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<h1>fft_1d.h File Reference</h1> </div>
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<div class="textblock"><code>#include <spu_intrinsics.h></code><br/>
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Include dependency graph for fft_1d.h:</div>
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<p><a href="fft__1d_8h_source.html">Go to the source code of this file.</a></p>
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Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="fft__1d_8h.html#a67201f8863c0bd71426c8a0d87aef48a">BIT_SWAP</a>(_i, _pat)   spu_extract(spu_gather(spu_shuffle(spu_maskb(_i), _pat, _pat)), 0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="fft__1d_8h.html#a7e49143d089320690fd74371ce28048b">MAX_FFT_1D_SIZE</a>   8192</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="fft__1d_8h.html#a00ce1546c572fa40f917142388f0c22a">INV_SQRT_2</a>   0.7071067811865</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="fft__1d_8h.html#a067eee2bb92825cd01fdb5c4df044c08">FFT_1D_BUTTERFLY</a>(_P_re, _P_im, _Q_re, _Q_im, _p_re, _p_im, _q_re, _q_im, _W_re, _W_im)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="fft__1d_8h.html#a5eaef4eb58f6867aec999d5d76355e39">FFT_1D_BUTTERFLY_HI</a>(_P_re, _P_im, _Q_re, _Q_im, _p_re, _p_im, _q_re, _q_im, _W_re, _W_im)</td></tr>
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<hr/><h2>Define Documentation</h2>
<a class="anchor" id="a67201f8863c0bd71426c8a0d87aef48a"></a><!-- doxytag: member="fft_1d.h::BIT_SWAP" ref="a67201f8863c0bd71426c8a0d87aef48a" args="(_i, _pat)" -->
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<td class="memname">#define BIT_SWAP</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">_i, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_pat </td>
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<td>)</td>
<td></td><td>   spu_extract(spu_gather(spu_shuffle(spu_maskb(_i), _pat, _pat)), 0)</td>
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<div class="memdoc">
<p>Referenced by <a class="el" href="fft__1d__r2_8h.html#adb7e8a704b1ac7da3a8f6408be60979b">_fft_1d_r2()</a>.</p>
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<a class="anchor" id="a067eee2bb92825cd01fdb5c4df044c08"></a><!-- doxytag: member="fft_1d.h::FFT_1D_BUTTERFLY" ref="a067eee2bb92825cd01fdb5c4df044c08" args="(_P_re, _P_im, _Q_re, _Q_im, _p_re, _p_im, _q_re, _q_im, _W_re, _W_im)" -->
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<td class="memname">#define FFT_1D_BUTTERFLY</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">_P_re, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_P_im, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_Q_re, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_Q_im, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_p_re, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_p_im, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_q_re, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_q_im, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_W_re, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_W_im </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><pre class="fragment">{ \
vector <span class="keywordtype">float</span> _qw_re, _qw_im; \
\
_qw_re = spu_msub(_q_re, _W_re, spu_mul(_q_im, _W_im)); \
_qw_im = spu_madd(_q_re, _W_im, spu_mul(_q_im, _W_re)); \
_P_re = spu_add(_p_re, _qw_re); \
_P_im = spu_add(_p_im, _qw_im); \
_Q_re = spu_sub(_p_re, _qw_re); \
_Q_im = spu_sub(_p_im, _qw_im); \
}
</pre></div>
<p>Referenced by <a class="el" href="fft__1d__r2_8h.html#adb7e8a704b1ac7da3a8f6408be60979b">_fft_1d_r2()</a>.</p>
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<a class="anchor" id="a5eaef4eb58f6867aec999d5d76355e39"></a><!-- doxytag: member="fft_1d.h::FFT_1D_BUTTERFLY_HI" ref="a5eaef4eb58f6867aec999d5d76355e39" args="(_P_re, _P_im, _Q_re, _Q_im, _p_re, _p_im, _q_re, _q_im, _W_re, _W_im)" -->
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<td class="memname">#define FFT_1D_BUTTERFLY_HI</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">_P_re, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_P_im, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_Q_re, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_Q_im, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_p_re, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_p_im, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_q_re, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_q_im, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_W_re, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">_W_im </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<div class="memdoc">
<b>Value:</b><div class="fragment"><pre class="fragment">{ \
vector <span class="keywordtype">float</span> _qw_re, _qw_im; \
\
_qw_re = spu_madd(_q_re, _W_im, spu_mul(_q_im, _W_re)); \
_qw_im = spu_msub(_q_im, _W_im, spu_mul(_q_re, _W_re)); \
_P_re = spu_add(_p_re, _qw_re); \
_P_im = spu_add(_p_im, _qw_im); \
_Q_re = spu_sub(_p_re, _qw_re); \
_Q_im = spu_sub(_p_im, _qw_im); \
}
</pre></div>
<p>Referenced by <a class="el" href="fft__1d__r2_8h.html#adb7e8a704b1ac7da3a8f6408be60979b">_fft_1d_r2()</a>.</p>
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<a class="anchor" id="a00ce1546c572fa40f917142388f0c22a"></a><!-- doxytag: member="fft_1d.h::INV_SQRT_2" ref="a00ce1546c572fa40f917142388f0c22a" args="" -->
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<td class="memname">#define INV_SQRT_2   0.7071067811865</td>
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</div>
<div class="memdoc">
<p>Referenced by <a class="el" href="fft__1d__r2_8h.html#adb7e8a704b1ac7da3a8f6408be60979b">_fft_1d_r2()</a>.</p>
</div>
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<a class="anchor" id="a7e49143d089320690fd74371ce28048b"></a><!-- doxytag: member="fft_1d.h::MAX_FFT_1D_SIZE" ref="a7e49143d089320690fd74371ce28048b" args="" -->
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<td class="memname">#define MAX_FFT_1D_SIZE   8192</td>
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<div class="memdoc">
<p>Referenced by <a class="el" href="fft__1d__r2_8h.html#adb7e8a704b1ac7da3a8f6408be60979b">_fft_1d_r2()</a>.</p>
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