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<p>Instance structure for the Q31 CFFT/CIFFT function.
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</p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-attribs" name="pub-attribs"></a>
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Data Fields</h2></td></tr>
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<tr class="memitem:ab8db3bbe7c61e6bb8ca2a55e3446e11a"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#ab8db3bbe7c61e6bb8ca2a55e3446e11a">fftLen</a></td></tr>
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<tr class="separator:ab8db3bbe7c61e6bb8ca2a55e3446e11a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad6ca6e223f986ebfd94c5ee1e410aa73"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#ad6ca6e223f986ebfd94c5ee1e410aa73">ifftFlag</a></td></tr>
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<tr class="separator:ad6ca6e223f986ebfd94c5ee1e410aa73"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a09a221a818c6d0e064557a99e2fe9a8b"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a09a221a818c6d0e064557a99e2fe9a8b">bitReverseFlag</a></td></tr>
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<tr class="separator:a09a221a818c6d0e064557a99e2fe9a8b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a9760c603af5d85652496dbffd63a8a2e"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a9760c603af5d85652496dbffd63a8a2e">pTwiddle</a></td></tr>
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<tr class="separator:a9760c603af5d85652496dbffd63a8a2e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3b229432d381b0a511a9cdbe3aa74e78"><td class="memItemLeft" align="right" valign="top">const uint16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a3b229432d381b0a511a9cdbe3aa74e78">pBitRevTable</a></td></tr>
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<tr class="separator:a3b229432d381b0a511a9cdbe3aa74e78"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afe772e5b5001c9d8e85032115a8df5bf"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#afe772e5b5001c9d8e85032115a8df5bf">twidCoefModifier</a></td></tr>
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<tr class="separator:afe772e5b5001c9d8e85032115a8df5bf"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a33386d95319dc3ee7097b3a8e52e01ec"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a33386d95319dc3ee7097b3a8e52e01ec">bitRevFactor</a></td></tr>
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<tr class="separator:a33386d95319dc3ee7097b3a8e52e01ec"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<h2 class="groupheader">Field Documentation</h2>
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<a id="a09a221a818c6d0e064557a99e2fe9a8b" name="a09a221a818c6d0e064557a99e2fe9a8b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a09a221a818c6d0e064557a99e2fe9a8b">◆ </a></span>bitReverseFlag</h2>
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<td class="memname">uint8_t bitReverseFlag</td>
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</div><div class="memdoc">
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<p >flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p>
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</div>
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<a id="a33386d95319dc3ee7097b3a8e52e01ec" name="a33386d95319dc3ee7097b3a8e52e01ec"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a33386d95319dc3ee7097b3a8e52e01ec">◆ </a></span>bitRevFactor</h2>
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<td class="memname">uint16_t bitRevFactor</td>
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</div><div class="memdoc">
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<p >bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>
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</div>
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</div>
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<a id="ab8db3bbe7c61e6bb8ca2a55e3446e11a" name="ab8db3bbe7c61e6bb8ca2a55e3446e11a"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab8db3bbe7c61e6bb8ca2a55e3446e11a">◆ </a></span>fftLen</h2>
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<td class="memname">uint16_t fftLen</td>
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</div><div class="memdoc">
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<p >length of the FFT. </p>
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</div>
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<a id="ad6ca6e223f986ebfd94c5ee1e410aa73" name="ad6ca6e223f986ebfd94c5ee1e410aa73"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad6ca6e223f986ebfd94c5ee1e410aa73">◆ </a></span>ifftFlag</h2>
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<td class="memname">uint8_t ifftFlag</td>
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</div><div class="memdoc">
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<p >flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>
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</div>
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</div>
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<a id="a3b229432d381b0a511a9cdbe3aa74e78" name="a3b229432d381b0a511a9cdbe3aa74e78"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a3b229432d381b0a511a9cdbe3aa74e78">◆ </a></span>pBitRevTable</h2>
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<td class="memname">const uint16_t* pBitRevTable</td>
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</div><div class="memdoc">
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<p >points to the bit reversal table. </p>
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<a id="a9760c603af5d85652496dbffd63a8a2e" name="a9760c603af5d85652496dbffd63a8a2e"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a9760c603af5d85652496dbffd63a8a2e">◆ </a></span>pTwiddle</h2>
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<td class="memname">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* pTwiddle</td>
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</div><div class="memdoc">
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<p >points to the twiddle factor table. </p>
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</div>
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<a id="afe772e5b5001c9d8e85032115a8df5bf" name="afe772e5b5001c9d8e85032115a8df5bf"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#afe772e5b5001c9d8e85032115a8df5bf">◆ </a></span>twidCoefModifier</h2>
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<td class="memname">uint16_t twidCoefModifier</td>
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<p >twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p>
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