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  45 <h1>arm_sin_cos_example_f32.c</h1>  </div>
  46 </div>
  47 <div class="contents">
  48 <div class="fragment"><pre class="fragment"><span class="comment">/* ---------------------------------------------------------------------- </span>
  49 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved.   </span>
  50 <span class="comment">*  </span>
  51 <span class="comment">* $Date:        29. November 2010  </span>
  52 <span class="comment">* $Revision:    V1.0.3</span>
  53 <span class="comment">*  </span>
  54 <span class="comment">* Project:      CMSIS DSP Library  </span>
  55 <span class="comment">* Title:        arm_sin_cos_example_f32.c         </span>
  56 <span class="comment">*  </span>
  57 <span class="comment">* Description:  Example code demonstrating sin and cos calculation of input signal. </span>
  58 <span class="comment">* </span>
  59 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3  </span>
  60 <span class="comment">*</span>
  61 <span class="comment">*</span>
  62 <span class="comment">* Version 1.0.3 2010/11/29 </span>
  63 <span class="comment">*    Re-organized the CMSIS folders and updated documentation. </span>
  64 <span class="comment">* </span>
  65 <span class="comment">* Version 1.0.1 2010/10/05 KK </span>
  66 <span class="comment">*    Production release and review comments incorporated.  </span>
  67 <span class="comment">*</span>
  68 <span class="comment">* Version 1.0.0 2010/09/20 KK</span>
  69 <span class="comment">*    Production release and review comments incorporated.</span>
  70 <span class="comment">* ------------------------------------------------------------------- */</span>
  71
  72 <span class="preprocessor">#include &lt;math.h&gt;</span>
  73 <span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span>
  74
  75 <span class="comment">/* ---------------------------------------------------------------------- </span>
  76 <span class="comment">* Defines each of the tests performed </span>
  77 <span class="comment">* ------------------------------------------------------------------- */</span>
  78 <span class="preprocessor">#define MAX_BLOCKSIZE   32 </span>
  79 <span class="preprocessor"></span><span class="preprocessor">#define DELTA           (0.000001f) </span>
  80 <span class="preprocessor"></span>
  81
  82 <span class="comment">/* ---------------------------------------------------------------------- </span>
  83 <span class="comment">* Test input data for Floating point sin_cos example for 32-blockSize </span>
  84 <span class="comment">* Generated by the MATLAB randn() function </span>
  85 <span class="comment">* ------------------------------------------------------------------- */</span>
  86
  87 <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a0"></a><a class="code" href="arm__graphic__equalizer__example__q31_8c.html#aa4699dc6ee05353c83e0be4e69f6ad05">testInput_f32</a>[<a name="a1"></a><a class="code" href="arm__convolution__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =
  88 {
  89     -1.244916875853235400,  -4.793533929171324800,  0.360705030233248850,   0.827929644170887320,   -3.299532218312426900,  3.427441903227623800,   3.422401784294607700,   -0.108308165334010680,
  90     0.941943896490312180,   0.502609575000365850,   -0.537345278736373500,  2.088817392965764500,   -1.693168684143455700,  6.283185307179590700,   -0.392545884746175080,  0.327893095115825040,
  91     3.070147440456292300,   0.170611405884662230,   -0.275275082396073010,  -2.395492805446796300,  0.847311163536506600,   -3.845517018083148800,  2.055818378415868300,   4.672594161978930800,
  92     -1.990923030266425800,  2.469305197656249500,   3.609002606064021000,   -4.586736582331667500,  -4.147080139136136300,  1.643756718868359500,   -1.150866392366494800,  1.985805026477433800
  93
  94
  95 };
  96
  97 <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a2"></a><a class="code" href="arm__convolution__example__f32_8c.html#a6463f7327432fc62ad9f6017593330d3">testRefOutput_f32</a> = 1.000000000;
  98
  99 <span class="comment">/* ---------------------------------------------------------------------- </span>
 100 <span class="comment">* Declare Global variables  </span>
 101 <span class="comment">* ------------------------------------------------------------------- */</span>
 102 uint32_t <a name="a3"></a><a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a> = 32;
 103 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>  <a name="a4"></a><a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>;
 104 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>  <a name="a5"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a>;
 105 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>  <a name="a6"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a>;
 106 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>  <a name="a7"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a2cb185794dcb587d158f346ab049cc4e">cosSquareOutput</a>;
 107 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>  <a name="a8"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#aa5a66e866ebb91eb971f2805209e9d36">sinSquareOutput</a>;
 108
 109 <span class="comment">/* ---------------------------------------------------------------------- </span>
 110 <span class="comment">* Max magnitude FFT Bin test </span>
 111 <span class="comment">* ------------------------------------------------------------------- */</span>
 112
 113 <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> <a name="a9"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>;
 114
 115 int32_t <a name="a10"></a><a class="code" href="arm__class__marks__example__f32_8c.html#a196718f834091385d38586a0ce4009dc">main</a>(<span class="keywordtype">void</span>)
 116 {
 117     <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> diff;
 118     uint32_t i;
 119
 120     <span class="keywordflow">for</span>(i=0; i&lt; <a class="code" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>; i++)
 121     {
 122         <a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a> = <a name="a11"></a><a class="code" href="group__cos.html#gace15287f9c64b9b4084d1c797d4c49d8" title="Fast approximation to the trigonometric cosine function for floating-point data.">arm_cos_f32</a>(<a class="code" href="arm__graphic__equalizer__example__q31_8c.html#aa4699dc6ee05353c83e0be4e69f6ad05">testInput_f32</a>[i]);
 123         <a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a> = <a name="a12"></a><a class="code" href="group__sin.html#gae164899c4a3fc0e946dc5d55555fe541" title="Fast approximation to the trigonometric sine function for floating-point data.">arm_sin_f32</a>(<a class="code" href="arm__graphic__equalizer__example__q31_8c.html#aa4699dc6ee05353c83e0be4e69f6ad05">testInput_f32</a>[i]);
 124
 125         <a name="a13"></a><a class="code" href="group___basic_mult.html#gaca3f0b8227da431ab29225b88888aa32" title="Floating-point vector multiplication.">arm_mult_f32</a>(&amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a2cb185794dcb587d158f346ab049cc4e">cosSquareOutput</a>, 1);
 126         <a class="code" href="group___basic_mult.html#gaca3f0b8227da431ab29225b88888aa32" title="Floating-point vector multiplication.">arm_mult_f32</a>(&amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#aa5a66e866ebb91eb971f2805209e9d36">sinSquareOutput</a>, 1);
 127
 128         <a name="a14"></a><a class="code" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd" title="Floating-point vector addition.">arm_add_f32</a>(&amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a2cb185794dcb587d158f346ab049cc4e">cosSquareOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#aa5a66e866ebb91eb971f2805209e9d36">sinSquareOutput</a>, &amp;<a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>, 1);
 129
 130         <span class="comment">/* absolute value of difference between ref and test */</span>
 131         diff = fabsf(<a class="code" href="arm__convolution__example__f32_8c.html#a6463f7327432fc62ad9f6017593330d3">testRefOutput_f32</a> - <a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>);
 132
 133         <span class="comment">/* Comparison of sin_cos value with reference */</span>
 134         <span class="keywordflow">if</span>(diff &gt; <a name="a15"></a><a class="code" href="arm__convolution__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>)
 135         {
 136            <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = <a name="a16"></a><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>;
 137         }
 138
 139         <span class="keywordflow">if</span>( <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> == <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>)
 140         {
 141            <span class="keywordflow">while</span>(1);
 142         }
 143
 144     }
 145 }
 146
 147 </pre></div> </div>
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