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<div class="title">arm_cfft_radix2_instance_q31 Struct Reference</div>  </div>
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<p>Instance structure for the Radix-2 Q31 CFFT/CIFFT function.  
</p>
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Data Fields</h2></td></tr>
<tr class="memitem:a960199f1373a192366878ef279eab00f"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a960199f1373a192366878ef279eab00f">fftLen</a></td></tr>
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<tr class="memitem:a2607378ce64be16698bb8a3b1af8d3c8"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a2607378ce64be16698bb8a3b1af8d3c8">ifftFlag</a></td></tr>
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<tr class="memitem:a6239b8d268285334e88c008c07d68616"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a6239b8d268285334e88c008c07d68616">bitReverseFlag</a></td></tr>
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<tr class="memitem:a1d5bbe9a991e133f81652a77a7985d23"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a1d5bbe9a991e133f81652a77a7985d23">pTwiddle</a></td></tr>
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<tr class="memitem:ada8e5264f4b22ff4c621817978994674"><td class="memItemLeft" align="right" valign="top">uint16_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#ada8e5264f4b22ff4c621817978994674">pBitRevTable</a></td></tr>
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<tr class="memitem:ae63ca9193322cd477970c1d2086407d1"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#ae63ca9193322cd477970c1d2086407d1">twidCoefModifier</a></td></tr>
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<tr class="memitem:a9d17a87263953fe3559a007512c9f3a4"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a9d17a87263953fe3559a007512c9f3a4">bitRevFactor</a></td></tr>
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<h2 class="groupheader">Field Documentation</h2>
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          <td class="memname">uint8_t arm_cfft_radix2_instance_q31::bitReverseFlag</td>
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<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>.</p>

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          <td class="memname">uint16_t arm_cfft_radix2_instance_q31::bitRevFactor</td>
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<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p>

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          <td class="memname">uint16_t arm_cfft_radix2_instance_q31::fftLen</td>
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<p>length of the FFT. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p>

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<a class="anchor" id="a2607378ce64be16698bb8a3b1af8d3c8"></a>
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          <td class="memname">uint8_t arm_cfft_radix2_instance_q31::ifftFlag</td>
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<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p>

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<a class="anchor" id="ada8e5264f4b22ff4c621817978994674"></a>
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          <td class="memname">uint16_t* arm_cfft_radix2_instance_q31::pBitRevTable</td>
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<p>points to the bit reversal table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p>

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          <td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_cfft_radix2_instance_q31::pTwiddle</td>
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<p>points to the Twiddle factor table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p>

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<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p>

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