<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.5"/> <title>NVIDIA 2D Image And Signal Performance Primitives (NPP): Ln</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">NVIDIA 2D Image And Signal Performance Primitives (NPP)  <span id="projectnumber">Version 10.1.1</span> </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.5 --> <script type="text/javascript"> var searchBox = new SearchBox("searchBox", "search",false,'Search'); </script> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li> <div id="MSearchBox" class="MSearchBoxInactive"> <span class="left"> <img id="MSearchSelect" src="search/mag_sel.png" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" alt=""/> <input type="text" id="MSearchField" value="Search" accesskey="S" onfocus="searchBox.OnSearchFieldFocus(true)" onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> </span><span class="right"> <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> </span> </div> </li> </ul> </div> </div><!-- top --> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Pages</a></div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div class="header"> <div class="summary"> <a href="#func-members">Functions</a> </div> <div class="headertitle"> <div class="title">Ln<div class="ingroups"><a class="el" href="group__signal__arithmetic.html">Arithmetic Operations</a></div></div> </div> </div><!--header--> <div class="contents"> <p>Natural logarithm of each sample of a signal. <a href="#details">More...</a></p> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:gae3fcc489ca3651927532c6b7bf7b7882"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gae3fcc489ca3651927532c6b7bf7b7882">nppsLn_32f_Ctx</a> (const <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pDst, int nLength, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:gae3fcc489ca3651927532c6b7bf7b7882"><td class="mdescLeft"> </td><td class="mdescRight">32-bit floating point signal natural logarithm. <a href="#gae3fcc489ca3651927532c6b7bf7b7882">More...</a><br/></td></tr> <tr class="separator:gae3fcc489ca3651927532c6b7bf7b7882"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac20ad345169011913fd984e76b6f3203"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gac20ad345169011913fd984e76b6f3203">nppsLn_32f</a> (const <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pDst, int nLength)</td></tr> <tr class="separator:gac20ad345169011913fd984e76b6f3203"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4b02cf2ba806b319f8640e9ece882030"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga4b02cf2ba806b319f8640e9ece882030">nppsLn_64f_Ctx</a> (const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pSrc, <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pDst, int nLength, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga4b02cf2ba806b319f8640e9ece882030"><td class="mdescLeft"> </td><td class="mdescRight">64-bit floating point signal natural logarithm. <a href="#ga4b02cf2ba806b319f8640e9ece882030">More...</a><br/></td></tr> <tr class="separator:ga4b02cf2ba806b319f8640e9ece882030"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gadae65bc6e8e3aeb195ed46198ab40743"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gadae65bc6e8e3aeb195ed46198ab40743">nppsLn_64f</a> (const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pSrc, <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pDst, int nLength)</td></tr> <tr class="separator:gadae65bc6e8e3aeb195ed46198ab40743"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga638a686f577a58b6c56d66f2a90b6ac8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga638a686f577a58b6c56d66f2a90b6ac8">nppsLn_64f32f_Ctx</a> (const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pDst, int nLength, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga638a686f577a58b6c56d66f2a90b6ac8"><td class="mdescLeft"> </td><td class="mdescRight">64-bit floating point signal natural logarithm with 32-bit floating point result. <a href="#ga638a686f577a58b6c56d66f2a90b6ac8">More...</a><br/></td></tr> <tr class="separator:ga638a686f577a58b6c56d66f2a90b6ac8"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga3934c32f3e45b992ff44eda6e7eef417"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga3934c32f3e45b992ff44eda6e7eef417">nppsLn_64f32f</a> (const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pDst, int nLength)</td></tr> <tr class="separator:ga3934c32f3e45b992ff44eda6e7eef417"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga19cdb45cdf027be15f031c9e201b63fe"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga19cdb45cdf027be15f031c9e201b63fe">nppsLn_32f_I_Ctx</a> (<a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pSrcDst, int nLength, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga19cdb45cdf027be15f031c9e201b63fe"><td class="mdescLeft"> </td><td class="mdescRight">32-bit floating point signal natural logarithm. <a href="#ga19cdb45cdf027be15f031c9e201b63fe">More...</a><br/></td></tr> <tr class="separator:ga19cdb45cdf027be15f031c9e201b63fe"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gafd2327e77b003c31349a076d093a15a0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gafd2327e77b003c31349a076d093a15a0">nppsLn_32f_I</a> (<a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> *pSrcDst, int nLength)</td></tr> <tr class="separator:gafd2327e77b003c31349a076d093a15a0"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae3ac40450496a92aa87a7b84a97936c2"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gae3ac40450496a92aa87a7b84a97936c2">nppsLn_64f_I_Ctx</a> (<a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pSrcDst, int nLength, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:gae3ac40450496a92aa87a7b84a97936c2"><td class="mdescLeft"> </td><td class="mdescRight">64-bit floating point signal natural logarithm. <a href="#gae3ac40450496a92aa87a7b84a97936c2">More...</a><br/></td></tr> <tr class="separator:gae3ac40450496a92aa87a7b84a97936c2"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4d467d8b15bbbbab522e1d633d2e27ce"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga4d467d8b15bbbbab522e1d633d2e27ce">nppsLn_64f_I</a> (<a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> *pSrcDst, int nLength)</td></tr> <tr class="separator:ga4d467d8b15bbbbab522e1d633d2e27ce"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga6551fae19537601f2da454d8ff53baa6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga6551fae19537601f2da454d8ff53baa6">nppsLn_16s_Sfs_Ctx</a> (const <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pDst, int nLength, int nScaleFactor, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga6551fae19537601f2da454d8ff53baa6"><td class="mdescLeft"> </td><td class="mdescRight">16-bit signed short signal natural logarithm, scale, then clamp to saturated value. <a href="#ga6551fae19537601f2da454d8ff53baa6">More...</a><br/></td></tr> <tr class="separator:ga6551fae19537601f2da454d8ff53baa6"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga0f6443fcea5d595f9e7a4529b0637f36"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga0f6443fcea5d595f9e7a4529b0637f36">nppsLn_16s_Sfs</a> (const <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pDst, int nLength, int nScaleFactor)</td></tr> <tr class="separator:ga0f6443fcea5d595f9e7a4529b0637f36"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4497701a69ae5081adeb03d6a43c2d9e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga4497701a69ae5081adeb03d6a43c2d9e">nppsLn_32s_Sfs_Ctx</a> (const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pSrc, <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pDst, int nLength, int nScaleFactor, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga4497701a69ae5081adeb03d6a43c2d9e"><td class="mdescLeft"> </td><td class="mdescRight">32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. <a href="#ga4497701a69ae5081adeb03d6a43c2d9e">More...</a><br/></td></tr> <tr class="separator:ga4497701a69ae5081adeb03d6a43c2d9e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gadcf28c5a0be7ce7850bf06f2ce27ce64"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gadcf28c5a0be7ce7850bf06f2ce27ce64">nppsLn_32s_Sfs</a> (const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pSrc, <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pDst, int nLength, int nScaleFactor)</td></tr> <tr class="separator:gadcf28c5a0be7ce7850bf06f2ce27ce64"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga497ca65501a812818a1a90fabaf23bfb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga497ca65501a812818a1a90fabaf23bfb">nppsLn_32s16s_Sfs_Ctx</a> (const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pDst, int nLength, int nScaleFactor, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga497ca65501a812818a1a90fabaf23bfb"><td class="mdescLeft"> </td><td class="mdescRight">32-bit signed integer signal natural logarithm, scale, then clamp to 16-bit signed short saturated value. <a href="#ga497ca65501a812818a1a90fabaf23bfb">More...</a><br/></td></tr> <tr class="separator:ga497ca65501a812818a1a90fabaf23bfb"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga6fac274cb3b322e7fe3c610f0e009b4f"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga6fac274cb3b322e7fe3c610f0e009b4f">nppsLn_32s16s_Sfs</a> (const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pSrc, <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pDst, int nLength, int nScaleFactor)</td></tr> <tr class="separator:ga6fac274cb3b322e7fe3c610f0e009b4f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga7476ea22a7b58b9b95df69d43c6232ec"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga7476ea22a7b58b9b95df69d43c6232ec">nppsLn_16s_ISfs_Ctx</a> (<a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pSrcDst, int nLength, int nScaleFactor, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga7476ea22a7b58b9b95df69d43c6232ec"><td class="mdescLeft"> </td><td class="mdescRight">16-bit signed short signal natural logarithm, scale, then clamp to saturated value. <a href="#ga7476ea22a7b58b9b95df69d43c6232ec">More...</a><br/></td></tr> <tr class="separator:ga7476ea22a7b58b9b95df69d43c6232ec"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac62fca2df6d5fde58af11a0136fae435"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gac62fca2df6d5fde58af11a0136fae435">nppsLn_16s_ISfs</a> (<a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> *pSrcDst, int nLength, int nScaleFactor)</td></tr> <tr class="separator:gac62fca2df6d5fde58af11a0136fae435"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga1d6904cb1a8c28d2a5bbe47c333e17b1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#ga1d6904cb1a8c28d2a5bbe47c333e17b1">nppsLn_32s_ISfs_Ctx</a> (<a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pSrcDst, int nLength, int nScaleFactor, <a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> nppStreamCtx)</td></tr> <tr class="memdesc:ga1d6904cb1a8c28d2a5bbe47c333e17b1"><td class="mdescLeft"> </td><td class="mdescRight">32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. <a href="#ga1d6904cb1a8c28d2a5bbe47c333e17b1">More...</a><br/></td></tr> <tr class="separator:ga1d6904cb1a8c28d2a5bbe47c333e17b1"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad033a1624462e028eabeb9b5f6b51df5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__signal__ln.html#gad033a1624462e028eabeb9b5f6b51df5">nppsLn_32s_ISfs</a> (<a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> *pSrcDst, int nLength, int nScaleFactor)</td></tr> <tr class="separator:gad033a1624462e028eabeb9b5f6b51df5"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <p>Natural logarithm of each sample of a signal. </p> <h2 class="groupheader">Function Documentation</h2> <a class="anchor" id="gac62fca2df6d5fde58af11a0136fae435"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_16s_ISfs </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga7476ea22a7b58b9b95df69d43c6232ec"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_16s_ISfs_Ctx </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>16-bit signed short signal natural logarithm, scale, then clamp to saturated value. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrcDst</td><td><a class="el" href="npps_conventions_lb.html#in_place_signal_pointer">In-Place Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nScaleFactor</td><td><a class="el" href="general_conventions_lb.html#integer_result_scaling">Integer Result Scaling</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="ga0f6443fcea5d595f9e7a4529b0637f36"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_16s_Sfs </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga6551fae19537601f2da454d8ff53baa6"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_16s_Sfs_Ctx </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>16-bit signed short signal natural logarithm, scale, then clamp to saturated value. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrc</td><td><a class="el" href="npps_conventions_lb.html#source_signal_pointer">Source Signal Pointer</a>. </td></tr> <tr><td class="paramname">pDst</td><td><a class="el" href="npps_conventions_lb.html#destination_signal_pointer">Destination Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nScaleFactor</td><td><a class="el" href="general_conventions_lb.html#integer_result_scaling">Integer Result Scaling</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="gac20ad345169011913fd984e76b6f3203"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32f </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="gae3fcc489ca3651927532c6b7bf7b7882"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32f_Ctx </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>32-bit floating point signal natural logarithm. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrc</td><td><a class="el" href="npps_conventions_lb.html#source_signal_pointer">Source Signal Pointer</a>. </td></tr> <tr><td class="paramname">pDst</td><td><a class="el" href="npps_conventions_lb.html#destination_signal_pointer">Destination Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="gafd2327e77b003c31349a076d093a15a0"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32f_I </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga19cdb45cdf027be15f031c9e201b63fe"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32f_I_Ctx </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>32-bit floating point signal natural logarithm. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrcDst</td><td><a class="el" href="npps_conventions_lb.html#in_place_signal_pointer">In-Place Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="ga6fac274cb3b322e7fe3c610f0e009b4f"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32s16s_Sfs </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga497ca65501a812818a1a90fabaf23bfb"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32s16s_Sfs_Ctx </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga2eea681138ed3607f6a540f8a1c73b85">Npp16s</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>32-bit signed integer signal natural logarithm, scale, then clamp to 16-bit signed short saturated value. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrc</td><td><a class="el" href="npps_conventions_lb.html#source_signal_pointer">Source Signal Pointer</a>. </td></tr> <tr><td class="paramname">pDst</td><td><a class="el" href="npps_conventions_lb.html#destination_signal_pointer">Destination Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nScaleFactor</td><td><a class="el" href="general_conventions_lb.html#integer_result_scaling">Integer Result Scaling</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="gad033a1624462e028eabeb9b5f6b51df5"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32s_ISfs </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga1d6904cb1a8c28d2a5bbe47c333e17b1"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32s_ISfs_Ctx </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrcDst</td><td><a class="el" href="npps_conventions_lb.html#in_place_signal_pointer">In-Place Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nScaleFactor</td><td><a class="el" href="general_conventions_lb.html#integer_result_scaling">Integer Result Scaling</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="gadcf28c5a0be7ce7850bf06f2ce27ce64"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32s_Sfs </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga4497701a69ae5081adeb03d6a43c2d9e"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_32s_Sfs_Ctx </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gafa3572058d57d93e2e5ebb9b21fbedb3">Npp32s</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nScaleFactor</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>32-bit signed integer signal natural logarithm, scale, then clamp to saturated value. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrc</td><td><a class="el" href="npps_conventions_lb.html#source_signal_pointer">Source Signal Pointer</a>. </td></tr> <tr><td class="paramname">pDst</td><td><a class="el" href="npps_conventions_lb.html#destination_signal_pointer">Destination Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nScaleFactor</td><td><a class="el" href="general_conventions_lb.html#integer_result_scaling">Integer Result Scaling</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="gadae65bc6e8e3aeb195ed46198ab40743"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_64f </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga3934c32f3e45b992ff44eda6e7eef417"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_64f32f </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="ga638a686f577a58b6c56d66f2a90b6ac8"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_64f32f_Ctx </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#ga274ed0e3c4cbc89f644143f64e2391ee">Npp32f</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>64-bit floating point signal natural logarithm with 32-bit floating point result. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrc</td><td><a class="el" href="npps_conventions_lb.html#source_signal_pointer">Source Signal Pointer</a>. </td></tr> <tr><td class="paramname">pDst</td><td><a class="el" href="npps_conventions_lb.html#destination_signal_pointer">Destination Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="ga4b02cf2ba806b319f8640e9ece882030"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_64f_Ctx </td> <td>(</td> <td class="paramtype">const <a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pSrc</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>64-bit floating point signal natural logarithm. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrc</td><td><a class="el" href="npps_conventions_lb.html#source_signal_pointer">Source Signal Pointer</a>. </td></tr> <tr><td class="paramname">pDst</td><td><a class="el" href="npps_conventions_lb.html#destination_signal_pointer">Destination Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> <a class="anchor" id="ga4d467d8b15bbbbab522e1d633d2e27ce"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_64f_I </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> </div> </div> <a class="anchor" id="gae3ac40450496a92aa87a7b84a97936c2"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__typedefs__npp.html#ga1105a17b5e76381583c46ecd6a60fe21">NppStatus</a> nppsLn_64f_I_Ctx </td> <td>(</td> <td class="paramtype"><a class="el" href="group__npp__basic__types.html#gae8a11911011c6c6557f66abada886a27">Npp64f</a> * </td> <td class="paramname"><em>pSrcDst</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>nLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="struct_npp_stream_context.html">NppStreamContext</a> </td> <td class="paramname"><em>nppStreamCtx</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>64-bit floating point signal natural logarithm. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pSrcDst</td><td><a class="el" href="npps_conventions_lb.html#in_place_signal_pointer">In-Place Signal Pointer</a>. </td></tr> <tr><td class="paramname">nLength</td><td><a class="el" href="npps_conventions_lb.html#length_specification">Signal Length</a>. </td></tr> <tr><td class="paramname">nppStreamCtx</td><td><a class="el" href="index.html#application_managed_stream_context">Application Managed Stream Context</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd><a class="el" href="npps_conventions_lb.html#signal_data_error_codes">Signal Data Related Error Codes</a>, <a class="el" href="npps_conventions_lb.html#length_error_codes">Length Related Error Codes</a>. </dd></dl> </div> </div> </div><!-- contents --> <HR> <center>Copyright © 2009-2019 NVIDIA Corporation</center> <HR>