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<div class="title">arm_rfft_instance_q15 Struct Reference</div>  </div>
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<p>Instance structure for the Q15 RFFT/RIFFT function.  
</p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:aac5cf9e825917cbb14f439e56bb86ab3"><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 class="separator:aac5cf9e825917cbb14f439e56bb86ab3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8051ffe268c147e431e1bea7bb4c4258"><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>
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<tr class="memitem:a4c65cd40e0098ec2f5c0dc31488b9bc6"><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 class="separator:a4c65cd40e0098ec2f5c0dc31488b9bc6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afd444d05858c5f419980e94e8240d5c3"><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 class="separator:afd444d05858c5f419980e94e8240d5c3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:affbf2de522ac029432d98e8373c0ec53"><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 class="separator:affbf2de522ac029432d98e8373c0ec53"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a937d815022adc557b435ba8c6cd58b0d"><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>
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<tr class="memitem:a4329c15b056444746d37ff082a24d31a"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="structarm__cfft__instance__q15.html">arm_cfft_instance_q15</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__rfft__instance__q15.html#a4329c15b056444746d37ff082a24d31a">pCfft</a></td></tr>
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<h2 class="groupheader">Field Documentation</h2>
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          <td class="memname">uint8_t arm_rfft_instance_q15::bitReverseFlagR</td>
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<p>flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. </p>

<p>Referenced by <a class="el" href="group___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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          <td class="memname">uint32_t arm_rfft_instance_q15::fftLenReal</td>
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<p>length of the real FFT. </p>

<p>Referenced by <a class="el" href="group___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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          <td class="memname">uint8_t arm_rfft_instance_q15::ifftFlagR</td>
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<p>flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. </p>

<p>Referenced by <a class="el" href="group___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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          <td class="memname">const <a class="el" href="structarm__cfft__instance__q15.html">arm_cfft_instance_q15</a>* arm_rfft_instance_q15::pCfft</td>
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<p>points to the complex FFT instance. </p>

<p>Referenced by <a class="el" href="group___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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          <td class="memname"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a>* arm_rfft_instance_q15::pTwiddleAReal</td>
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<p>points to the real twiddle factor table. </p>

<p>Referenced by <a class="el" href="group___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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          <td class="memname"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a>* arm_rfft_instance_q15::pTwiddleBReal</td>
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<p>points to the imag twiddle factor table. </p>

<p>Referenced by <a class="el" href="group___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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<a class="anchor" id="afd444d05858c5f419980e94e8240d5c3"></a>
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          <td class="memname">uint32_t arm_rfft_instance_q15::twidCoefRModifier</td>
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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___real_f_f_t.html#ga053450cc600a55410ba5b5605e96245d">arm_rfft_init_q15()</a>, and <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>

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