/* * 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 02:06:09 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 -real2hc 16 */ /* * This function contains 58 FP additions, 12 FP multiplications, * (or, 54 additions, 8 multiplications, 4 fused multiply/add), * 30 stack variables, and 32 memory accesses */ static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938); static const fftw_real K923879532 = FFTW_KONST(+0.923879532511286756128183189396788286822416626); static const fftw_real K382683432 = FFTW_KONST(+0.382683432365089771728459984030398866761344562); /* * Generator Id's : * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $ * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $ * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $ */ void fftw_real2hc_16(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride) { fftw_real tmp3; fftw_real tmp6; fftw_real tmp7; fftw_real tmp35; fftw_real tmp18; fftw_real tmp33; fftw_real tmp40; fftw_real tmp48; fftw_real tmp56; fftw_real tmp10; fftw_real tmp13; fftw_real tmp14; fftw_real tmp36; fftw_real tmp17; fftw_real tmp26; fftw_real tmp41; fftw_real tmp51; fftw_real tmp57; fftw_real tmp16; fftw_real tmp15; fftw_real tmp43; fftw_real tmp44; ASSERT_ALIGNED_DOUBLE; { fftw_real tmp1; fftw_real tmp2; fftw_real tmp4; fftw_real tmp5; ASSERT_ALIGNED_DOUBLE; tmp1 = input[0]; tmp2 = input[8 * istride]; tmp3 = tmp1 + tmp2; tmp4 = input[4 * istride]; tmp5 = input[12 * istride]; tmp6 = tmp4 + tmp5; tmp7 = tmp3 + tmp6; tmp35 = tmp1 - tmp2; tmp18 = tmp4 - tmp5; } { fftw_real tmp29; fftw_real tmp46; fftw_real tmp32; fftw_real tmp47; ASSERT_ALIGNED_DOUBLE; { fftw_real tmp27; fftw_real tmp28; fftw_real tmp30; fftw_real tmp31; ASSERT_ALIGNED_DOUBLE; tmp27 = input[istride]; tmp28 = input[9 * istride]; tmp29 = tmp27 - tmp28; tmp46 = tmp27 + tmp28; tmp30 = input[5 * istride]; tmp31 = input[13 * istride]; tmp32 = tmp30 - tmp31; tmp47 = tmp30 + tmp31; } tmp33 = (K382683432 * tmp29) + (K923879532 * tmp32); tmp40 = (K923879532 * tmp29) - (K382683432 * tmp32); tmp48 = tmp46 - tmp47; tmp56 = tmp46 + tmp47; } { fftw_real tmp8; fftw_real tmp9; fftw_real tmp11; fftw_real tmp12; ASSERT_ALIGNED_DOUBLE; tmp8 = input[2 * istride]; tmp9 = input[10 * istride]; tmp10 = tmp8 + tmp9; tmp16 = tmp8 - tmp9; tmp11 = input[14 * istride]; tmp12 = input[6 * istride]; tmp13 = tmp11 + tmp12; tmp15 = tmp11 - tmp12; } tmp14 = tmp10 + tmp13; tmp36 = K707106781 * (tmp16 + tmp15); tmp17 = K707106781 * (tmp15 - tmp16); { fftw_real tmp22; fftw_real tmp49; fftw_real tmp25; fftw_real tmp50; ASSERT_ALIGNED_DOUBLE; { fftw_real tmp20; fftw_real tmp21; fftw_real tmp23; fftw_real tmp24; ASSERT_ALIGNED_DOUBLE; tmp20 = input[15 * istride]; tmp21 = input[7 * istride]; tmp22 = tmp20 - tmp21; tmp49 = tmp20 + tmp21; tmp23 = input[3 * istride]; tmp24 = input[11 * istride]; tmp25 = tmp23 - tmp24; tmp50 = tmp23 + tmp24; } tmp26 = (K382683432 * tmp22) - (K923879532 * tmp25); tmp41 = (K923879532 * tmp22) + (K382683432 * tmp25); tmp51 = tmp49 - tmp50; tmp57 = tmp49 + tmp50; } { fftw_real tmp55; fftw_real tmp58; fftw_real tmp53; fftw_real tmp54; ASSERT_ALIGNED_DOUBLE; real_output[4 * real_ostride] = tmp7 - tmp14; tmp55 = tmp7 + tmp14; tmp58 = tmp56 + tmp57; real_output[8 * real_ostride] = tmp55 - tmp58; real_output[0] = tmp55 + tmp58; imag_output[4 * imag_ostride] = tmp57 - tmp56; tmp53 = tmp13 - tmp10; tmp54 = K707106781 * (tmp51 - tmp48); imag_output[2 * imag_ostride] = tmp53 + tmp54; imag_output[6 * imag_ostride] = tmp54 - tmp53; } { fftw_real tmp45; fftw_real tmp52; fftw_real tmp39; fftw_real tmp42; ASSERT_ALIGNED_DOUBLE; tmp45 = tmp3 - tmp6; tmp52 = K707106781 * (tmp48 + tmp51); real_output[6 * real_ostride] = tmp45 - tmp52; real_output[2 * real_ostride] = tmp45 + tmp52; tmp39 = tmp35 + tmp36; tmp42 = tmp40 + tmp41; real_output[7 * real_ostride] = tmp39 - tmp42; real_output[real_ostride] = tmp39 + tmp42; } tmp43 = tmp18 + tmp17; tmp44 = tmp41 - tmp40; imag_output[3 * imag_ostride] = tmp43 + tmp44; imag_output[5 * imag_ostride] = tmp44 - tmp43; { fftw_real tmp19; fftw_real tmp34; fftw_real tmp37; fftw_real tmp38; ASSERT_ALIGNED_DOUBLE; tmp19 = tmp17 - tmp18; tmp34 = tmp26 - tmp33; imag_output[imag_ostride] = tmp19 + tmp34; imag_output[7 * imag_ostride] = tmp34 - tmp19; tmp37 = tmp35 - tmp36; tmp38 = tmp33 + tmp26; real_output[5 * real_ostride] = tmp37 - tmp38; real_output[3 * real_ostride] = tmp37 + tmp38; } } fftw_codelet_desc fftw_real2hc_16_desc = { "fftw_real2hc_16", (void (*)()) fftw_real2hc_16, 16, FFTW_FORWARD, FFTW_REAL2HC, 354, 0, (const int *) 0, };