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<h1>gcp_fft_1d_r2.h File Reference</h1> </div>
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<div class="textblock"><code>#include <gcell/gc_job_manager.h></code><br/>
<code>#include <complex></code><br/>
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Include dependency graph for gcp_fft_1d_r2.h:</div>
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<p><a href="gcp__fft__1d__r2_8h_source.html">Go to the source code of this file.</a></p>
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Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classboost_1_1shared__ptr.html">gc_job_desc_sptr</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="gcp__fft__1d__r2_8h.html#aa183dec93bff6e55d81ab68aad393864">gcp_fft_1d_r2_submit</a> (<a class="el" href="classboost_1_1shared__ptr.html">gc_job_manager_sptr</a> mgr, unsigned int log2_fft_length, <a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> forward, <a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> shift, std::complex< float > *out, const std::complex< float > *in, const std::complex< float > *twiddle, const float *window)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Submit a job that computes the forward or inverse FFT. <a href="#aa183dec93bff6e55d81ab68aad393864"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="gcp__fft__1d__r2_8h.html#ad336f205db6bf15fdaa491bd57370299">gcp_fft_1d_r2_twiddle</a> (unsigned int log2_fft_length, std::complex< float > *W)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Compute twiddle factors. <a href="#ad336f205db6bf15fdaa491bd57370299"></a><br/></td></tr>
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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="aa183dec93bff6e55d81ab68aad393864"></a><!-- doxytag: member="gcp_fft_1d_r2.h::gcp_fft_1d_r2_submit" ref="aa183dec93bff6e55d81ab68aad393864" args="(gc_job_manager_sptr mgr, unsigned int log2_fft_length, bool forward, bool shift, std::complex< float > *out, const std::complex< float > *in, const std::complex< float > *twiddle, const float *window)" -->
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<td class="memname"><a class="el" href="classboost_1_1shared__ptr.html">gc_job_desc_sptr</a> gcp_fft_1d_r2_submit </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classboost_1_1shared__ptr.html">gc_job_manager_sptr</a> </td>
<td class="paramname"><em>mgr</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>log2_fft_length</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> </td>
<td class="paramname"><em>forward</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> </td>
<td class="paramname"><em>shift</em>, </td>
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<td class="paramtype">std::complex< float > * </td>
<td class="paramname"><em>out</em>, </td>
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<td></td>
<td class="paramtype">const std::complex< float > * </td>
<td class="paramname"><em>in</em>, </td>
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<td class="paramtype">const std::complex< float > * </td>
<td class="paramname"><em>twiddle</em>, </td>
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<td class="paramtype">const float * </td>
<td class="paramname"><em>window</em> </td>
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<td>)</td>
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<p>Submit a job that computes the forward or inverse FFT. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">mgr</td><td>is the job manager instance </td></tr>
<tr><td class="paramname">log2_fft_length</td><td>is the log2 of the fft_length (4 <= x <= 12). </td></tr>
<tr><td class="paramname">forward</td><td>is true to compute the forward transform, else the inverse. </td></tr>
<tr><td class="paramname">shift</td><td>indicates if an "fftshift" should be applied to the output data </td></tr>
<tr><td class="paramname">out</td><td>is the fft_length output from FFT (must be 16-byte aligned). </td></tr>
<tr><td class="paramname">in</td><td>is the fft_length input to FFT (must be 16-byte aligned). </td></tr>
<tr><td class="paramname">twiddle</td><td>is fft_length/4 twiddle factor input to FFT (must be 16-byte aligned). </td></tr>
<tr><td class="paramname">window</td><td>is the window to be applied to the input data. The window length must be either 0 or fft_length (must be 16-byte aligned).</td></tr>
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<p>Returns a shared_ptr to a job descriptor which should be passed to wait_job*. Throws an exception in the event of a problem. This uses the FFTW conventions for scaling. That is, neither the forward nor inverse are scaled by 1/fft_length. </p>
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<a class="anchor" id="ad336f205db6bf15fdaa491bd57370299"></a><!-- doxytag: member="gcp_fft_1d_r2.h::gcp_fft_1d_r2_twiddle" ref="ad336f205db6bf15fdaa491bd57370299" args="(unsigned int log2_fft_length, std::complex< float > *W)" -->
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<td class="memname">void gcp_fft_1d_r2_twiddle </td>
<td>(</td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>log2_fft_length</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::complex< float > * </td>
<td class="paramname"><em>W</em> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Compute twiddle factors. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">log2_fft_length</td><td>is the log2 of the fft_length. </td></tr>
<tr><td class="paramname">W</td><td>is fft_length/4 twiddle factor output (must be 16-byte aligned). </td></tr>
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