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<h1>arm_rfft_instance_q31 Struct Reference</h1> </div>
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<p>Instance structure for the Q31 RFFT/RIFFT function.
<a href="#_details">More...</a></p>
<p><code>#include &lt;<a class="el" href="arm__math_8h_source.html">arm_math.h</a>&gt;</code></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#af777b0cadd5abaf064323692c2e6693b">fftLenReal</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a7d1a948bb8a23bf5419bb6f9ef43dd76">fftLenBy2</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#af5c2615e6cde15524df38fa57ea32d94">ifftFlagR</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a3cb90cdc928a88b0203917dcb3dc1b71">bitReverseFlagR</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#a6fc90252b579f7c29e01bd279334fc43">twidCoefRModifier</a></td></tr>
<tr><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__rfft__instance__q31.html#a2a0c944e66bab92fcbe19d1c29153250">pTwiddleAReal</a></td></tr>
<tr><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__rfft__instance__q31.html#ae5070be4c2e0327e618f5e1f4c5b9d80">pTwiddleBReal</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q31.html#ac6bf12707e1985818d161616adf27977">pCfft</a></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Instance structure for the Q31 RFFT/RIFFT function. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02172">2172</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
<hr/><h2>Field Documentation</h2>
<a class="anchor" id="af777b0cadd5abaf064323692c2e6693b"></a><!-- doxytag: member="arm_rfft_instance_q31::fftLenReal" ref="af777b0cadd5abaf064323692c2e6693b" args="" -->
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<td class="memname">uint32_t <a class="el" href="structarm__rfft__instance__q31.html#af777b0cadd5abaf064323692c2e6693b">arm_rfft_instance_q31::fftLenReal</a></td>
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<p>length of the real FFT. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02174">2174</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<a class="anchor" id="a7d1a948bb8a23bf5419bb6f9ef43dd76"></a><!-- doxytag: member="arm_rfft_instance_q31::fftLenBy2" ref="a7d1a948bb8a23bf5419bb6f9ef43dd76" args="" -->
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<td class="memname">uint32_t <a class="el" href="structarm__rfft__instance__q31.html#a7d1a948bb8a23bf5419bb6f9ef43dd76">arm_rfft_instance_q31::fftLenBy2</a></td>
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<p>length of the complex FFT. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02175">2175</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<a class="anchor" id="af5c2615e6cde15524df38fa57ea32d94"></a><!-- doxytag: member="arm_rfft_instance_q31::ifftFlagR" ref="af5c2615e6cde15524df38fa57ea32d94" args="" -->
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<td class="memname">uint8_t <a class="el" href="structarm__rfft__instance__q31.html#af5c2615e6cde15524df38fa57ea32d94">arm_rfft_instance_q31::ifftFlagR</a></td>
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<p>flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02176">2176</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<a class="anchor" id="a3cb90cdc928a88b0203917dcb3dc1b71"></a><!-- doxytag: member="arm_rfft_instance_q31::bitReverseFlagR" ref="a3cb90cdc928a88b0203917dcb3dc1b71" args="" -->
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<td class="memname">uint8_t <a class="el" href="structarm__rfft__instance__q31.html#a3cb90cdc928a88b0203917dcb3dc1b71">arm_rfft_instance_q31::bitReverseFlagR</a></td>
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<p>flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02177">2177</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<a class="anchor" id="a6fc90252b579f7c29e01bd279334fc43"></a><!-- doxytag: member="arm_rfft_instance_q31::twidCoefRModifier" ref="a6fc90252b579f7c29e01bd279334fc43" args="" -->
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<td class="memname">uint32_t <a class="el" href="structarm__rfft__instance__q31.html#a6fc90252b579f7c29e01bd279334fc43">arm_rfft_instance_q31::twidCoefRModifier</a></td>
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<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02178">2178</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<a class="anchor" id="a2a0c944e66bab92fcbe19d1c29153250"></a><!-- doxytag: member="arm_rfft_instance_q31::pTwiddleAReal" ref="a2a0c944e66bab92fcbe19d1c29153250" args="" -->
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<td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* <a class="el" href="structarm__rfft__instance__q31.html#a2a0c944e66bab92fcbe19d1c29153250">arm_rfft_instance_q31::pTwiddleAReal</a></td>
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<p>points to the real twiddle factor table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02179">2179</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* <a class="el" href="structarm__rfft__instance__q31.html#ae5070be4c2e0327e618f5e1f4c5b9d80">arm_rfft_instance_q31::pTwiddleBReal</a></td>
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<p>points to the imag twiddle factor table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02180">2180</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<a class="anchor" id="ac6bf12707e1985818d161616adf27977"></a><!-- doxytag: member="arm_rfft_instance_q31::pCfft" ref="ac6bf12707e1985818d161616adf27977" args="" -->
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<td class="memname"><a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a>* <a class="el" href="structarm__rfft__instance__q31.html#ac6bf12707e1985818d161616adf27977">arm_rfft_instance_q31::pCfft</a></td>
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<p>points to the complex FFT instance. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02181">2181</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="arm__math_8h_source.html">arm_math.h</a></li>
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