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51 <a href="#func-members">Functions</a> </div>
52 <div class="headertitle">
53 <h1>arm_cfft_radix4_q15.c File Reference</h1> </div>
55 <div class="contents">
56 <code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/>
58 <p><a href="arm__cfft__radix4__q15_8c_source.html">Go to the source code of this file.</a></p>
59 <table class="memberdecls">
60 <tr><td colspan="2"><h2><a name="func-members"></a>
61 Functions</h2></td></tr>
62 <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15</a> (const <a class="el" href="structarm__cfft__radix4__instance__q15.html">arm_cfft_radix4_instance_q15</a> *S, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc)</td></tr>
63 <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q15_8c.html#a2d01d2045f280c32036da97d33c52440">arm_radix4_butterfly_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc16, uint32_t fftLen, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCoef16, uint32_t twidCoefModifier)</td></tr>
64 <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q15_8c.html#aad04e8439d17dab5617bf1be268bb391">arm_radix4_butterfly_inverse_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc16, uint32_t fftLen, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCoef16, uint32_t twidCoefModifier)</td></tr>
65 <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q15_8c.html#a12a07b49948c354172ae07358309a4a5">arm_bitreversal_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc16, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTab)</td></tr>
67 <hr/><h2>Function Documentation</h2>
68 <a class="anchor" id="a2d01d2045f280c32036da97d33c52440"></a><!-- doxytag: member="arm_cfft_radix4_q15.c::arm_radix4_butterfly_q15" ref="a2d01d2045f280c32036da97d33c52440" args="(q15_t *pSrc16, uint32_t fftLen, q15_t *pCoef16, uint32_t twidCoefModifier)" -->
70 <div class="memproto">
71 <table class="memname">
73 <td class="memname">void arm_radix4_butterfly_q15 </td>
75 <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
76 <td class="paramname"> <em>pSrc16</em>, </td>
79 <td class="paramkey"></td>
81 <td class="paramtype">uint32_t </td>
82 <td class="paramname"> <em>fftLen</em>, </td>
85 <td class="paramkey"></td>
87 <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
88 <td class="paramname"> <em>pCoef16</em>, </td>
91 <td class="paramkey"></td>
93 <td class="paramtype">uint32_t </td>
94 <td class="paramname"> <em>twidCoefModifier</em> </td>
105 <p>Core function for the Q15 CFFT butterfly process. </p>
106 <p>end of CFFT_CIFFT group </p>
107 <dl><dt><b>Parameters:</b></dt><dd>
108 <table class="params">
109 <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc16</td><td>points to the in-place buffer of Q15 data type. </td></tr>
110 <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
111 <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef16</td><td>points to twiddle coefficient buffer. </td></tr>
112 <tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </td></tr>
116 <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
118 <p>Definition at line <a class="el" href="arm__cfft__radix4__q15_8c_source.html#l00138">138</a> of file <a class="el" href="arm__cfft__radix4__q15_8c_source.html">arm_cfft_radix4_q15.c</a>.</p>
122 <a class="anchor" id="aad04e8439d17dab5617bf1be268bb391"></a><!-- doxytag: member="arm_cfft_radix4_q15.c::arm_radix4_butterfly_inverse_q15" ref="aad04e8439d17dab5617bf1be268bb391" args="(q15_t *pSrc16, uint32_t fftLen, q15_t *pCoef16, uint32_t twidCoefModifier)" -->
123 <div class="memitem">
124 <div class="memproto">
125 <table class="memname">
127 <td class="memname">void arm_radix4_butterfly_inverse_q15 </td>
129 <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
130 <td class="paramname"> <em>pSrc16</em>, </td>
133 <td class="paramkey"></td>
135 <td class="paramtype">uint32_t </td>
136 <td class="paramname"> <em>fftLen</em>, </td>
139 <td class="paramkey"></td>
141 <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
142 <td class="paramname"> <em>pCoef16</em>, </td>
145 <td class="paramkey"></td>
147 <td class="paramtype">uint32_t </td>
148 <td class="paramname"> <em>twidCoefModifier</em> </td>
159 <p>Core function for the Q15 CIFFT butterfly process. </p>
160 <dl><dt><b>Parameters:</b></dt><dd>
161 <table class="params">
162 <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc16</td><td>points to the in-place buffer of Q15 data type. </td></tr>
163 <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
164 <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef16</td><td>points to twiddle coefficient buffer. </td></tr>
165 <tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </td></tr>
169 <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
171 <p>Definition at line <a class="el" href="arm__cfft__radix4__q15_8c_source.html#l01053">1053</a> of file <a class="el" href="arm__cfft__radix4__q15_8c_source.html">arm_cfft_radix4_q15.c</a>.</p>
175 <a class="anchor" id="a12a07b49948c354172ae07358309a4a5"></a><!-- doxytag: member="arm_cfft_radix4_q15.c::arm_bitreversal_q15" ref="a12a07b49948c354172ae07358309a4a5" args="(q15_t *pSrc16, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTab)" -->
176 <div class="memitem">
177 <div class="memproto">
178 <table class="memname">
180 <td class="memname">void arm_bitreversal_q15 </td>
182 <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
183 <td class="paramname"> <em>pSrc</em>, </td>
186 <td class="paramkey"></td>
188 <td class="paramtype">uint32_t </td>
189 <td class="paramname"> <em>fftLen</em>, </td>
192 <td class="paramkey"></td>
194 <td class="paramtype">uint16_t </td>
195 <td class="paramname"> <em>bitRevFactor</em>, </td>
198 <td class="paramkey"></td>
200 <td class="paramtype">uint16_t * </td>
201 <td class="paramname"> <em>pBitRevTab</em> </td>
212 <p>In-place bit reversal function. </p>
213 <dl><dt><b>Parameters:</b></dt><dd>
214 <table class="params">
215 <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of Q15 data type. </td></tr>
216 <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
217 <tr><td class="paramdir">[in]</td><td class="paramname">bitRevFactor</td><td>bit reversal modifier that supports different size FFTs with the same bit reversal table </td></tr>
218 <tr><td class="paramdir">[in]</td><td class="paramname">*pBitRevTab</td><td>points to bit reversal table. </td></tr>
222 <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
224 <p>Definition at line <a class="el" href="arm__cfft__radix4__q15_8c_source.html#l01906">1906</a> of file <a class="el" href="arm__cfft__radix4__q15_8c_source.html">arm_cfft_radix4_q15.c</a>.</p>
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