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<li class="navelem"><a class="el" href="dir_790b8b7e4d2f220241a4742893e73bf7.html">layout</a></li> </ul>
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<div class="title">LESwaps.h</div> </div>
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<a href="LESwaps_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"> * (C) Copyright IBM Corp. 1998-2011 - All Rights Reserved</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</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> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#ifndef __LESWAPS_H</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor"></span><span class="preprocessor">#define __LESWAPS_H</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "<a class="code" href="LETypes_8h.html" title="C API: Basic definitions for the ICU LayoutEngine.">LETypes.h</a>"</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <a class="code" href="uversion_8h.html#a7d9374e037299886d4192b763b4c5e8b" title="This is used to begin a declaration of a public ICU C++ API.">U_NAMESPACE_BEGIN</a></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="code" href="LESwaps_8h.html#ad8428b09ef55071a177a40090b02583d"> 25</a></span> <span class="preprocessor">#define SWAPW(value) LESwaps::swapWord((le_uint16)(value))</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="code" href="LESwaps_8h.html#ab399b3d20f67865ecd8b5db950ada400"> 33</a></span> <span class="preprocessor">#define SWAPL(value) LESwaps::swapLong((le_uint32)(value))</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="classLESwaps.html"> 44</a></span> <span class="keyword">class </span><a class="code" href="utypes_8h.html#a623f81640d6092d9141a1d4d24ccaffc" title="Set to export library symbols from inside the layout engine library, and to import them from outside...">U_LAYOUT_API</a> <a class="code" href="classLESwaps.html" title="This class is used to access data which stored in big endian order regardless of the conventions of t...">LESwaps</a> <span class="comment">/* not : public UObject because all methods are static */</span> {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="code" href="classLESwaps.html#a7f7f533cacc395454739694b4e6a6e9e"> 57</a></span>  <span class="keyword">static</span> <a class="code" href="LETypes_8h.html#a4d16715b42bdd9be2fa3b6ca600641ce" title="A type used for unsigned, 16-bit integers.">le_uint16</a> swapWord(<a class="code" href="LETypes_8h.html#a4d16715b42bdd9be2fa3b6ca600641ce" title="A type used for unsigned, 16-bit integers.">le_uint16</a> value)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#if (defined(U_IS_BIG_ENDIAN) && U_IS_BIG_ENDIAN) || \</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"> (defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)) || \</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor"> defined(__BIG_ENDIAN__)</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"></span> <span class="comment">// Fastpath when we know that the platform is big-endian.</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> value;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"></span> <span class="comment">// Reads a big-endian value on any platform.</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a9fbc3ea31db88ab0f10a595c864d385f" title="A type used for unsigned, 8-bit integers.">le_uint8</a> *p = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><a class="code" href="LETypes_8h.html#a9fbc3ea31db88ab0f10a595c864d385f" title="A type used for unsigned, 8-bit integers.">le_uint8</a> *<span class="keyword">></span>(&value);</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> (<a class="code" href="LETypes_8h.html#a4d16715b42bdd9be2fa3b6ca600641ce" title="A type used for unsigned, 16-bit integers.">le_uint16</a>)((p[0] << 8) | p[1]);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor"></span> };</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="code" href="classLESwaps.html#a9c171efa2037bcb97749271e93a956d0"> 81</a></span>  <span class="keyword">static</span> <a class="code" href="LETypes_8h.html#a8ed46f4fc717cf0a94de62efe109ecae" title="A type used for unsigned, 32-bit integers.">le_uint32</a> swapLong(<a class="code" href="LETypes_8h.html#a8ed46f4fc717cf0a94de62efe109ecae" title="A type used for unsigned, 32-bit integers.">le_uint32</a> value)</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#if (defined(U_IS_BIG_ENDIAN) && U_IS_BIG_ENDIAN) || \</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor"> (defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)) || \</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"> defined(__BIG_ENDIAN__)</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor"></span> <span class="comment">// Fastpath when we know that the platform is big-endian.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> value;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor"></span> <span class="comment">// Reads a big-endian value on any platform.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a9fbc3ea31db88ab0f10a595c864d385f" title="A type used for unsigned, 8-bit integers.">le_uint8</a> *p = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><a class="code" href="LETypes_8h.html#a9fbc3ea31db88ab0f10a595c864d385f" title="A type used for unsigned, 8-bit integers.">le_uint8</a> *<span class="keyword">></span>(&value);</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> (<a class="code" href="LETypes_8h.html#a8ed46f4fc717cf0a94de62efe109ecae" title="A type used for unsigned, 32-bit integers.">le_uint32</a>)((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor"></span> };</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="classLESwaps.html" title="This class is used to access data which stored in big endian order regardless of the conventions of t...">LESwaps</a>() {} <span class="comment">// private - forbid instantiation</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> };</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <a class="code" href="uversion_8h.html#a3da1f00f3b02976ac53c014a3e4c0933" title="This is used to end a declaration of a public ICU C++ API.">U_NAMESPACE_END</a></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#endif</span></div>
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