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| author | rihab kouki <rihab.kouki@st.com> | 2020-07-28 11:24:49 +0100 |
|---|---|---|
| committer | rihab kouki <rihab.kouki@st.com> | 2020-07-28 11:24:49 +0100 |
| commit | 96d6da4e252b06dcfdc041e7df23e86161c33007 (patch) | |
| tree | a262f59bb1db7ec7819acae435f5049cbe5e2354 /docs/DSP/html/group__CFFT__CIFFT.html | |
| parent | 9f95ff5b6ba01db09552b84a0ab79607060a2666 (diff) | |
| download | st-cmsis-core-lowfat-master.tar.gz st-cmsis-core-lowfat-master.tar.bz2 st-cmsis-core-lowfat-master.zip | |
Diffstat (limited to 'docs/DSP/html/group__CFFT__CIFFT.html')
| -rw-r--r-- | docs/DSP/html/group__CFFT__CIFFT.html | 258 |
1 files changed, 120 insertions, 138 deletions
diff --git a/docs/DSP/html/group__CFFT__CIFFT.html b/docs/DSP/html/group__CFFT__CIFFT.html index 92b08ab..b257e0c 100644 --- a/docs/DSP/html/group__CFFT__CIFFT.html +++ b/docs/DSP/html/group__CFFT__CIFFT.html @@ -32,7 +32,7 @@ <td id="projectlogo"><img alt="Logo" src="CMSIS_Logo_Final.png"/></td> <td style="padding-left: 0.5em;"> <div id="projectname">CMSIS-DSP -  <span id="projectnumber">Version 1.5.2</span> +  <span id="projectnumber">Version 1.7.0</span> </div> <div id="projectbrief">CMSIS DSP Software Library</div> </td> @@ -117,8 +117,10 @@ $(document).ready(function(){initNavTree('group__CFFT__CIFFT.html','');}); <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a> Variables</h2></td></tr> <tr class="memitem:gae247e83ad50d474107254e25b36ad42b"><td class="memItemLeft" align="right" valign="top">const uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#gae247e83ad50d474107254e25b36ad42b">armBitRevTable</a> [1024]</td></tr> +<tr class="memdesc:gae247e83ad50d474107254e25b36ad42b"><td class="mdescLeft"> </td><td class="mdescRight">Table for bit reversal process. <a href="#gae247e83ad50d474107254e25b36ad42b">More...</a><br/></td></tr> <tr class="separator:gae247e83ad50d474107254e25b36ad42b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae75e243ec61706427314270f222e0c8e"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#gae75e243ec61706427314270f222e0c8e">twiddleCoef_16</a> [32]</td></tr> +<tr class="memdesc:gae75e243ec61706427314270f222e0c8e"><td class="mdescLeft"> </td><td class="mdescRight">Floating-point Twiddle factors Table Generation. <a href="#gae75e243ec61706427314270f222e0c8e">More...</a><br/></td></tr> <tr class="separator:gae75e243ec61706427314270f222e0c8e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga78a72c85d88185de98050c930cfc76e3"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#ga78a72c85d88185de98050c930cfc76e3">twiddleCoef_32</a> [64]</td></tr> <tr class="separator:ga78a72c85d88185de98050c930cfc76e3"><td class="memSeparator" colspan="2"> </td></tr> @@ -137,6 +139,7 @@ Variables</h2></td></tr> <tr class="memitem:gae0182d1dd3b2f21aad4e38a815a0bd40"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#gae0182d1dd3b2f21aad4e38a815a0bd40">twiddleCoef_4096</a> [8192]</td></tr> <tr class="separator:gae0182d1dd3b2f21aad4e38a815a0bd40"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaef4697e1ba348c4ac9358f2b9e279e93"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#gaef4697e1ba348c4ac9358f2b9e279e93">twiddleCoef_16_q31</a> [24]</td></tr> +<tr class="memdesc:gaef4697e1ba348c4ac9358f2b9e279e93"><td class="mdescLeft"> </td><td class="mdescRight">Q31 Twiddle factors Table. <a href="#gaef4697e1ba348c4ac9358f2b9e279e93">More...</a><br/></td></tr> <tr class="separator:gaef4697e1ba348c4ac9358f2b9e279e93"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga8ba78d5e6ef4bdc58e8f0044e0664a0a"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#ga8ba78d5e6ef4bdc58e8f0044e0664a0a">twiddleCoef_32_q31</a> [48]</td></tr> <tr class="separator:ga8ba78d5e6ef4bdc58e8f0044e0664a0a"><td class="memSeparator" colspan="2"> </td></tr> @@ -155,6 +158,7 @@ Variables</h2></td></tr> <tr class="memitem:ga67c0890317deab3391e276f22c1fc400"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#ga67c0890317deab3391e276f22c1fc400">twiddleCoef_4096_q31</a> [6144]</td></tr> <tr class="separator:ga67c0890317deab3391e276f22c1fc400"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga8e4e2e05f4a3112184c96cb3308d6c39"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#ga8e4e2e05f4a3112184c96cb3308d6c39">twiddleCoef_16_q15</a> [24]</td></tr> +<tr class="memdesc:ga8e4e2e05f4a3112184c96cb3308d6c39"><td class="mdescLeft"> </td><td class="mdescRight">q15 Twiddle factors Table <a href="#ga8e4e2e05f4a3112184c96cb3308d6c39">More...</a><br/></td></tr> <tr class="separator:ga8e4e2e05f4a3112184c96cb3308d6c39"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac194a4fe04a19051ae1811f69c6e5df2"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CFFT__CIFFT.html#gac194a4fe04a19051ae1811f69c6e5df2">twiddleCoef_32_q15</a> [48]</td></tr> <tr class="separator:gac194a4fe04a19051ae1811f69c6e5df2"><td class="memSeparator" colspan="2"> </td></tr> @@ -185,24 +189,22 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Pseudo code for Generation of Bit reversal Table is </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(l=1;l <= N/4;l++) +<dl class="section user"><dt></dt><dd><pre>for (l = 1; l <= N/4; l++) { - for(i=0;i<logN2;i++) + for (i = 0; i< logN2; i++) { - a[i]=l&(1<<i); + a[i] = l & (1 << i); } - for(j=0; j<logN2; j++) + for (j = 0; j < logN2; j++) { - if (a[j]!=0) - y[l]+=(1<<((logN2-1)-j)); + if (a[j] != 0) + y[l] += (1 << ((logN2 - 1) - j)); } y[l] = y[l] >> 1; } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 4096 logN2 = 12 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096, logN2 = 12 </dd></dl> <dl class="section user"><dt></dt><dd>N is the maximum FFT Size supported </dd></dl> -<p>Referenced by <a class="el" href="group__ComplexFFT.html#gac9565e6bc7229577ecf5e090313cafd7">arm_cfft_radix2_init_f32()</a>, <a class="el" href="group__ComplexFFT.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, <a class="el" href="group__ComplexFFT.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, <a class="el" href="group__ComplexFFT.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, <a class="el" href="group__ComplexFFT.html#ga0c2acfda3126c452e75b81669e8ad9ef">arm_cfft_radix4_init_q15()</a>, and <a class="el" href="group__ComplexFFT.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>.</p> - </div> </div> <a class="anchor" id="ga27c056eb130a4333d1cc5dd43ec738b1"></a> @@ -215,16 +217,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 1024 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 1024, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="ga8a0ec95d866fe96b740e77d6e1356b59"></a> @@ -237,12 +237,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 1024 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 1024, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -258,12 +258,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 1024 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 1024, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -279,16 +279,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 128 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 128, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="gabfdd1c5cd2b3f96da5fe5f07c707a8e5"></a> @@ -301,12 +299,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 128 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 128, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -322,12 +320,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i < 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 128 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 128, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -343,16 +341,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i < N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 16 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 16, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="ga8e4e2e05f4a3112184c96cb3308d6c39"></a> @@ -365,12 +361,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>fori = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 16 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 16, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -386,12 +382,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre> for(i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 16 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 16, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -407,16 +403,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 2048 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 2048, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="gadd16ce08ffd1048c385e0534a3b19cbb"></a> @@ -429,12 +423,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 2048 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 2048, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -450,12 +444,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 2048 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 2048, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -473,14 +467,12 @@ Variables</h2></td></tr> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> <dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 256 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 256, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="ga6099ae5262a0a3a8d9ce1e6da02f0c2e"></a> @@ -493,12 +485,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 256 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 256, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -514,12 +506,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 256 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 256, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -535,16 +527,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 32 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 32, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="gac194a4fe04a19051ae1811f69c6e5df2"></a> @@ -557,12 +547,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 32 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 32, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -578,12 +568,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 32 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 32, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -599,12 +589,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 4096 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> </div> @@ -619,17 +609,15 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 4096 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> -<p>Referenced by <a class="el" href="group__ComplexFFT.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group__ComplexFFT.html#ga0c2acfda3126c452e75b81669e8ad9ef">arm_cfft_radix4_init_q15()</a>.</p> - </div> </div> <a class="anchor" id="ga67c0890317deab3391e276f22c1fc400"></a> @@ -642,17 +630,15 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 4096 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> -<p>Referenced by <a class="el" href="group__ComplexFFT.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group__ComplexFFT.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>.</p> - </div> </div> <a class="anchor" id="gad8830f0c068ab2cc19f2f87d220fa148"></a> @@ -665,16 +651,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 512 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 512, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="ga6152621af210f847128c6f38958fa385"></a> @@ -687,12 +671,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 512 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 512, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -708,12 +692,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 512 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 512, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -729,16 +713,14 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i < N/; i++) { - twiddleCoef[2*i]= cos(i * 2*PI/(float)N); - twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoef[2*i] = cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 64 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 64, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> -<p>Referenced by <a class="el" href="group__RealFFT.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> - </div> </div> <a class="anchor" id="gaa0cc411e0b3c82078e85cfdf1b84290f"></a> @@ -751,12 +733,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefq15[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 64 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 64, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> @@ -772,12 +754,12 @@ Variables</h2></td></tr> </table> </div><div class="memdoc"> <dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> -<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +<dl class="section user"><dt></dt><dd><pre>for (i = 0; i< 3N/4; i++) { - twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); - twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); + twiddleCoefQ31[2*i] = cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1] = sin(i * 2*PI/(float)N); } </pre> </dd></dl> -<dl class="section user"><dt></dt><dd>where N = 64 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 64, PI = 3.14159265358979 </dd></dl> <dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> <dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> @@ -788,7 +770,7 @@ Variables</h2></td></tr> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> - <li class="footer">Generated on Wed Aug 1 2018 17:12:22 for CMSIS-DSP by Arm Ltd. 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