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<div class="title">arm_cfft_radix2_instance_q15 Struct Reference</div> </div>
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<p>Instance structure for the Q15 CFFT/CIFFT function.
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
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Data Fields</h2></td></tr>
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<tr class="memitem:a874085647351dcf3f0de39d2b1d49744"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a874085647351dcf3f0de39d2b1d49744">fftLen</a></td></tr>
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<tr class="separator:a874085647351dcf3f0de39d2b1d49744"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab5c073286bdd2f6e2bf783ced36bf1de"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#ab5c073286bdd2f6e2bf783ced36bf1de">ifftFlag</a></td></tr>
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<tr class="separator:ab5c073286bdd2f6e2bf783ced36bf1de"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af8300c1f60caa21e6b44b9240ab5af19"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#af8300c1f60caa21e6b44b9240ab5af19">bitReverseFlag</a></td></tr>
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<tr class="separator:af8300c1f60caa21e6b44b9240ab5af19"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3809dd15e7cbf1a054c728cfbbb0cc5a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a3809dd15e7cbf1a054c728cfbbb0cc5a">pTwiddle</a></td></tr>
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<tr class="separator:a3809dd15e7cbf1a054c728cfbbb0cc5a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab88afeff6493be3c8b5e4530efa82d51"><td class="memItemLeft" align="right" valign="top">uint16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#ab88afeff6493be3c8b5e4530efa82d51">pBitRevTable</a></td></tr>
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<tr class="separator:ab88afeff6493be3c8b5e4530efa82d51"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6f2ab87fb4c568656e1f92f687b5c850"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a6f2ab87fb4c568656e1f92f687b5c850">twidCoefModifier</a></td></tr>
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<tr class="separator:a6f2ab87fb4c568656e1f92f687b5c850"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8722720c542cabd41df83fe88ef4f4cb"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a8722720c542cabd41df83fe88ef4f4cb">bitRevFactor</a></td></tr>
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<tr class="separator:a8722720c542cabd41df83fe88ef4f4cb"><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 class="anchor" id="af8300c1f60caa21e6b44b9240ab5af19"></a>
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<td class="memname">uint8_t arm_cfft_radix2_instance_q15::bitReverseFlag</td>
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<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p>
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<p>Referenced by <a class="el" href="group__ComplexFFT.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>.</p>
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<a class="anchor" id="a8722720c542cabd41df83fe88ef4f4cb"></a>
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<td class="memname">uint16_t arm_cfft_radix2_instance_q15::bitRevFactor</td>
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<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>
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<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#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="a874085647351dcf3f0de39d2b1d49744"></a>
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<td class="memname">uint16_t arm_cfft_radix2_instance_q15::fftLen</td>
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<p>length of the FFT. </p>
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<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#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="ab5c073286bdd2f6e2bf783ced36bf1de"></a>
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<td class="memname">uint8_t arm_cfft_radix2_instance_q15::ifftFlag</td>
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<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>
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<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#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="ab88afeff6493be3c8b5e4530efa82d51"></a>
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<td class="memname">uint16_t* arm_cfft_radix2_instance_q15::pBitRevTable</td>
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<p>points to the bit reversal table. </p>
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<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#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<td class="memname"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a>* arm_cfft_radix2_instance_q15::pTwiddle</td>
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</div><div class="memdoc">
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<p>points to the Sin twiddle factor table. </p>
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<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#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="a6f2ab87fb4c568656e1f92f687b5c850"></a>
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<td class="memname">uint16_t arm_cfft_radix2_instance_q15::twidCoefModifier</td>
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</div><div class="memdoc">
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<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p>
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<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#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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