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<!-- doxytag: class="arm_cfft_radix2_instance_q15" -->
<p>Instance structure for the Q15 CFFT/CIFFT function.
</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">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a874085647351dcf3f0de39d2b1d49744">fftLen</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__cfft__radix2__instance__q15.html#ab5c073286bdd2f6e2bf783ced36bf1de">ifftFlag</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__cfft__radix2__instance__q15.html#af8300c1f60caa21e6b44b9240ab5af19">bitReverseFlag</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__cfft__radix2__instance__q15.html#a3809dd15e7cbf1a054c728cfbbb0cc5a">pTwiddle</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint16_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#ab88afeff6493be3c8b5e4530efa82d51">pBitRevTable</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a6f2ab87fb4c568656e1f92f687b5c850">twidCoefModifier</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q15.html#a8722720c542cabd41df83fe88ef4f4cb">bitRevFactor</a></td></tr>
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<hr/><h2>Field Documentation</h2>
<a class="anchor" id="af8300c1f60caa21e6b44b9240ab5af19"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::bitReverseFlag" ref="af8300c1f60caa21e6b44b9240ab5af19" args="" -->
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<td class="memname">uint8_t <a class="el" href="structarm__cfft__radix2__instance__q15.html#af8300c1f60caa21e6b44b9240ab5af19">arm_cfft_radix2_instance_q15::bitReverseFlag</a></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___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>.</p>
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<a class="anchor" id="a8722720c542cabd41df83fe88ef4f4cb"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::bitRevFactor" ref="a8722720c542cabd41df83fe88ef4f4cb" args="" -->
<div class="memitem">
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<td class="memname">uint16_t <a class="el" href="structarm__cfft__radix2__instance__q15.html#a8722720c542cabd41df83fe88ef4f4cb">arm_cfft_radix2_instance_q15::bitRevFactor</a></td>
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<div class="memdoc">
<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>
<p>Referenced by <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="a874085647351dcf3f0de39d2b1d49744"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::fftLen" ref="a874085647351dcf3f0de39d2b1d49744" args="" -->
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<td class="memname">uint16_t <a class="el" href="structarm__cfft__radix2__instance__q15.html#a874085647351dcf3f0de39d2b1d49744">arm_cfft_radix2_instance_q15::fftLen</a></td>
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<div class="memdoc">
<p>length of the FFT. </p>
<p>Referenced by <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="ab5c073286bdd2f6e2bf783ced36bf1de"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::ifftFlag" ref="ab5c073286bdd2f6e2bf783ced36bf1de" args="" -->
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<td class="memname">uint8_t <a class="el" href="structarm__cfft__radix2__instance__q15.html#ab5c073286bdd2f6e2bf783ced36bf1de">arm_cfft_radix2_instance_q15::ifftFlag</a></td>
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<div class="memdoc">
<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>
<p>Referenced by <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="ab88afeff6493be3c8b5e4530efa82d51"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::pBitRevTable" ref="ab88afeff6493be3c8b5e4530efa82d51" args="" -->
<div class="memitem">
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<td class="memname">uint16_t* <a class="el" href="structarm__cfft__radix2__instance__q15.html#ab88afeff6493be3c8b5e4530efa82d51">arm_cfft_radix2_instance_q15::pBitRevTable</a></td>
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<div class="memdoc">
<p>points to the bit reversal table. </p>
<p>Referenced by <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
</div>
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<a class="anchor" id="a3809dd15e7cbf1a054c728cfbbb0cc5a"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::pTwiddle" ref="a3809dd15e7cbf1a054c728cfbbb0cc5a" 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__cfft__radix2__instance__q15.html#a3809dd15e7cbf1a054c728cfbbb0cc5a">arm_cfft_radix2_instance_q15::pTwiddle</a></td>
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<p>points to the Sin twiddle factor table. </p>
<p>Referenced by <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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<a class="anchor" id="a6f2ab87fb4c568656e1f92f687b5c850"></a><!-- doxytag: member="arm_cfft_radix2_instance_q15::twidCoefModifier" ref="a6f2ab87fb4c568656e1f92f687b5c850" args="" -->
<div class="memitem">
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<td class="memname">uint16_t <a class="el" href="structarm__cfft__radix2__instance__q15.html#a6f2ab87fb4c568656e1f92f687b5c850">arm_cfft_radix2_instance_q15::twidCoefModifier</a></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___radix2___c_f_f_t___c_i_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___radix2___c_f_f_t___c_i_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>.</p>
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