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name="MSearchResults" id="MSearchResults"> +</iframe> +</div> + +<div class="header"> + <div class="summary"> +<a href="#pub-attribs">Data Fields</a> </div> + <div class="headertitle"> +<div class="title">arm_cfft_radix2_instance_q31 Struct Reference</div> </div> +</div><!--header--> +<div class="contents"> + +<p>Instance structure for the Radix-2 Q31 CFFT/CIFFT 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:a960199f1373a192366878ef279eab00f"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a960199f1373a192366878ef279eab00f">fftLen</a></td></tr> +<tr class="separator:a960199f1373a192366878ef279eab00f"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a2607378ce64be16698bb8a3b1af8d3c8"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a2607378ce64be16698bb8a3b1af8d3c8">ifftFlag</a></td></tr> +<tr class="separator:a2607378ce64be16698bb8a3b1af8d3c8"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a6239b8d268285334e88c008c07d68616"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a6239b8d268285334e88c008c07d68616">bitReverseFlag</a></td></tr> +<tr class="separator:a6239b8d268285334e88c008c07d68616"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a1d5bbe9a991e133f81652a77a7985d23"><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__cfft__radix2__instance__q31.html#a1d5bbe9a991e133f81652a77a7985d23">pTwiddle</a></td></tr> +<tr class="separator:a1d5bbe9a991e133f81652a77a7985d23"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ada8e5264f4b22ff4c621817978994674"><td class="memItemLeft" align="right" valign="top">uint16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#ada8e5264f4b22ff4c621817978994674">pBitRevTable</a></td></tr> +<tr class="separator:ada8e5264f4b22ff4c621817978994674"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ae63ca9193322cd477970c1d2086407d1"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#ae63ca9193322cd477970c1d2086407d1">twidCoefModifier</a></td></tr> +<tr class="separator:ae63ca9193322cd477970c1d2086407d1"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a9d17a87263953fe3559a007512c9f3a4"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a9d17a87263953fe3559a007512c9f3a4">bitRevFactor</a></td></tr> +<tr class="separator:a9d17a87263953fe3559a007512c9f3a4"><td class="memSeparator" colspan="2"> </td></tr> +</table> +<h2 class="groupheader">Field Documentation</h2> +<a class="anchor" id="a6239b8d268285334e88c008c07d68616"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint8_t arm_cfft_radix2_instance_q31::bitReverseFlag</td> + </tr> + </table> +</div><div class="memdoc"> +<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="a9d17a87263953fe3559a007512c9f3a4"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t arm_cfft_radix2_instance_q31::bitRevFactor</td> + </tr> + </table> +</div><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___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="a960199f1373a192366878ef279eab00f"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t arm_cfft_radix2_instance_q31::fftLen</td> + </tr> + </table> +</div><div class="memdoc"> +<p>length of the FFT. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="a2607378ce64be16698bb8a3b1af8d3c8"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint8_t arm_cfft_radix2_instance_q31::ifftFlag</td> + </tr> + </table> +</div><div class="memdoc"> +<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="ada8e5264f4b22ff4c621817978994674"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t* arm_cfft_radix2_instance_q31::pBitRevTable</td> + </tr> + </table> +</div><div class="memdoc"> +<p>points to the bit reversal table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="a1d5bbe9a991e133f81652a77a7985d23"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_cfft_radix2_instance_q31::pTwiddle</td> + </tr> + </table> +</div><div class="memdoc"> +<p>points to the Twiddle factor table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="ae63ca9193322cd477970c1d2086407d1"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t arm_cfft_radix2_instance_q31::twidCoefModifier</td> + </tr> + </table> +</div><div class="memdoc"> +<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>.</p> + +</div> +</div> +</div><!-- contents --> +</div><!-- doc-content --> +<!-- start footer part --> +<div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> + <ul> + <li class="navelem"><a class="el" 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