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| <h1>arm_biquad_cascade_df2T_init_f32.c</h1> </div> |
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| <a href="arm__biquad__cascade__df2_t__init__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*----------------------------------------------------------------------------- </span> |
| <a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span> |
| <a name="l00003"></a>00003 <span class="comment">* </span> |
| <a name="l00004"></a>00004 <span class="comment">* $Date: 15. July 2011 </span> |
| <a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.10 </span> |
| <a name="l00006"></a>00006 <span class="comment">* </span> |
| <a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span> |
| <a name="l00008"></a>00008 <span class="comment">* Title: arm_biquad_cascade_df2T_init_f32.c </span> |
| <a name="l00009"></a>00009 <span class="comment">* </span> |
| <a name="l00010"></a>00010 <span class="comment">* Description: Initialization function for the floating-point transposed </span> |
| <a name="l00011"></a>00011 <span class="comment">* direct form II Biquad cascade filter. </span> |
| <a name="l00012"></a>00012 <span class="comment">* </span> |
| <a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0</span> |
| <a name="l00014"></a>00014 <span class="comment">* </span> |
| <a name="l00015"></a>00015 <span class="comment">* Version 1.0.10 2011/7/15 </span> |
| <a name="l00016"></a>00016 <span class="comment">* Big Endian support added and Merged M0 and M3/M4 Source code. </span> |
| <a name="l00017"></a>00017 <span class="comment">* </span> |
| <a name="l00018"></a>00018 <span class="comment">* Version 1.0.3 2010/11/29 </span> |
| <a name="l00019"></a>00019 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span> |
| <a name="l00020"></a>00020 <span class="comment">* </span> |
| <a name="l00021"></a>00021 <span class="comment">* Version 1.0.2 2010/11/11 </span> |
| <a name="l00022"></a>00022 <span class="comment">* Documentation updated. </span> |
| <a name="l00023"></a>00023 <span class="comment">* </span> |
| <a name="l00024"></a>00024 <span class="comment">* Version 1.0.1 2010/10/05 </span> |
| <a name="l00025"></a>00025 <span class="comment">* Production release and review comments incorporated. </span> |
| <a name="l00026"></a>00026 <span class="comment">* </span> |
| <a name="l00027"></a>00027 <span class="comment">* Version 1.0.0 2010/09/20 </span> |
| <a name="l00028"></a>00028 <span class="comment">* Production release and review comments incorporated </span> |
| <a name="l00029"></a>00029 <span class="comment">* </span> |
| <a name="l00030"></a>00030 <span class="comment">* Version 0.0.7 2010/06/10 </span> |
| <a name="l00031"></a>00031 <span class="comment">* Misra-C changes done </span> |
| <a name="l00032"></a>00032 <span class="comment">* ---------------------------------------------------------------------------*/</span> |
| <a name="l00033"></a>00033 |
| <a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span> |
| <a name="l00035"></a>00035 |
| <a name="l00073"></a><a class="code" href="group___biquad_cascade_d_f2_t.html#ga70eaddf317a4a8bde6bd6a97df67fedd">00073</a> <span class="keywordtype">void</span> <a class="code" href="group___biquad_cascade_d_f2_t.html#ga70eaddf317a4a8bde6bd6a97df67fedd" title="Initialization function for the floating-point transposed direct form II Biquad cascade filter...">arm_biquad_cascade_df2T_init_f32</a>( |
| <a name="l00074"></a>00074 <a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html" title="Instance structure for the floating-point transposed direct form II Biquad cascade filter...">arm_biquad_cascade_df2T_instance_f32</a> * S, |
| <a name="l00075"></a>00075 uint8_t numStages, |
| <a name="l00076"></a>00076 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pCoeffs, |
| <a name="l00077"></a>00077 <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> * pState) |
| <a name="l00078"></a>00078 { |
| <a name="l00079"></a>00079 <span class="comment">/* Assign filter stages */</span> |
| <a name="l00080"></a>00080 S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a4d17958c33c3d0a905f974bac50f033f">numStages</a> = numStages; |
| <a name="l00081"></a>00081 |
| <a name="l00082"></a>00082 <span class="comment">/* Assign coefficient pointer */</span> |
| <a name="l00083"></a>00083 S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a49a24fe1b6ad3b0b26779c32d8d80b2e">pCoeffs</a> = pCoeffs; |
| <a name="l00084"></a>00084 |
| <a name="l00085"></a>00085 <span class="comment">/* Clear state buffer and size is always 2 * numStages */</span> |
| <a name="l00086"></a>00086 memset(pState, 0, (2u * (uint32_t) numStages) * <span class="keyword">sizeof</span>(<a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a>)); |
| <a name="l00087"></a>00087 |
| <a name="l00088"></a>00088 <span class="comment">/* Assign state pointer */</span> |
| <a name="l00089"></a>00089 S-><a class="code" href="structarm__biquad__cascade__df2_t__instance__f32.html#a24d223addfd926a7177088cf2efe76b1">pState</a> = pState; |
| <a name="l00090"></a>00090 } |
| <a name="l00091"></a>00091 |
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