/* * Copyright (c) 1997-1999 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 Sun Nov 7 20:45:11 EST 1999 */ #include #include /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-backward 7 */ /* * This function contains 120 FP additions, 98 FP multiplications, * (or, 106 additions, 84 multiplications, 14 fused multiply/add), * 32 stack variables, and 56 memory accesses */ static const fftw_real K222520933 = FFTW_KONST(+0.222520933956314404288902564496794759466355569); static const fftw_real K900968867 = FFTW_KONST(+0.900968867902419126236102319507445051165919162); static const fftw_real K623489801 = FFTW_KONST(+0.623489801858733530525004884004239810632274731); static const fftw_real K781831482 = FFTW_KONST(+0.781831482468029808708444526674057750232334519); static const fftw_real K974927912 = FFTW_KONST(+0.974927912181823607018131682993931217232785801); static const fftw_real K433883739 = FFTW_KONST(+0.433883739117558120475768332848358754609990728); static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000); static const fftw_real K1_801937735 = FFTW_KONST(+1.801937735804838252472204639014890102331838324); static const fftw_real K445041867 = FFTW_KONST(+0.445041867912628808577805128993589518932711138); static const fftw_real K1_246979603 = FFTW_KONST(+1.246979603717467061050009768008479621264549462); static const fftw_real K867767478 = FFTW_KONST(+0.867767478235116240951536665696717509219981456); static const fftw_real K1_949855824 = FFTW_KONST(+1.949855824363647214036263365987862434465571601); static const fftw_real K1_563662964 = FFTW_KONST(+1.563662964936059617416889053348115500464669037); /* * Generator Id's : * $Id: exprdag.ml,v 1.41 1999/05/26 15:44:14 fftw Exp $ * $Id: fft.ml,v 1.43 1999/05/17 19:44:18 fftw Exp $ * $Id: to_c.ml,v 1.25 1999/10/26 21:41:32 stevenj Exp $ */ void fftw_hc2hc_backward_7(fftw_real *A, const fftw_complex *W, int iostride, int m, int dist) { int i; fftw_real *X; fftw_real *Y; X = A; Y = A + (7 * iostride); { fftw_real tmp84; fftw_real tmp88; fftw_real tmp86; fftw_real tmp76; fftw_real tmp79; fftw_real tmp77; fftw_real tmp78; fftw_real tmp80; fftw_real tmp87; fftw_real tmp85; fftw_real tmp81; fftw_real tmp83; fftw_real tmp82; ASSERT_ALIGNED_DOUBLE; tmp81 = Y[-2 * iostride]; tmp83 = Y[-iostride]; tmp82 = Y[-3 * iostride]; tmp84 = (K1_563662964 * tmp81) - (K1_949855824 * tmp82) - (K867767478 * tmp83); tmp88 = (K867767478 * tmp81) + (K1_563662964 * tmp82) - (K1_949855824 * tmp83); tmp86 = (K1_563662964 * tmp83) + (K1_949855824 * tmp81) + (K867767478 * tmp82); tmp76 = X[0]; tmp79 = X[3 * iostride]; tmp77 = X[iostride]; tmp78 = X[2 * iostride]; tmp80 = tmp76 + (K1_246979603 * tmp78) - (K445041867 * tmp79) - (K1_801937735 * tmp77); tmp87 = tmp76 + (K1_246979603 * tmp79) - (K1_801937735 * tmp78) - (K445041867 * tmp77); tmp85 = tmp76 + (K1_246979603 * tmp77) - (K1_801937735 * tmp79) - (K445041867 * tmp78); X[4 * iostride] = tmp80 - tmp84; X[3 * iostride] = tmp80 + tmp84; X[0] = tmp76 + (K2_000000000 * (tmp77 + tmp78 + tmp79)); X[2 * iostride] = tmp87 + tmp88; X[5 * iostride] = tmp87 - tmp88; X[iostride] = tmp85 - tmp86; X[6 * iostride] = tmp85 + tmp86; } X = X + dist; Y = Y - dist; for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 6) { fftw_real tmp14; fftw_real tmp23; fftw_real tmp17; fftw_real tmp20; fftw_real tmp39; fftw_real tmp53; fftw_real tmp66; fftw_real tmp69; fftw_real tmp57; fftw_real tmp42; fftw_real tmp24; fftw_real tmp33; fftw_real tmp27; fftw_real tmp30; fftw_real tmp46; fftw_real tmp58; fftw_real tmp70; fftw_real tmp65; fftw_real tmp54; fftw_real tmp35; ASSERT_ALIGNED_DOUBLE; { fftw_real tmp37; fftw_real tmp36; fftw_real tmp38; fftw_real tmp21; fftw_real tmp22; ASSERT_ALIGNED_DOUBLE; tmp14 = X[0]; tmp21 = X[3 * iostride]; tmp22 = Y[-4 * iostride]; tmp23 = tmp21 + tmp22; tmp37 = tmp21 - tmp22; { fftw_real tmp15; fftw_real tmp16; fftw_real tmp18; fftw_real tmp19; ASSERT_ALIGNED_DOUBLE; tmp15 = X[iostride]; tmp16 = Y[-6 * iostride]; tmp17 = tmp15 + tmp16; tmp36 = tmp15 - tmp16; tmp18 = X[2 * iostride]; tmp19 = Y[-5 * iostride]; tmp20 = tmp18 + tmp19; tmp38 = tmp18 - tmp19; } tmp39 = (K433883739 * tmp36) + (K974927912 * tmp37) - (K781831482 * tmp38); tmp53 = (K781831482 * tmp36) + (K974927912 * tmp38) + (K433883739 * tmp37); tmp66 = (K974927912 * tmp36) - (K781831482 * tmp37) - (K433883739 * tmp38); tmp69 = tmp14 + (K623489801 * tmp23) - (K900968867 * tmp20) - (K222520933 * tmp17); tmp57 = tmp14 + (K623489801 * tmp17) - (K900968867 * tmp23) - (K222520933 * tmp20); tmp42 = tmp14 + (K623489801 * tmp20) - (K222520933 * tmp23) - (K900968867 * tmp17); } { fftw_real tmp44; fftw_real tmp45; fftw_real tmp43; fftw_real tmp31; fftw_real tmp32; ASSERT_ALIGNED_DOUBLE; tmp24 = Y[0]; tmp31 = Y[-3 * iostride]; tmp32 = X[4 * iostride]; tmp33 = tmp31 - tmp32; tmp44 = tmp31 + tmp32; { fftw_real tmp25; fftw_real tmp26; fftw_real tmp28; fftw_real tmp29; ASSERT_ALIGNED_DOUBLE; tmp25 = Y[-iostride]; tmp26 = X[6 * iostride]; tmp27 = tmp25 - tmp26; tmp45 = tmp25 + tmp26; tmp28 = Y[-2 * iostride]; tmp29 = X[5 * iostride]; tmp30 = tmp28 - tmp29; tmp43 = tmp28 + tmp29; } tmp46 = (K781831482 * tmp43) - (K974927912 * tmp44) - (K433883739 * tmp45); tmp58 = (K781831482 * tmp45) + (K974927912 * tmp43) + (K433883739 * tmp44); tmp70 = (K433883739 * tmp43) + (K781831482 * tmp44) - (K974927912 * tmp45); tmp65 = tmp24 + (K623489801 * tmp33) - (K900968867 * tmp30) - (K222520933 * tmp27); tmp54 = tmp24 + (K623489801 * tmp27) - (K900968867 * tmp33) - (K222520933 * tmp30); tmp35 = tmp24 + (K623489801 * tmp30) - (K222520933 * tmp33) - (K900968867 * tmp27); } X[0] = tmp14 + tmp17 + tmp20 + tmp23; { fftw_real tmp61; fftw_real tmp63; fftw_real tmp60; fftw_real tmp62; ASSERT_ALIGNED_DOUBLE; tmp61 = tmp54 - tmp53; tmp63 = tmp57 + tmp58; tmp60 = c_re(W[5]); tmp62 = c_im(W[5]); Y[0] = (tmp60 * tmp61) - (tmp62 * tmp63); X[6 * iostride] = (tmp62 * tmp61) + (tmp60 * tmp63); } { fftw_real tmp73; fftw_real tmp75; fftw_real tmp72; fftw_real tmp74; ASSERT_ALIGNED_DOUBLE; tmp73 = tmp66 + tmp65; tmp75 = tmp69 + tmp70; tmp72 = c_re(W[1]); tmp74 = c_im(W[1]); Y[-4 * iostride] = (tmp72 * tmp73) - (tmp74 * tmp75); X[2 * iostride] = (tmp74 * tmp73) + (tmp72 * tmp75); } { fftw_real tmp67; fftw_real tmp71; fftw_real tmp64; fftw_real tmp68; ASSERT_ALIGNED_DOUBLE; tmp67 = tmp65 - tmp66; tmp71 = tmp69 - tmp70; tmp64 = c_re(W[4]); tmp68 = c_im(W[4]); Y[-iostride] = (tmp64 * tmp67) - (tmp68 * tmp71); X[5 * iostride] = (tmp68 * tmp67) + (tmp64 * tmp71); } Y[-6 * iostride] = tmp24 + tmp27 + tmp30 + tmp33; { fftw_real tmp40; fftw_real tmp47; fftw_real tmp34; fftw_real tmp41; ASSERT_ALIGNED_DOUBLE; tmp40 = tmp35 - tmp39; tmp47 = tmp42 - tmp46; tmp34 = c_re(W[3]); tmp41 = c_im(W[3]); Y[-2 * iostride] = (tmp34 * tmp40) - (tmp41 * tmp47); X[4 * iostride] = (tmp41 * tmp40) + (tmp34 * tmp47); } { fftw_real tmp49; fftw_real tmp51; fftw_real tmp48; fftw_real tmp50; ASSERT_ALIGNED_DOUBLE; tmp49 = tmp39 + tmp35; tmp51 = tmp42 + tmp46; tmp48 = c_re(W[2]); tmp50 = c_im(W[2]); Y[-3 * iostride] = (tmp48 * tmp49) - (tmp50 * tmp51); X[3 * iostride] = (tmp50 * tmp49) + (tmp48 * tmp51); } { fftw_real tmp55; fftw_real tmp59; fftw_real tmp52; fftw_real tmp56; ASSERT_ALIGNED_DOUBLE; tmp55 = tmp53 + tmp54; tmp59 = tmp57 - tmp58; tmp52 = c_re(W[0]); tmp56 = c_im(W[0]); Y[-5 * iostride] = (tmp52 * tmp55) - (tmp56 * tmp59); X[iostride] = (tmp56 * tmp55) + (tmp52 * tmp59); } } if (i == m) { fftw_real tmp9; fftw_real tmp13; fftw_real tmp11; fftw_real tmp1; fftw_real tmp4; fftw_real tmp2; fftw_real tmp3; fftw_real tmp5; fftw_real tmp12; fftw_real tmp10; fftw_real tmp6; fftw_real tmp8; fftw_real tmp7; ASSERT_ALIGNED_DOUBLE; tmp6 = Y[-2 * iostride]; tmp8 = Y[0]; tmp7 = Y[-iostride]; tmp9 = (K1_563662964 * tmp6) + (K1_949855824 * tmp7) + (K867767478 * tmp8); tmp13 = (K1_563662964 * tmp7) - (K1_949855824 * tmp8) - (K867767478 * tmp6); tmp11 = (K1_949855824 * tmp6) - (K1_563662964 * tmp8) - (K867767478 * tmp7); tmp1 = X[3 * iostride]; tmp4 = X[0]; tmp2 = X[2 * iostride]; tmp3 = X[iostride]; tmp5 = (K445041867 * tmp3) + (K1_801937735 * tmp4) - (K1_246979603 * tmp2) - tmp1; tmp12 = (K1_801937735 * tmp2) + (K445041867 * tmp4) - (K1_246979603 * tmp3) - tmp1; tmp10 = tmp1 + (K1_246979603 * tmp4) - (K1_801937735 * tmp3) - (K445041867 * tmp2); X[iostride] = tmp5 - tmp9; X[6 * iostride] = -(tmp5 + tmp9); X[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4)); X[4 * iostride] = tmp13 - tmp12; X[3 * iostride] = tmp12 + tmp13; X[5 * iostride] = tmp11 - tmp10; X[2 * iostride] = tmp10 + tmp11; } } static const int twiddle_order[] = {1, 2, 3, 4, 5, 6}; fftw_codelet_desc fftw_hc2hc_backward_7_desc = { "fftw_hc2hc_backward_7", (void (*)()) fftw_hc2hc_backward_7, 7, FFTW_BACKWARD, FFTW_HC2HC, 168, 6, twiddle_order, };