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312 lines
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312 lines
16 KiB
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle"><div class="title">arm_cfft_radix4_q31.c File Reference</div></div>
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</div><!--header-->
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<div class="contents">
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a053363aef7c6b41a61af7730c638c79b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q31_8c.html#a053363aef7c6b41a61af7730c638c79b">arm_radix4_butterfly_inverse_q31</a> (<a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoef, uint32_t twidCoefModifier)</td></tr>
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<tr class="memdesc:a053363aef7c6b41a61af7730c638c79b"><td class="mdescLeft"> </td><td class="mdescRight">Core function for the Q31 CIFFT butterfly process. <a href="arm__cfft__radix4__q31_8c.html#a053363aef7c6b41a61af7730c638c79b">More...</a><br /></td></tr>
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<tr class="separator:a053363aef7c6b41a61af7730c638c79b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af4d3481332146c3c703bf494baf23c45"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q31_8c.html#af4d3481332146c3c703bf494baf23c45">arm_radix4_butterfly_q31</a> (<a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoef, uint32_t twidCoefModifier)</td></tr>
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<tr class="memdesc:af4d3481332146c3c703bf494baf23c45"><td class="mdescLeft"> </td><td class="mdescRight">Core function for the Q31 CFFT butterfly process. <a href="arm__cfft__radix4__q31_8c.html#af4d3481332146c3c703bf494baf23c45">More...</a><br /></td></tr>
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<tr class="separator:af4d3481332146c3c703bf494baf23c45"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a82acdff1d26c7021c2a016a6e7e9eaf8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q31_8c.html#a82acdff1d26c7021c2a016a6e7e9eaf8">arm_bitreversal_q31</a> (<a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, uint16_t bitRevFactor, const uint16_t *pBitRevTab)</td></tr>
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<tr class="memdesc:a82acdff1d26c7021c2a016a6e7e9eaf8"><td class="mdescLeft"> </td><td class="mdescRight">In-place Q31 bit reversal function. <a href="arm__cfft__radix4__q31_8c.html#a82acdff1d26c7021c2a016a6e7e9eaf8">More...</a><br /></td></tr>
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<tr class="separator:a82acdff1d26c7021c2a016a6e7e9eaf8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gafde3ee1f58cf393b45a9073174fff548"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ComplexFFT.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31</a> (const <a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a> *S, <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc)</td></tr>
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<tr class="memdesc:gafde3ee1f58cf393b45a9073174fff548"><td class="mdescLeft"> </td><td class="mdescRight">Processing function for the Q31 CFFT/CIFFT. <a href="group__ComplexFFT.html#gafde3ee1f58cf393b45a9073174fff548">More...</a><br /></td></tr>
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<tr class="separator:gafde3ee1f58cf393b45a9073174fff548"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<h2 class="groupheader">Function Documentation</h2>
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<a id="a82acdff1d26c7021c2a016a6e7e9eaf8" name="a82acdff1d26c7021c2a016a6e7e9eaf8"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a82acdff1d26c7021c2a016a6e7e9eaf8">◆ </a></span>arm_bitreversal_q31()</h2>
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<div class="memitem">
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<table class="memname">
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<td class="memname">void arm_bitreversal_q31 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>fftLen</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint16_t </td>
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<td class="paramname"><em>bitRevFactor</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const uint16_t * </td>
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<td class="paramname"><em>pBitRevTab</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></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="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in,out]</td><td class="paramname">pSrc</td><td>points to in-place Q31 data buffer. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of FFT. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">bitRevFactor</td><td>bit reversal modifier that supports different size FFTs with the same bit reversal table </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pBitRevTab</td><td>points to bit reversal table </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="a053363aef7c6b41a61af7730c638c79b" name="a053363aef7c6b41a61af7730c638c79b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a053363aef7c6b41a61af7730c638c79b">◆ </a></span>arm_radix4_butterfly_inverse_q31()</h2>
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<div class="memitem">
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<table class="memname">
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<tr>
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<td class="memname">void arm_radix4_butterfly_inverse_q31 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>fftLen</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pCoef</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>twidCoefModifier</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></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="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in,out]</td><td class="paramname">pSrc</td><td>points to the in-place buffer of Q31 data type. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="af4d3481332146c3c703bf494baf23c45" name="af4d3481332146c3c703bf494baf23c45"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af4d3481332146c3c703bf494baf23c45">◆ </a></span>arm_radix4_butterfly_q31()</h2>
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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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<td class="memname">void arm_radix4_butterfly_q31 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>fftLen</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pCoef</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>twidCoefModifier</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p >end of ComplexFFT group </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in,out]</td><td class="paramname">pSrc</td><td>points to the in-place buffer of Q31 data type. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div><!-- contents -->
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