You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
144 lines
7.1 KiB
144 lines
7.1 KiB
<!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"/> |
|
|
|
<title>intrinsic_exponential.hpp Source File</title> |
|
<link href="tabs.css" rel="stylesheet" type="text/css"/> |
|
<link href="doxygen.css" rel="stylesheet" type="text/css" /> |
|
|
|
|
|
|
|
</head> |
|
<body> |
|
<div id="top"><!-- do not remove this div! --> |
|
|
|
|
|
<div id="titlearea"> |
|
<table cellspacing="0" cellpadding="0"> |
|
<tbody> |
|
<tr style="height: 56px;"> |
|
|
|
<td id="projectlogo"><img alt="Logo" src="logo-mini.png"/></td> |
|
|
|
|
|
|
|
|
|
|
|
|
|
</tr> |
|
</tbody> |
|
</table> |
|
</div> |
|
|
|
<!-- Generated by Doxygen 1.7.5 --> |
|
<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>Classes</span></a></li> |
|
<li class="current"><a href="files.html"><span>Files</span></a></li> |
|
</ul> |
|
</div> |
|
<div id="navrow2" class="tabs2"> |
|
<ul class="tablist"> |
|
<li><a href="files.html"><span>File List</span></a></li> |
|
</ul> |
|
</div> |
|
<div class="header"> |
|
<div class="headertitle"> |
|
<div class="title">intrinsic_exponential.hpp</div> </div> |
|
</div> |
|
<div class="contents"> |
|
<a href="a00060.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 |
|
<a name="l00002"></a>00002 |
|
<a name="l00003"></a>00003 |
|
<a name="l00004"></a>00004 |
|
<a name="l00005"></a>00005 |
|
<a name="l00006"></a>00006 |
|
<a name="l00007"></a>00007 |
|
<a name="l00008"></a>00008 |
|
<a name="l00009"></a>00009 |
|
<a name="l00010"></a>00010 |
|
<a name="l00011"></a>00011 |
|
<a name="l00012"></a>00012 |
|
<a name="l00013"></a>00013 |
|
<a name="l00014"></a>00014 |
|
<a name="l00015"></a>00015 |
|
<a name="l00016"></a>00016 |
|
<a name="l00017"></a>00017 |
|
<a name="l00018"></a>00018 |
|
<a name="l00019"></a>00019 |
|
<a name="l00020"></a>00020 |
|
<a name="l00021"></a>00021 |
|
<a name="l00022"></a>00022 |
|
<a name="l00023"></a>00023 |
|
<a name="l00024"></a>00024 |
|
<a name="l00025"></a>00025 |
|
<a name="l00026"></a>00026 |
|
<a name="l00027"></a>00027 |
|
<a name="l00028"></a>00028 |
|
<a name="l00029"></a>00029 <span class="preprocessor">#ifndef glm_detail_intrinsic_exponential</span> |
|
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define glm_detail_intrinsic_exponential</span> |
|
<a name="l00031"></a>00031 <span class="preprocessor"></span> |
|
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="a00098.html" title="OpenGL Mathematics (glm.g-truc.net)">setup.hpp</a>"</span> |
|
<a name="l00033"></a>00033 |
|
<a name="l00034"></a>00034 <span class="preprocessor">#if((GLM_ARCH & GLM_ARCH_SSE2) != GLM_ARCH_SSE2)</span> |
|
<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor"># error "SSE2 instructions not supported or enabled"</span> |
|
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#else</span> |
|
<a name="l00037"></a>00037 <span class="preprocessor"></span> |
|
<a name="l00038"></a>00038 <span class="keyword">namespace </span>glm{ |
|
<a name="l00039"></a>00039 <span class="keyword">namespace </span>detail |
|
<a name="l00040"></a>00040 { |
|
<a name="l00041"></a>00041 <span class="comment">/*</span> |
|
<a name="l00042"></a>00042 <span class="comment">GLM_FUNC_QUALIFIER __m128 sse_rsqrt_nr_ss(__m128 const x)</span> |
|
<a name="l00043"></a>00043 <span class="comment">{</span> |
|
<a name="l00044"></a>00044 <span class="comment"> __m128 recip = _mm_rsqrt_ss( x ); // "estimate" opcode</span> |
|
<a name="l00045"></a>00045 <span class="comment"> const static __m128 three = { 3, 3, 3, 3 }; // aligned consts for fast load</span> |
|
<a name="l00046"></a>00046 <span class="comment"> const static __m128 half = { 0.5,0.5,0.5,0.5 };</span> |
|
<a name="l00047"></a>00047 <span class="comment"> __m128 halfrecip = _mm_mul_ss( half, recip );</span> |
|
<a name="l00048"></a>00048 <span class="comment"> __m128 threeminus_xrr = _mm_sub_ss( three, _mm_mul_ss( x, _mm_mul_ss ( recip, recip ) ) );</span> |
|
<a name="l00049"></a>00049 <span class="comment"> return _mm_mul_ss( halfrecip, threeminus_xrr );</span> |
|
<a name="l00050"></a>00050 <span class="comment">}</span> |
|
<a name="l00051"></a>00051 <span class="comment"> </span> |
|
<a name="l00052"></a>00052 <span class="comment">GLM_FUNC_QUALIFIER __m128 sse_normalize_fast_ps( float * RESTRICT vOut, float * RESTRICT vIn )</span> |
|
<a name="l00053"></a>00053 <span class="comment">{</span> |
|
<a name="l00054"></a>00054 <span class="comment"> __m128 x = _mm_load_ss(&vIn[0]);</span> |
|
<a name="l00055"></a>00055 <span class="comment"> __m128 y = _mm_load_ss(&vIn[1]);</span> |
|
<a name="l00056"></a>00056 <span class="comment"> __m128 z = _mm_load_ss(&vIn[2]);</span> |
|
<a name="l00057"></a>00057 <span class="comment"> </span> |
|
<a name="l00058"></a>00058 <span class="comment"> const __m128 l = // compute x*x + y*y + z*z</span> |
|
<a name="l00059"></a>00059 <span class="comment"> _mm_add_ss(</span> |
|
<a name="l00060"></a>00060 <span class="comment"> _mm_add_ss( _mm_mul_ss(x,x),</span> |
|
<a name="l00061"></a>00061 <span class="comment"> _mm_mul_ss(y,y)</span> |
|
<a name="l00062"></a>00062 <span class="comment"> ),</span> |
|
<a name="l00063"></a>00063 <span class="comment"> _mm_mul_ss( z, z )</span> |
|
<a name="l00064"></a>00064 <span class="comment"> );</span> |
|
<a name="l00065"></a>00065 <span class="comment"> </span> |
|
<a name="l00066"></a>00066 <span class="comment"> </span> |
|
<a name="l00067"></a>00067 <span class="comment"> const __m128 rsqt = _mm_rsqrt_nr_ss( l );</span> |
|
<a name="l00068"></a>00068 <span class="comment"> _mm_store_ss( &vOut[0] , _mm_mul_ss( rsqt, x ) );</span> |
|
<a name="l00069"></a>00069 <span class="comment"> _mm_store_ss( &vOut[1] , _mm_mul_ss( rsqt, y ) );</span> |
|
<a name="l00070"></a>00070 <span class="comment"> _mm_store_ss( &vOut[2] , _mm_mul_ss( rsqt, z ) );</span> |
|
<a name="l00071"></a>00071 <span class="comment"> </span> |
|
<a name="l00072"></a>00072 <span class="comment"> return _mm_mul_ss( l , rsqt );</span> |
|
<a name="l00073"></a>00073 <span class="comment">}</span> |
|
<a name="l00074"></a>00074 <span class="comment">*/</span> |
|
<a name="l00075"></a>00075 }<span class="comment">//namespace detail</span> |
|
<a name="l00076"></a>00076 }<span class="comment">//namespace glm</span> |
|
<a name="l00077"></a>00077 |
|
<a name="l00078"></a>00078 <span class="preprocessor">#endif//GLM_ARCH</span> |
|
<a name="l00079"></a>00079 <span class="preprocessor"></span><span class="preprocessor">#endif//glm_detail_intrinsic_exponential</span> |
|
</pre></div></div> |
|
</div> |
|
|
|
|
|
<hr class="footer"/><address class="footer"><small> |
|
Generated by  <a href="http://www.doxygen.org/index.html"> |
|
<img class="footer" src="doxygen.png" alt="doxygen"/> |
|
</a> 1.7.5 |
|
</small></address> |
|
|
|
</body> |
|
</html>
|
|
|