class="comment">*</span></div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> <span class="comment">* int equiareal</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="comment">* (Returned) True if the projection is equal area.</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> <span class="comment">*</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> <span class="comment">*</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <span class="comment">* int conformal</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="comment">* (Returned) True if the projection is conformal.</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> <span class="comment">*</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> <span class="comment">*</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="comment">* int global</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="comment">* (Returned) True if the projection can represent the whole sphere in a</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="comment">* finite, non-overlapped mapping.</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="comment">*</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> <span class="comment">*</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="comment">* int divergent</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="comment">* (Returned) True if the projection diverges in latitude.</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="comment">*</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> <span class="comment">* Provided for information only, not used by the projection routines.</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="comment">*</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> <span class="comment">* double x0</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> <span class="comment">* (Returned) The offset in x, and ...</span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span> <span class="comment">* double y0</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="comment">* (Returned) ... the offset in y used to force (x,y) = (0,0) at</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> <span class="comment">* (phi_0,theta_0).</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="comment">*</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> <span class="comment">* struct wcserr *err</span></div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="comment">* (Returned) If enabled, when an error status is returned this struct</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="comment">* contains detailed information about the error, see wcserr_enable().</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="comment">*</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> <span class="comment">* void *padding</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span> <span class="comment">* (An unused variable inserted for alignment purposes only.)</span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> <span class="comment">*</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> <span class="comment">* double w[10]</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> <span class="comment">* (Returned) Intermediate floating-point values derived from the</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="comment">* projection parameters, cached here to save recomputation.</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span> <span class="comment">*</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="comment">* Usage of the w[] array as it applies to each projection is described in</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span> <span class="comment">* the prologue to each trio of projection routines in prj.c.</span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span> <span class="comment">*</span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span> <span class="comment">* int n</span></div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span> <span class="comment">* (Returned) Intermediate integer value (used only for the ZPN and HPX</span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span> <span class="comment">* projections).</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="comment">*</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span> <span class="comment">* int (*prjx2s)(PRJX2S_ARGS)</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> <span class="comment">* (Returned) Pointer to the projection ...</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> <span class="comment">* int (*prjs2x)(PRJ_ARGS)</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> <span class="comment">* (Returned) ... and deprojection routines.</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> <span class="comment">*</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> <span class="comment">*</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> <span class="comment">* Global variable: const char *prj_errmsg[] - Status return messages</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="comment">* ------------------------------------------------------------------</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> <span class="comment">* Error messages to match the status value returned from each function.</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span> <span class="comment">*</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span> <span class="comment">*===========================================================================*/</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> </div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span> <span class="preprocessor">#ifndef WCSLIB_PROJ</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> <span class="preprocessor"></span><span class="preprocessor">#define WCSLIB_PROJ</span></div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span> <span class="preprocessor">#include "<a class="code" href="wcserr_8h.html">wcserr.h</a>"</span></div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> </div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span> <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span> </div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span> <span class="comment">/* Total number of projection parameters; 0 to PVN-1. */</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"><a class="code" href="prj_8h.html#ac8dfb42cf72db0c4bc690d030f75c662"> 549</a></span> <span class="preprocessor">#define PVN 30</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="prj_8h.html#acb157519ef498bf669298c5508492f3e" title="Status return messages. ">prj_errmsg</a>[];</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> </div>
<div class="line"><a name="l00553"></a><span class="lineno"><a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305"> 553</a></span> <span class="keyword">enum</span> <a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305">prj_errmsg_enum</a> {</div>
<div class="line"><a name="l00554"></a><span class="lineno"><a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a6f3a73d3c0a7dc7d15ceb00e00714bea"> 554</a></span>  <a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a6f3a73d3c0a7dc7d15ceb00e00714bea">PRJERR_SUCCESS</a> = 0, <span class="comment">/* Success. */</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"><a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a60d6a804ddfa2f2d0f25f397d653695b"> 555</a></span>  <a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a60d6a804ddfa2f2d0f25f397d653695b">PRJERR_NULL_POINTER</a> = 1, <span class="comment">/* Null prjprm pointer passed. */</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"><a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a6a0f63e2f52f594637a12db14e5814e6"> 556</a></span>  <a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a6a0f63e2f52f594637a12db14e5814e6">PRJERR_BAD_PARAM</a> = 2, <span class="comment">/* Invalid projection parameters. */</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"><a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305ad33460ba0b865ff7580e6d2cebd92c74"> 557</a></span>  <a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305ad33460ba0b865ff7580e6d2cebd92c74">PRJERR_BAD_PIX</a> = 3, <span class="comment">/* One or more of the (x, y) coordinates were</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="comment"> invalid. */</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"><a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a0d15cd17822bea2f7fc0209a180cc998"> 559</a></span>  <a class="code" href="prj_8h.html#a2ac22403e59a9e8d2b2f53f6d0574305a0d15cd17822bea2f7fc0209a180cc998">PRJERR_BAD_WORLD</a> = 4 <span class="comment">/* One or more of the (phi, theta) coordinates</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span> <span class="comment"> were invalid. */</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span> };</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> </div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span> <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#adc97181f64d72234b8c6903b22b33df9" title="Identifier for conic projections. ">CONIC</a>, <a class="code" href="prj_8h.html#ac940da0fb0552876fb40a92f82c9625f" title="Identifier for conventional projections. ">CONVENTIONAL</a>, <a class="code" href="prj_8h.html#a86e25219d2169702c7db6508750097cf" title="Identifier for cylindrical projections. ">CYLINDRICAL</a>, <a class="code" href="prj_8h.html#aafd25a96ccc5966c04d7732ca482c0c1" title="Identifier for polyconic projections. ">POLYCONIC</a>,</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="prj_8h.html#a5a2f80bed69a84464e5654f91ed4fb63" title="Identifier for pseudocylindrical projections. ">PSEUDOCYLINDRICAL</a>, <a class="code" href="prj_8h.html#a749605599f1bf2b883c5c88b6cc9c06b" title="Identifier for quadcube projections. ">QUADCUBE</a>, <a class="code" href="prj_8h.html#a4b25d630b7590f31fa0aa6d5861c9bfd" title="Identifier for zenithal/azimuthal projections. ">ZENITHAL</a>, <a class="code" href="prj_8h.html#a6e2db45f219ba5732ddca43a9fc17408" title="Identifier for the HEALPix projection. ">HEALPIX</a>;</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span> <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> <a class="code" href="prj_8h.html#a9bceed17f625eb88a0826871dc8296b5" title="Projection categories. ">prj_categories</a>[9][32];</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span> </div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span> <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a2d30db5685dd1faa18680a0e69bc5854" title="The number of recognized three-letter projection codes. ">prj_ncode</a>;</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> <a class="code" href="prj_8h.html#a5c0dfa6c6a33e8a936386c05d74e7202" title="Recognized three-letter projection codes. ">prj_codes</a>[28][4];</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> </div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> <span class="preprocessor">#ifdef PRJX2S_ARGS</span></div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span> <span class="preprocessor"></span><span class="preprocessor">#undef PRJX2S_ARGS</span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span> <span class="preprocessor">#ifdef PRJS2X_ARGS</span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> <span class="preprocessor"></span><span class="preprocessor">#undef PRJS2X_ARGS</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span> <span class="comment">/* For use in declaring deprojection function prototypes. */</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"><a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0"> 579</a></span> <span class="preprocessor">#define PRJX2S_ARGS struct prjprm *prj, int nx, int ny, int sxy, int spt, \</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> <span class="preprocessor">const double x[], const double y[], double phi[], double theta[], int stat[]</span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> <span class="comment">/* For use in declaring projection function prototypes. */</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"><a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a"> 583</a></span> <span class="preprocessor">#define PRJS2X_ARGS struct prjprm *prj, int nx, int ny, int sxy, int spt, \</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> <span class="preprocessor">const double phi[], const double theta[], double x[], double y[], int stat[]</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> </div>
<div class="line"><a name="l00587"></a><span class="lineno"><a class="code" href="structprjprm.html"> 587</a></span> <span class="keyword">struct </span><a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> {</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="comment">/* Initialization flag (see the prologue above). */</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"><a class="code" href="structprjprm.html#ad304d66b3f3aa64fe9c7251d3c420d02"> 590</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#ad304d66b3f3aa64fe9c7251d3c420d02">flag</a>; <span class="comment">/* Set to zero to force initialization. */</span></div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> </div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="comment">/* Parameters to be provided (see the prologue above). */</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00594"></a><span class="lineno"><a class="code" href="structprjprm.html#a4f3c364f16d0b6498d7e11e6bb67239c"> 594</a></span>  <span class="keywordtype">char</span> <a class="code" href="structprjprm.html#a4f3c364f16d0b6498d7e11e6bb67239c">code</a>[4]; <span class="comment">/* Three-letter projection code. */</span></div>
<div class="line"><a name="l00595"></a><span class="lineno"><a class="code" href="structprjprm.html#a3894c2e551929b29adce50cd637fa351"> 595</a></span>  <span class="keywordtype">double</span> <a class="code" href="structprjprm.html#a3894c2e551929b29adce50cd637fa351">r0</a>; <span class="comment">/* Radius of the generating sphere. */</span></div>
<div class="line"><a name="l00596"></a><span class="lineno"><a class="code" href="structprjprm.html#a46d6928a9026e7b3376dcf0d3f91db64"> 596</a></span>  <span class="keywordtype">double</span> <a class="code" href="structprjprm.html#a46d6928a9026e7b3376dcf0d3f91db64">pv</a>[<a class="code" href="prj_8h.html#ac8dfb42cf72db0c4bc690d030f75c662" title="Total number of projection parameters. ">PVN</a>]; <span class="comment">/* Projection parameters. */</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"><a class="code" href="structprjprm.html#ae91fa3ff034b1c6de3ec98d8fb9e0ab1"> 597</a></span>  <span class="keywordtype">double</span> <a class="code" href="structprjprm.html#a699ad609ff7c1935d8fb6a457a5b8164">phi0</a>, <a class="code" href="structprjprm.html#ae91fa3ff034b1c6de3ec98d8fb9e0ab1">theta0</a>; <span class="comment">/* Fiducial native coordinates. */</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"><a class="code" href="structprjprm.html#ab8dd3d8b1e462a2b261fc9e304885943"> 598</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#ab8dd3d8b1e462a2b261fc9e304885943">bounds</a>; <span class="comment">/* Enable strict bounds checking. */</span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span> </div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="comment">/* Information derived from the parameters supplied. */</span></div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00602"></a><span class="lineno"><a class="code" href="structprjprm.html#ab165b11d417700de0a4187f133050a2b"> 602</a></span>  <span class="keywordtype">char</span> <a class="code" href="structprjprm.html#ab165b11d417700de0a4187f133050a2b">name</a>[40]; <span class="comment">/* Projection name. */</span></div>
<div class="line"><a name="l00603"></a><span class="lineno"><a class="code" href="structprjprm.html#af0fcebbc8155f0b1ee868e64a2ed9ac3"> 603</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#af0fcebbc8155f0b1ee868e64a2ed9ac3">category</a>; <span class="comment">/* Projection category. */</span></div>
<div class="line"><a name="l00604"></a><span class="lineno"><a class="code" href="structprjprm.html#abcd2a3ee9f61b930d23bf741cea63bf3"> 604</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#abcd2a3ee9f61b930d23bf741cea63bf3">pvrange</a>; <span class="comment">/* Range of projection parameter indices. */</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"><a class="code" href="structprjprm.html#afecdd175932cbf29fcfac575b1a5cb9b"> 605</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#afecdd175932cbf29fcfac575b1a5cb9b">simplezen</a>; <span class="comment">/* Is it a simple zenithal projection? */</span></div>
<div class="line"><a name="l00606"></a><span class="lineno"><a class="code" href="structprjprm.html#ab3e207e26d1c9db06cedba2cf4460340"> 606</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#ab3e207e26d1c9db06cedba2cf4460340">equiareal</a>; <span class="comment">/* Is it an equal area projection? */</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"><a class="code" href="structprjprm.html#ad7a41e3d03cb739c2a9aa1f8aabf54f9"> 607</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#ad7a41e3d03cb739c2a9aa1f8aabf54f9">conformal</a>; <span class="comment">/* Is it a conformal projection? */</span></div>
<div class="line"><a name="l00608"></a><span class="lineno"><a class="code" href="structprjprm.html#ae634b0747fe55f77e65b6909c94227d9"> 608</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#ae634b0747fe55f77e65b6909c94227d9">global</a>; <span class="comment">/* Can it map the whole sphere? */</span></div>
<div class="line"><a name="l00609"></a><span class="lineno"><a class="code" href="structprjprm.html#a62e88bd3c9e02f38193a800035b83918"> 609</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#a62e88bd3c9e02f38193a800035b83918">divergent</a>; <span class="comment">/* Does the projection diverge in latitude? */</span></div>
<div class="line"><a name="l00610"></a><span class="lineno"><a class="code" href="structprjprm.html#a164706f09314c493c7e9d2c7325f8372"> 610</a></span>  <span class="keywordtype">double</span> <a class="code" href="structprjprm.html#aae2c61d85c72e87f4b2b77a14c8eb316">x0</a>, <a class="code" href="structprjprm.html#a164706f09314c493c7e9d2c7325f8372">y0</a>; <span class="comment">/* Fiducial offsets. */</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span> </div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="comment">/* Error handling */</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"><a class="code" href="structprjprm.html#a30e78bb110dc7a8ad0303370ce20762c"> 614</a></span>  <span class="keyword">struct </span><a class="code" href="structwcserr.html" title="Error message handling. ">wcserr</a> *<a class="code" href="structprjprm.html#a30e78bb110dc7a8ad0303370ce20762c">err</a>;</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span> </div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="comment">/* Private */</span></div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00618"></a><span class="lineno"><a class="code" href="structprjprm.html#a75cda8ae364a914f64e119ba859c8372"> 618</a></span>  <span class="keywordtype">void</span> *<a class="code" href="structprjprm.html#a75cda8ae364a914f64e119ba859c8372">padding</a>; <span class="comment">/* (Dummy inserted for alignment purposes.) */</span></div>
<div class="line"><a name="l00619"></a><span class="lineno"><a class="code" href="structprjprm.html#a3b40a2df3b436c4ffcf5be6814993278"> 619</a></span>  <span class="keywordtype">double</span> <a class="code" href="structprjprm.html#a3b40a2df3b436c4ffcf5be6814993278">w</a>[10]; <span class="comment">/* Intermediate values. */</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"><a class="code" href="structprjprm.html#aab36c6218a33025ac4c5025de7c67d42"> 620</a></span>  <span class="keywordtype">int</span> <a class="code" href="structprjprm.html#afb805c40a4d37c195074c1305874d615">m</a>, <a class="code" href="structprjprm.html#aab36c6218a33025ac4c5025de7c67d42">n</a>; <span class="comment">/* Intermediate values. */</span></div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span> </div>
<div class="line"><a name="l00622"></a><span class="lineno"><a class="code" href="structprjprm.html#aeef644ffeafea16e82b2b995a470a345"> 622</a></span>  int (*<a class="code" href="structprjprm.html#aeef644ffeafea16e82b2b995a470a345">prjx2s</a>)(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>); <span class="comment">/* Pointers to the spherical projection and */</span></div>
<div class="line"><a name="l00623"></a><span class="lineno"><a class="code" href="structprjprm.html#ae699a5fb02198777343057972e1452d0"> 623</a></span>  int (*<a class="code" href="structprjprm.html#ae699a5fb02198777343057972e1452d0">prjs2x</a>)(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>); <span class="comment">/* deprojection functions. */</span></div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span> };</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span> </div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span> <span class="comment">/* Size of the prjprm struct in int units, used by the Fortran wrappers. */</span></div>
<div class="line"><a name="l00627"></a><span class="lineno"><a class="code" href="prj_8h.html#a2cdabd9dfe78fe18b9e6597881d8ed92"> 627</a></span> <span class="preprocessor">#define PRJLEN (sizeof(struct prjprm)/sizeof(int))</span></div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span> </div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span> <span class="comment">/* Use the preprocessor to help declare function prototypes (see above). */</span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ad994cb23871c51b20754973bef180f8a" title="Default constructor for the prjprm struct. ">prjini</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a50db1538981df162709b81be0b2961ab" title="Destructor for the prjprm struct. ">prjfree</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a8785bdf33bdaa3d9d52fd51b621ec8d5" title="Print routine for the prjprm struct. ">prjprt</a>(<span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span> </div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ad43dbc765c63162d0af2b9285b8a434f" title="Generic setup routine for the prjprm struct. ">prjset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a9a387f05414e7b59487fdcb03ff79ced" title="Generic Cartesian-to-spherical deprojection. ">prjx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#abe28216295d9e7ad7dbb01bf5985df9f" title="Generic spherical-to-Cartesian projection. ">prjs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span> </div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#abf6696d3455c684cb44d06da7885ce94" title="Set up a prjprm struct for the zenithal/azimuthal perspective (AZP) projection. ">azpset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a8ebb4c79b635cef463b4e7242ff23c25" title="Cartesian-to-spherical transformation for the zenithal/azimuthal perspective (AZP) projection...">azpx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#abc26dfb2d0b0bee71f6e4541977d237f" title="Spherical-to-Cartesian transformation for the zenithal/azimuthal perspective (AZP) projection...">azps2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span> </div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afaafab5c440384667d7af444b7aca750" title="Set up a prjprm struct for the slant zenithal perspective (SZP) projection. ">szpset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a2fe67a5ecf17729881efa24c83482611" title="Cartesian-to-spherical transformation for the slant zenithal perspective (SZP) projection. ">szpx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a70b750ec65eb4a277057200c7fbb251f" title="Spherical-to-Cartesian transformation for the slant zenithal perspective (SZP) projection. ">szps2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span> </div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a34d303d7ae44a6aca43c1a81bfaac10f" title="Set up a prjprm struct for the gnomonic (TAN) projection. ">tanset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#acd4f54c072b6219242daeb6d4b9a74cb" title="Cartesian-to-spherical transformation for the gnomonic (TAN) projection. ">tanx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a9d3358bed907342e3309e54bd2ab89da" title="Spherical-to-Cartesian transformation for the gnomonic (TAN) projection. ">tans2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span> </div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a66b51f10624b6c17a84b5b54058dd72b" title="Set up a prjprm struct for the stereographic (STG) projection. ">stgset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a88c15d0b6f789cbbd7c5d323ef131360" title="Cartesian-to-spherical transformation for the stereographic (STG) projection. ">stgx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ab46a0a668f28939626287d048153863f" title="Spherical-to-Cartesian transformation for the stereographic (STG) projection. ">stgs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span> </div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ab6ce2bb75a87b1679d05f251227d2f1b" title="Set up a prjprm struct for the orthographic/synthesis (SIN) projection. ">sinset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aeb7881cd5d7b4b5e26281a512b8f62ac" title="Cartesian-to-spherical transformation for the orthographic/synthesis (SIN) projection. ">sinx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#abdf8c6c3ef615a01ebf8822e013d6a63" title="Spherical-to-Cartesian transformation for the orthographic/synthesis (SIN) projection. ">sins2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span> </div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ac038f2474d5d58de157554cee74a9735" title="Set up a prjprm struct for the zenithal/azimuthal equidistant (ARC) projection. ">arcset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a666322bfe8c4b8e73f00afeb47283f97" title="Cartesian-to-spherical transformation for the zenithal/azimuthal equidistant (ARC) projection...">arcx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aaba5ce89ae711728d8ba8105ac5fd599" title="Spherical-to-Cartesian transformation for the zenithal/azimuthal equidistant (ARC) projection...">arcs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span> </div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ac983c5a393c5b3f1041f07b2eb95a3a5" title="Set up a prjprm struct for the zenithal/azimuthal polynomial (ZPN) projection. ">zpnset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a574e44daea81568a6d5e324a6f339d6f" title="Cartesian-to-spherical transformation for the zenithal/azimuthal polynomial (ZPN) projection...">zpnx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a7b60d7992bf9c671cb4191f0ec2e0c90" title="Spherical-to-Cartesian transformation for the zenithal/azimuthal polynomial (ZPN) projection...">zpns2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span> </div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a3229533df20718c0d5671cc9eb5316fe" title="Set up a prjprm struct for the zenithal/azimuthal equal area (ZEA) projection. ">zeaset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a849a1bbd679d0c193e8be96a8b9ed534" title="Cartesian-to-spherical transformation for the zenithal/azimuthal equal area (ZEA) projection...">zeax2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#adc4da028cde2d970e9e5e22adca22f37" title="Spherical-to-Cartesian transformation for the zenithal/azimuthal equal area (ZEA) projection...">zeas2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span> </div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a025adf8a63b5d4a8d2a4de804e0707be" title="Set up a prjprm struct for Airy's (AIR) projection. ">airset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a2c87fbf68277f03051d3eaae3db785e9" title="Cartesian-to-spherical transformation for Airy's (AIR) projection. ">airx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a75b6b1cb0a748e9b5d3a4cd31129ace6" title="Spherical-to-Cartesian transformation for Airy's (AIR) projection. ">airs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span> </div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a36cf447dee9f2e90e42d43d7adc5a0a1" title="Set up a prjprm struct for the cylindrical perspective (CYP) projection. ">cypset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#affdbf993ce959fce2c148c07cd0f2c0c" title="Cartesian-to-spherical transformation for the cylindrical perspective (CYP) projection. ">cypx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a13e0f81e1fd4bdc46847ab4c634ad346" title="Spherical-to-Cartesian transformation for the cylindrical perspective (CYP) projection. ">cyps2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span> </div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a68ce41ad199c3385bed7e7d4ded2bd8a" title="Set up a prjprm struct for the cylindrical equal area (CEA) projection. ">ceaset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aff09e87b2246bdec83f6a7bb1bc0f471" title="Cartesian-to-spherical transformation for the cylindrical equal area (CEA) projection. ">ceax2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a28ddb923a52cb597ca9c7dd03ceeb4fe" title="Spherical-to-Cartesian transformation for the cylindrical equal area (CEA) projection. ">ceas2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span> </div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a36ccae7b426311614a4e80432a2b62c3" title="Set up a prjprm struct for the plate carrée (CAR) projection. ">carset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#af363383621fb2b72243c1d6b894874d5" title="Cartesian-to-spherical transformation for the plate carrée (CAR) projection. ">carx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ab4325a957786611772b90e7a080327f3" title="Spherical-to-Cartesian transformation for the plate carrée (CAR) projection. ">cars2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span> </div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#acf989261fd56f1e8b4eb8941ec2c754f" title="Set up a prjprm struct for Mercator's (MER) projection. ">merset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a5380727f9aeff5aa57f8545d6b54a8f8" title="Cartesian-to-spherical transformation for Mercator's (MER) projection. ">merx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ad9a80b98c04b0e06d08fd84bacc58b27" title="Spherical-to-Cartesian transformation for Mercator's (MER) projection. ">mers2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span> </div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a7c719c0387d23c53b0ceb3ee161de66a" title="Set up a prjprm struct for the Sanson-Flamsteed (SFL) projection. ">sflset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a310444979f8f0e62db2bcbe39b0e3d35" title="Cartesian-to-spherical transformation for the Sanson-Flamsteed (SFL) projection. ">sflx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a5517fccc15882e298ac9433f44d1ae4c" title="Spherical-to-Cartesian transformation for the Sanson-Flamsteed (SFL) projection. ">sfls2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span> </div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ad2a2b56c0900516dd24eebf430bcb29c" title="Set up a prjprm struct for the parabolic (PAR) projection. ">parset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a17be11269d86b3308fd925949877718e" title="Cartesian-to-spherical transformation for the parabolic (PAR) projection. ">parx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aeb5951ec54b929d16ab464939a37d74f" title="Spherical-to-Cartesian transformation for the parabolic (PAR) projection. ">pars2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> </div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a151140d870ed4f490317938bd6260a6a" title="Set up a prjprm struct for Mollweide's (MOL) projection. ">molset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a853c1df5e8327d83e9cfdde9455355f5" title="Cartesian-to-spherical transformation for Mollweide's (MOL) projection. ">molx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a6f3cbaaf367984579aad5ec7eb00f397" title="Spherical-to-Cartesian transformation for Mollweide's (MOL) projection. ">mols2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a33f92621800eb880b75611c439526d19" title="Set up a prjprm struct for the Hammer-Aitoff (AIT) projection. ">aitset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a2da3bbd3c42c6ad324117cc5f249a834" title="Cartesian-to-spherical transformation for the Hammer-Aitoff (AIT) projection. ">aitx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a8cca776751549082521a72a743d6b937" title="Spherical-to-Cartesian transformation for the Hammer-Aitoff (AIT) projection. ">aits2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span> </div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ac2f3bc42ac6e7d458364ebcf2b35814f" title="Set up a prjprm struct for the conic perspective (COP) projection. ">copset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a588e9a86fc4dcd1195f867f718ce5429" title="Cartesian-to-spherical transformation for the conic perspective (COP) projection. ...">copx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a77283589634cc9a054f3a7c7fc91d38d" title="Spherical-to-Cartesian transformation for the conic perspective (COP) projection. ...">cops2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span> </div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ab1264f0201113c1a8e931ad9a7630e2f" title="Set up a prjprm struct for the conic equal area (COE) projection. ">coeset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ad70968320728202aa12048162248d368" title="Cartesian-to-spherical transformation for the conic equal area (COE) projection. ">coex2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afa8d27e481bbfffacd3e671e6715d5cb" title="Spherical-to-Cartesian transformation for the conic equal area (COE) projection. ">coes2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span> </div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afbf5f05496f1e018425e02d60a4e0b74" title="Set up a prjprm struct for the conic equidistant (COD) projection. ">codset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a105e2bf177120eb34f41e6af768f855d" title="Cartesian-to-spherical transformation for the conic equidistant (COD) projection. ...">codx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afedc43dc512008174ec9b87753519031" title="Spherical-to-Cartesian transformation for the conic equidistant (COD) projection. ...">cods2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span> </div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a344308a1d96a93f9bc682141f3df1a14" title="Set up a prjprm struct for the conic orthomorphic (COO) projection. ">cooset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a2f42dcec4ea56bbb25b563859228b02e" title="Cartesian-to-spherical transformation for the conic orthomorphic (COO) projection. ">coox2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aed0317c8ffef248346da897568df266c" title="Spherical-to-Cartesian transformation for the conic orthomorphic (COO) projection. ">coos2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span> </div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aaec02a8e47d68e126983e9bb07a0c0aa" title="Set up a prjprm struct for Bonne's (BON) projection. ">bonset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a53315ef8d3bd4002d1e98142fcf62566" title="Cartesian-to-spherical transformation for Bonne's (BON) projection. ">bonx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a3b4cda48838c613460bff00c76fceb44" title="Spherical-to-Cartesian transformation for Bonne's (BON) projection. ">bons2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span> </div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aabdc7abc8b7c80187770cfd12c63f700" title="Set up a prjprm struct for the polyconic (PCO) projection. ">pcoset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a28b623c88d38ab711fc61f36a97d0b27" title="Cartesian-to-spherical transformation for the polyconic (PCO) projection. ">pcox2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a1f1714691f99f11640dccdc74eadfb49" title="Spherical-to-Cartesian transformation for the polyconic (PCO) projection. ">pcos2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span> </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aad75dcd0cd2fd0b6a162b5587cba9c2d" title="Set up a prjprm struct for the tangential spherical cube (TSC) projection. ">tscset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#abbfbf3cba73850d7608765725993dfe3" title="Cartesian-to-spherical transformation for the tangential spherical cube (TSC) projection. ">tscx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a167a49d730bca43483aef311f7114ae4" title="Spherical-to-Cartesian transformation for the tangential spherical cube (TSC) projection. ">tscs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span> </div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a8bc552f12260f944e0b8f9b714804983" title="Set up a prjprm struct for the COBE spherical cube (CSC) projection. ">cscset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afcefcb885b7d1c33e0458345cdc9f4a4" title="Cartesian-to-spherical transformation for the COBE spherical cube (CSC) projection. ">cscx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#ac9a7ed6b032cfdaba0e8caba17c6c149" title="Spherical-to-Cartesian transformation for the COBE spherical cube (CSC) projection. ">cscs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span> </div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a6d1f0504f9b864d4aed4a59d60bab819" title="Set up a prjprm struct for the quadrilateralized spherical cube (QSC) projection. ...">qscset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afc5276e759c799deea36271d9cafc5e9" title="Cartesian-to-spherical transformation for the quadrilateralized spherical cube (QSC) projection...">qscx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a847b7c3f5b7361596912d3d876b4f4fe" title="Spherical-to-Cartesian transformation for the quadrilateralized spherical cube (QSC) projection...">qscs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span> </div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#aa2167e62576d36eae341c2583cb5d678" title="Set up a prjprm struct for the HEALPix (HPX) projection. ">hpxset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a4ff298fcdc6e7e23dfb4971fbd26ebe7" title="Cartesian-to-spherical transformation for the HEALPix (HPX) projection. ">hpxx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#af44375ad9036898dd6d12d2cc58bf53b" title="Spherical-to-Cartesian transformation for the HEALPix (HPX) projection. ">hpxs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span> </div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#afe3968d54673ee2d843005ad2f2276b5">xphset</a>(<span class="keyword">struct</span> <a class="code" href="structprjprm.html" title="Projection parameters. ">prjprm</a> *prj);</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a6a15da57b1ebff4daea8728b0d064f23">xphx2s</a>(<a class="code" href="prj_8h.html#a37ad31c5d2926862d211db0d14f401f0" title="For use in declaring deprojection function prototypes. ">PRJX2S_ARGS</a>);</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span> <span class="keywordtype">int</span> <a class="code" href="prj_8h.html#a6c92f19ce9244009f4ae9517bd4f68b4">xphs2x</a>(<a class="code" href="prj_8h.html#aacc46318c778bd844e30d6997394cc8a" title="For use in declaring projection function prototypes. ">PRJS2X_ARGS</a>);</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span> </div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span> </div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span> <span class="comment">/* Deprecated. */</span></div>
<div class="line"><a name="l00753"></a><span class="lineno"><a class="code" href="prj_8h.html#a7f080405538ea2ddd2882c991e25bd2f"> 753</a></span> <span class="preprocessor">#define prjini_errmsg prj_errmsg</span></div>
<div class="line"><a name="l00754"></a><span class="lineno"><a class="code" href="prj_8h.html#af862254dceec64a987fdaabc40e4963d"> 754</a></span> <span class="preprocessor"></span><span class="preprocessor">#define prjprt_errmsg prj_errmsg</span></div>
<div class="line"><a name="l00755"></a><span class="lineno"><a class="code" href="prj_8h.html#a94f59295c312536ce66482b3d9bebec4"> 755</a></span> <span class="preprocessor"></span><span class="preprocessor">#define prjset_errmsg prj_errmsg</span></div>
<div class="line"><a name="l00756"></a><span class="lineno"><a class="code" href="prj_8h.html#a3672afec3db0f850d67404814ebdbc64"> 756</a></span> <span class="preprocessor"></span><span class="preprocessor">#define prjx2s_errmsg prj_errmsg</span></div>
<div class="line"><a name="l00757"></a><span class="lineno"><a class="code" href="prj_8h.html#adf9cca0265038851129d1966017cd525"> 757</a></span> <span class="preprocessor"></span><span class="preprocessor">#define prjs2x_errmsg prj_errmsg</span></div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span> <span class="preprocessor">#endif </span><span class="comment">/* WCSLIB_PROJ */</span><span class="preprocessor"></span></div>
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