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Diffstat (limited to 'src/fftw/ftw_5.c')
| -rw-r--r-- | src/fftw/ftw_5.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/fftw/ftw_5.c b/src/fftw/ftw_5.c new file mode 100644 index 0000000..157b3f7 --- /dev/null +++ b/src/fftw/ftw_5.c @@ -0,0 +1,197 @@ +/* + * Copyright (c) 1997-1999, 2003 Massachusetts Institute of Technology + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +/* This file was automatically generated --- DO NOT EDIT */ +/* Generated on Mon Mar 24 02:07:32 EST 2003 */ + +#include "fftw-int.h" +#include "fftw.h" + +/* Generated by: /homee/stevenj/cvs/fftw/gensrc/genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddle 5 */ + +/* + * This function contains 40 FP additions, 28 FP multiplications, + * (or, 26 additions, 14 multiplications, 14 fused multiply/add), + * 26 stack variables, and 20 memory accesses + */ +static const fftw_real K250000000 = +FFTW_KONST(+0.250000000000000000000000000000000000000000000); +static const fftw_real K559016994 = +FFTW_KONST(+0.559016994374947424102293417182819058860154590); +static const fftw_real K587785252 = +FFTW_KONST(+0.587785252292473129168705954639072768597652438); +static const fftw_real K951056516 = +FFTW_KONST(+0.951056516295153572116439333379382143405698634); + +/* + * Generator Id's : + * $Id: ftw_5.c,v 1.1 2008/10/17 06:13:18 scuri Exp $ + * $Id: ftw_5.c,v 1.1 2008/10/17 06:13:18 scuri Exp $ + * $Id: ftw_5.c,v 1.1 2008/10/17 06:13:18 scuri Exp $ + */ + +void fftw_twiddle_5(fftw_complex *A, const fftw_complex *W, int iostride, + int m, int dist) +{ + int i; + fftw_complex *inout; + inout = A; + for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 4) { + fftw_real tmp1; + fftw_real tmp40; + fftw_real tmp30; + fftw_real tmp33; + fftw_real tmp37; + fftw_real tmp38; + fftw_real tmp39; + fftw_real tmp45; + fftw_real tmp44; + fftw_real tmp12; + fftw_real tmp23; + fftw_real tmp24; + ASSERT_ALIGNED_DOUBLE; + tmp1 = c_re(inout[0]); + tmp40 = c_im(inout[0]); + { + fftw_real tmp6; + fftw_real tmp28; + fftw_real tmp22; + fftw_real tmp32; + fftw_real tmp11; + fftw_real tmp29; + fftw_real tmp17; + fftw_real tmp31; + ASSERT_ALIGNED_DOUBLE; + { + fftw_real tmp3; + fftw_real tmp5; + fftw_real tmp2; + fftw_real tmp4; + ASSERT_ALIGNED_DOUBLE; + tmp3 = c_re(inout[iostride]); + tmp5 = c_im(inout[iostride]); + tmp2 = c_re(W[0]); + tmp4 = c_im(W[0]); + tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5); + tmp28 = (tmp4 * tmp3) + (tmp2 * tmp5); + } + { + fftw_real tmp19; + fftw_real tmp21; + fftw_real tmp18; + fftw_real tmp20; + ASSERT_ALIGNED_DOUBLE; + tmp19 = c_re(inout[3 * iostride]); + tmp21 = c_im(inout[3 * iostride]); + tmp18 = c_re(W[2]); + tmp20 = c_im(W[2]); + tmp22 = (tmp18 * tmp19) - (tmp20 * tmp21); + tmp32 = (tmp20 * tmp19) + (tmp18 * tmp21); + } + { + fftw_real tmp8; + fftw_real tmp10; + fftw_real tmp7; + fftw_real tmp9; + ASSERT_ALIGNED_DOUBLE; + tmp8 = c_re(inout[4 * iostride]); + tmp10 = c_im(inout[4 * iostride]); + tmp7 = c_re(W[3]); + tmp9 = c_im(W[3]); + tmp11 = (tmp7 * tmp8) - (tmp9 * tmp10); + tmp29 = (tmp9 * tmp8) + (tmp7 * tmp10); + } + { + fftw_real tmp14; + fftw_real tmp16; + fftw_real tmp13; + fftw_real tmp15; + ASSERT_ALIGNED_DOUBLE; + tmp14 = c_re(inout[2 * iostride]); + tmp16 = c_im(inout[2 * iostride]); + tmp13 = c_re(W[1]); + tmp15 = c_im(W[1]); + tmp17 = (tmp13 * tmp14) - (tmp15 * tmp16); + tmp31 = (tmp15 * tmp14) + (tmp13 * tmp16); + } + tmp30 = tmp28 - tmp29; + tmp33 = tmp31 - tmp32; + tmp37 = tmp28 + tmp29; + tmp38 = tmp31 + tmp32; + tmp39 = tmp37 + tmp38; + tmp45 = tmp17 - tmp22; + tmp44 = tmp6 - tmp11; + tmp12 = tmp6 + tmp11; + tmp23 = tmp17 + tmp22; + tmp24 = tmp12 + tmp23; + } + c_re(inout[0]) = tmp1 + tmp24; + { + fftw_real tmp34; + fftw_real tmp36; + fftw_real tmp27; + fftw_real tmp35; + fftw_real tmp25; + fftw_real tmp26; + ASSERT_ALIGNED_DOUBLE; + tmp34 = (K951056516 * tmp30) + (K587785252 * tmp33); + tmp36 = (K951056516 * tmp33) - (K587785252 * tmp30); + tmp25 = K559016994 * (tmp12 - tmp23); + tmp26 = tmp1 - (K250000000 * tmp24); + tmp27 = tmp25 + tmp26; + tmp35 = tmp26 - tmp25; + c_re(inout[4 * iostride]) = tmp27 - tmp34; + c_re(inout[iostride]) = tmp27 + tmp34; + c_re(inout[2 * iostride]) = tmp35 - tmp36; + c_re(inout[3 * iostride]) = tmp35 + tmp36; + } + c_im(inout[0]) = tmp39 + tmp40; + { + fftw_real tmp46; + fftw_real tmp47; + fftw_real tmp43; + fftw_real tmp48; + fftw_real tmp41; + fftw_real tmp42; + ASSERT_ALIGNED_DOUBLE; + tmp46 = (K951056516 * tmp44) + (K587785252 * tmp45); + tmp47 = (K951056516 * tmp45) - (K587785252 * tmp44); + tmp41 = K559016994 * (tmp37 - tmp38); + tmp42 = tmp40 - (K250000000 * tmp39); + tmp43 = tmp41 + tmp42; + tmp48 = tmp42 - tmp41; + c_im(inout[iostride]) = tmp43 - tmp46; + c_im(inout[4 * iostride]) = tmp46 + tmp43; + c_im(inout[2 * iostride]) = tmp47 + tmp48; + c_im(inout[3 * iostride]) = tmp48 - tmp47; + } + } +} + +static const int twiddle_order[] = { 1, 2, 3, 4 }; +fftw_codelet_desc fftw_twiddle_5_desc = { + "fftw_twiddle_5", + (void (*)()) fftw_twiddle_5, + 5, + FFTW_FORWARD, + FFTW_TWIDDLE, + 110, + 4, + twiddle_order, +}; |