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<div class="title">arm_rfft_instance_q31 Struct Reference</div> </div>
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<p>Instance structure for the Q31 RFFT/RIFFT function.
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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:af777b0cadd5abaf064323692c2e6693b"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#af777b0cadd5abaf064323692c2e6693b">fftLenReal</a></td></tr>
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<tr class="separator:af777b0cadd5abaf064323692c2e6693b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af5c2615e6cde15524df38fa57ea32d94"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#af5c2615e6cde15524df38fa57ea32d94">ifftFlagR</a></td></tr>
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<tr class="separator:af5c2615e6cde15524df38fa57ea32d94"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3cb90cdc928a88b0203917dcb3dc1b71"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a3cb90cdc928a88b0203917dcb3dc1b71">bitReverseFlagR</a></td></tr>
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<tr class="separator:a3cb90cdc928a88b0203917dcb3dc1b71"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6fc90252b579f7c29e01bd279334fc43"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a6fc90252b579f7c29e01bd279334fc43">twidCoefRModifier</a></td></tr>
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<tr class="separator:a6fc90252b579f7c29e01bd279334fc43"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a2a0c944e66bab92fcbe19d1c29153250"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a2a0c944e66bab92fcbe19d1c29153250">pTwiddleAReal</a></td></tr>
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<tr class="separator:a2a0c944e66bab92fcbe19d1c29153250"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae5070be4c2e0327e618f5e1f4c5b9d80"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#ae5070be4c2e0327e618f5e1f4c5b9d80">pTwiddleBReal</a></td></tr>
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<tr class="separator:ae5070be4c2e0327e618f5e1f4c5b9d80"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8fe10d425b59e096c23aa4bb5caa1974"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="structarm__cfft__instance__q31.html">arm_cfft_instance_q31</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a8fe10d425b59e096c23aa4bb5caa1974">pCfft</a></td></tr>
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<tr class="separator:a8fe10d425b59e096c23aa4bb5caa1974"><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="a3cb90cdc928a88b0203917dcb3dc1b71"></a>
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<td class="memname">uint8_t arm_rfft_instance_q31::bitReverseFlagR</td>
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<p>flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. </p>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<a class="anchor" id="af777b0cadd5abaf064323692c2e6693b"></a>
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<td class="memname">uint32_t arm_rfft_instance_q31::fftLenReal</td>
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<p>length of the real FFT. </p>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<td class="memname">uint8_t arm_rfft_instance_q31::ifftFlagR</td>
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<p>flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. </p>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<td class="memname">const <a class="el" href="structarm__cfft__instance__q31.html">arm_cfft_instance_q31</a>* arm_rfft_instance_q31::pCfft</td>
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<p>points to the complex FFT instance. </p>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_rfft_instance_q31::pTwiddleAReal</td>
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</div><div class="memdoc">
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<p>points to the real twiddle factor table. </p>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_rfft_instance_q31::pTwiddleBReal</td>
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</div><div class="memdoc">
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<p>points to the imag twiddle factor table. </p>
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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<a class="anchor" id="a6fc90252b579f7c29e01bd279334fc43"></a>
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<td class="memname">uint32_t arm_rfft_instance_q31::twidCoefRModifier</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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<p>Referenced by <a class="el" href="group__RealFFT.html#ga5abde938abbe72e95c5bab080eb33c45">arm_rfft_init_q31()</a>, and <a class="el" href="group__RealFFT.html#gabaeab5646aeea9844e6d42ca8c73fe3a">arm_rfft_q31()</a>.</p>
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<li class="footer">Generated on Wed Aug 1 2018 17:12:22 for CMSIS-DSP by Arm Ltd. All rights reserved.
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