288 lines
15 KiB
HTML
288 lines
15 KiB
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<div class="title">Real FFT Tables<div class="ingroups"><a class="el" href="group__RealFFT.html">Real FFT Functions</a></div></div> </div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
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Variables</h2></td></tr>
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<tr class="memitem:ga8b1ad947c470596674fa3364e16045c6"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#ga8b1ad947c470596674fa3364e16045c6">realCoefA</a> [8192]</td></tr>
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<tr class="separator:ga8b1ad947c470596674fa3364e16045c6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac52f98b52a1f03bfac8b57a67ba07397"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#gac52f98b52a1f03bfac8b57a67ba07397">realCoefB</a> [8192]</td></tr>
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<tr class="separator:gac52f98b52a1f03bfac8b57a67ba07397"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga11e84d0ee257a547f749b37dd0078d36"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#ga11e84d0ee257a547f749b37dd0078d36">realCoefAQ15</a> [8192]</td></tr>
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<tr class="separator:ga11e84d0ee257a547f749b37dd0078d36"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac871666f018b70938b2b98017628cb97"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT__Table.html#gac871666f018b70938b2b98017628cb97">realCoefBQ15</a> [8192]</td></tr>
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<tr class="separator:gac871666f018b70938b2b98017628cb97"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaf1592a6cf0504675205074a43c3728a2"><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__RealFFT__Table.html#gaf1592a6cf0504675205074a43c3728a2">realCoefAQ31</a> [8192]</td></tr>
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<tr class="separator:gaf1592a6cf0504675205074a43c3728a2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1eb5745728a61c3715755f5d69a4a960"><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__RealFFT__Table.html#ga1eb5745728a61c3715755f5d69a4a960">realCoefBQ31</a> [8192]</td></tr>
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<tr class="separator:ga1eb5745728a61c3715755f5d69a4a960"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
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<h2 class="groupheader">Variable Documentation</h2>
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<a class="anchor" id="ga8b1ad947c470596674fa3364e16045c6"></a>
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<td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> realCoefA[8192]</td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of realCoefA array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
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pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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} </pre> </dd></dl>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga10717ee326bf50832ef1c25b85a23068">arm_rfft_init_f32()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="ga11e84d0ee257a547f749b37dd0078d36"></a>
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<div class="memitem">
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<table class="memname">
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<td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> realCoefAQ15[8192]</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation fixed-point realCoefAQ15 array in Q15 format: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
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pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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} </pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q15 format round(pATable[i] * pow(2, 15)) </dd></dl>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>.</p>
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</div>
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<a class="anchor" id="gaf1592a6cf0504675205074a43c3728a2"></a>
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<div class="memitem">
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<tr>
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<td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> realCoefAQ31[8192]</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation fixed-point realCoefAQ31 array in Q31 format: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
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pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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}</pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q31 format round(pATable[i] * pow(2, 31)) </dd></dl>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="gac52f98b52a1f03bfac8b57a67ba07397"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<td class="mlabels-left">
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<td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> realCoefB[8192]</td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of realCoefB array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
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pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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} </pre> </dd></dl>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga10717ee326bf50832ef1c25b85a23068">arm_rfft_init_f32()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="gac871666f018b70938b2b98017628cb97"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> <a class="el" href="arm__math_8h.html#a280a402ab28c399fcc4168f2ed631acb">ALIGN4</a> realCoefBQ15[8192]</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of real_CoefB array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
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pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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} </pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q15 format round(pBTable[i] * pow(2, 15)) </dd></dl>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="ga1eb5745728a61c3715755f5d69a4a960"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> realCoefBQ31[8192]</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section user"><dt></dt><dd>Generation of realCoefBQ31 array: </dd></dl>
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<dl class="section user"><dt></dt><dd>n = 4096 <pre>for (i = 0; i < n; i++)
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{
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pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
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pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
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} </pre> </dd></dl>
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<dl class="section user"><dt></dt><dd>Convert to fixed point Q31 format round(pBTable[i] * pow(2, 31)) </dd></dl>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>.</p>
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