diff options
Diffstat (limited to 'src/fftw/ftw_8.c')
| -rw-r--r-- | src/fftw/ftw_8.c | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/src/fftw/ftw_8.c b/src/fftw/ftw_8.c new file mode 100644 index 0000000..a155bdd --- /dev/null +++ b/src/fftw/ftw_8.c @@ -0,0 +1,285 @@ +/* + * 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 02:07:38 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 8 */ + +/* + * This function contains 66 FP additions, 32 FP multiplications, + * (or, 52 additions, 18 multiplications, 14 fused multiply/add), + * 28 stack variables, and 32 memory accesses + */ +static const fftw_real K707106781 = +FFTW_KONST(+0.707106781186547524400844362104849039284835938); + +/* + * Generator Id's : + * $Id: ftw_8.c,v 1.1 2008/10/17 06:13:18 scuri Exp $ + * $Id: ftw_8.c,v 1.1 2008/10/17 06:13:18 scuri Exp $ + * $Id: ftw_8.c,v 1.1 2008/10/17 06:13:18 scuri Exp $ + */ + +void fftw_twiddle_8(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 + 7) { + fftw_real tmp7; + fftw_real tmp43; + fftw_real tmp71; + fftw_real tmp76; + fftw_real tmp41; + fftw_real tmp53; + fftw_real tmp56; + fftw_real tmp65; + fftw_real tmp18; + fftw_real tmp77; + fftw_real tmp46; + fftw_real tmp68; + fftw_real tmp30; + fftw_real tmp48; + fftw_real tmp51; + fftw_real tmp64; + ASSERT_ALIGNED_DOUBLE; + { + fftw_real tmp1; + fftw_real tmp70; + fftw_real tmp6; + fftw_real tmp69; + ASSERT_ALIGNED_DOUBLE; + tmp1 = c_re(inout[0]); + tmp70 = c_im(inout[0]); + { + fftw_real tmp3; + fftw_real tmp5; + fftw_real tmp2; + fftw_real tmp4; + ASSERT_ALIGNED_DOUBLE; + tmp3 = c_re(inout[4 * iostride]); + tmp5 = c_im(inout[4 * iostride]); + tmp2 = c_re(W[3]); + tmp4 = c_im(W[3]); + tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5); + tmp69 = (tmp4 * tmp3) + (tmp2 * tmp5); + } + tmp7 = tmp1 + tmp6; + tmp43 = tmp1 - tmp6; + tmp71 = tmp69 + tmp70; + tmp76 = tmp70 - tmp69; + } + { + fftw_real tmp35; + fftw_real tmp54; + fftw_real tmp40; + fftw_real tmp55; + ASSERT_ALIGNED_DOUBLE; + { + fftw_real tmp32; + fftw_real tmp34; + fftw_real tmp31; + fftw_real tmp33; + ASSERT_ALIGNED_DOUBLE; + tmp32 = c_re(inout[7 * iostride]); + tmp34 = c_im(inout[7 * iostride]); + tmp31 = c_re(W[6]); + tmp33 = c_im(W[6]); + tmp35 = (tmp31 * tmp32) - (tmp33 * tmp34); + tmp54 = (tmp33 * tmp32) + (tmp31 * tmp34); + } + { + fftw_real tmp37; + fftw_real tmp39; + fftw_real tmp36; + fftw_real tmp38; + ASSERT_ALIGNED_DOUBLE; + tmp37 = c_re(inout[3 * iostride]); + tmp39 = c_im(inout[3 * iostride]); + tmp36 = c_re(W[2]); + tmp38 = c_im(W[2]); + tmp40 = (tmp36 * tmp37) - (tmp38 * tmp39); + tmp55 = (tmp38 * tmp37) + (tmp36 * tmp39); + } + tmp41 = tmp35 + tmp40; + tmp53 = tmp35 - tmp40; + tmp56 = tmp54 - tmp55; + tmp65 = tmp54 + tmp55; + } + { + fftw_real tmp12; + fftw_real tmp44; + fftw_real tmp17; + fftw_real tmp45; + ASSERT_ALIGNED_DOUBLE; + { + fftw_real tmp9; + fftw_real tmp11; + fftw_real tmp8; + fftw_real tmp10; + ASSERT_ALIGNED_DOUBLE; + tmp9 = c_re(inout[2 * iostride]); + tmp11 = c_im(inout[2 * iostride]); + tmp8 = c_re(W[1]); + tmp10 = c_im(W[1]); + tmp12 = (tmp8 * tmp9) - (tmp10 * tmp11); + tmp44 = (tmp10 * tmp9) + (tmp8 * tmp11); + } + { + fftw_real tmp14; + fftw_real tmp16; + fftw_real tmp13; + fftw_real tmp15; + ASSERT_ALIGNED_DOUBLE; + tmp14 = c_re(inout[6 * iostride]); + tmp16 = c_im(inout[6 * iostride]); + tmp13 = c_re(W[5]); + tmp15 = c_im(W[5]); + tmp17 = (tmp13 * tmp14) - (tmp15 * tmp16); + tmp45 = (tmp15 * tmp14) + (tmp13 * tmp16); + } + tmp18 = tmp12 + tmp17; + tmp77 = tmp12 - tmp17; + tmp46 = tmp44 - tmp45; + tmp68 = tmp44 + tmp45; + } + { + fftw_real tmp24; + fftw_real tmp49; + fftw_real tmp29; + fftw_real tmp50; + ASSERT_ALIGNED_DOUBLE; + { + fftw_real tmp21; + fftw_real tmp23; + fftw_real tmp20; + fftw_real tmp22; + ASSERT_ALIGNED_DOUBLE; + tmp21 = c_re(inout[iostride]); + tmp23 = c_im(inout[iostride]); + tmp20 = c_re(W[0]); + tmp22 = c_im(W[0]); + tmp24 = (tmp20 * tmp21) - (tmp22 * tmp23); + tmp49 = (tmp22 * tmp21) + (tmp20 * tmp23); + } + { + fftw_real tmp26; + fftw_real tmp28; + fftw_real tmp25; + fftw_real tmp27; + ASSERT_ALIGNED_DOUBLE; + tmp26 = c_re(inout[5 * iostride]); + tmp28 = c_im(inout[5 * iostride]); + tmp25 = c_re(W[4]); + tmp27 = c_im(W[4]); + tmp29 = (tmp25 * tmp26) - (tmp27 * tmp28); + tmp50 = (tmp27 * tmp26) + (tmp25 * tmp28); + } + tmp30 = tmp24 + tmp29; + tmp48 = tmp24 - tmp29; + tmp51 = tmp49 - tmp50; + tmp64 = tmp49 + tmp50; + } + { + fftw_real tmp19; + fftw_real tmp42; + fftw_real tmp63; + fftw_real tmp66; + ASSERT_ALIGNED_DOUBLE; + tmp19 = tmp7 + tmp18; + tmp42 = tmp30 + tmp41; + c_re(inout[4 * iostride]) = tmp19 - tmp42; + c_re(inout[0]) = tmp19 + tmp42; + { + fftw_real tmp73; + fftw_real tmp74; + fftw_real tmp67; + fftw_real tmp72; + ASSERT_ALIGNED_DOUBLE; + tmp73 = tmp41 - tmp30; + tmp74 = tmp71 - tmp68; + c_im(inout[2 * iostride]) = tmp73 + tmp74; + c_im(inout[6 * iostride]) = tmp74 - tmp73; + tmp67 = tmp64 + tmp65; + tmp72 = tmp68 + tmp71; + c_im(inout[0]) = tmp67 + tmp72; + c_im(inout[4 * iostride]) = tmp72 - tmp67; + } + tmp63 = tmp7 - tmp18; + tmp66 = tmp64 - tmp65; + c_re(inout[6 * iostride]) = tmp63 - tmp66; + c_re(inout[2 * iostride]) = tmp63 + tmp66; + { + fftw_real tmp59; + fftw_real tmp78; + fftw_real tmp62; + fftw_real tmp75; + fftw_real tmp60; + fftw_real tmp61; + ASSERT_ALIGNED_DOUBLE; + tmp59 = tmp43 - tmp46; + tmp78 = tmp76 - tmp77; + tmp60 = tmp51 - tmp48; + tmp61 = tmp53 + tmp56; + tmp62 = K707106781 * (tmp60 - tmp61); + tmp75 = K707106781 * (tmp60 + tmp61); + c_re(inout[7 * iostride]) = tmp59 - tmp62; + c_re(inout[3 * iostride]) = tmp59 + tmp62; + c_im(inout[iostride]) = tmp75 + tmp78; + c_im(inout[5 * iostride]) = tmp78 - tmp75; + } + { + fftw_real tmp47; + fftw_real tmp80; + fftw_real tmp58; + fftw_real tmp79; + fftw_real tmp52; + fftw_real tmp57; + ASSERT_ALIGNED_DOUBLE; + tmp47 = tmp43 + tmp46; + tmp80 = tmp77 + tmp76; + tmp52 = tmp48 + tmp51; + tmp57 = tmp53 - tmp56; + tmp58 = K707106781 * (tmp52 + tmp57); + tmp79 = K707106781 * (tmp57 - tmp52); + c_re(inout[5 * iostride]) = tmp47 - tmp58; + c_re(inout[iostride]) = tmp47 + tmp58; + c_im(inout[3 * iostride]) = tmp79 + tmp80; + c_im(inout[7 * iostride]) = tmp80 - tmp79; + } + } + } +} + +static const int twiddle_order[] = { 1, 2, 3, 4, 5, 6, 7 }; +fftw_codelet_desc fftw_twiddle_8_desc = { + "fftw_twiddle_8", + (void (*)()) fftw_twiddle_8, + 8, + FFTW_FORWARD, + FFTW_TWIDDLE, + 176, + 7, + twiddle_order, +}; |