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<h1>arm_rfft_instance_q15 Struct Reference</h1> </div>
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<p>Instance structure for the Q15 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__q15.html#aac5cf9e825917cbb14f439e56bb86ab3">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__q15.html#afef95bc722f5929d5e63ecba14fa3ca1">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__q15.html#a8051ffe268c147e431e1bea7bb4c4258">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__q15.html#a4c65cd40e0098ec2f5c0dc31488b9bc6">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__q15.html#afd444d05858c5f419980e94e8240d5c3">twidCoefRModifier</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q15.html#affbf2de522ac029432d98e8373c0ec53">pTwiddleAReal</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q15.html#a937d815022adc557b435ba8c6cd58b0d">pTwiddleBReal</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="structarm__cfft__radix4__instance__q15.html">arm_cfft_radix4_instance_q15</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q15.html#acd8f28f777f3417280212ce799ebef46">pCfft</a></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Instance structure for the Q15 RFFT/RIFFT function. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l02156">2156</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="aac5cf9e825917cbb14f439e56bb86ab3"></a><!-- doxytag: member="arm_rfft_instance_q15::fftLenReal" ref="aac5cf9e825917cbb14f439e56bb86ab3" args="" -->
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<td class="memname">uint32_t <a class="el" href="structarm__rfft__instance__q15.html#aac5cf9e825917cbb14f439e56bb86ab3">arm_rfft_instance_q15::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#l02158">2158</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="afef95bc722f5929d5e63ecba14fa3ca1"></a><!-- doxytag: member="arm_rfft_instance_q15::fftLenBy2" ref="afef95bc722f5929d5e63ecba14fa3ca1" args="" -->
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<td class="memname">uint32_t <a class="el" href="structarm__rfft__instance__q15.html#afef95bc722f5929d5e63ecba14fa3ca1">arm_rfft_instance_q15::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#l02159">2159</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="a8051ffe268c147e431e1bea7bb4c4258"></a><!-- doxytag: member="arm_rfft_instance_q15::ifftFlagR" ref="a8051ffe268c147e431e1bea7bb4c4258" args="" -->
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<td class="memname">uint8_t <a class="el" href="structarm__rfft__instance__q15.html#a8051ffe268c147e431e1bea7bb4c4258">arm_rfft_instance_q15::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#l02160">2160</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="a4c65cd40e0098ec2f5c0dc31488b9bc6"></a><!-- doxytag: member="arm_rfft_instance_q15::bitReverseFlagR" ref="a4c65cd40e0098ec2f5c0dc31488b9bc6" args="" -->
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<td class="memname">uint8_t <a class="el" href="structarm__rfft__instance__q15.html#a4c65cd40e0098ec2f5c0dc31488b9bc6">arm_rfft_instance_q15::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#l02161">2161</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="afd444d05858c5f419980e94e8240d5c3"></a><!-- doxytag: member="arm_rfft_instance_q15::twidCoefRModifier" ref="afd444d05858c5f419980e94e8240d5c3" args="" -->
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<td class="memname">uint32_t <a class="el" href="structarm__rfft__instance__q15.html#afd444d05858c5f419980e94e8240d5c3">arm_rfft_instance_q15::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#l02162">2162</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="affbf2de522ac029432d98e8373c0ec53"></a><!-- doxytag: member="arm_rfft_instance_q15::pTwiddleAReal" ref="affbf2de522ac029432d98e8373c0ec53" args="" -->
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<td class="memname"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a>* <a class="el" href="structarm__rfft__instance__q15.html#affbf2de522ac029432d98e8373c0ec53">arm_rfft_instance_q15::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#l02163">2163</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="a937d815022adc557b435ba8c6cd58b0d"></a><!-- doxytag: member="arm_rfft_instance_q15::pTwiddleBReal" ref="a937d815022adc557b435ba8c6cd58b0d" args="" -->
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<td class="memname"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a>* <a class="el" href="structarm__rfft__instance__q15.html#a937d815022adc557b435ba8c6cd58b0d">arm_rfft_instance_q15::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#l02164">2164</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="acd8f28f777f3417280212ce799ebef46"></a><!-- doxytag: member="arm_rfft_instance_q15::pCfft" ref="acd8f28f777f3417280212ce799ebef46" args="" -->
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<td class="memname"><a class="el" href="structarm__cfft__radix4__instance__q15.html">arm_cfft_radix4_instance_q15</a>* <a class="el" href="structarm__rfft__instance__q15.html#acd8f28f777f3417280212ce799ebef46">arm_rfft_instance_q15::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#l02165">2165</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>
</ul>
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