/* * 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 20:43:53 EST 1999 */ #include #include /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 5 */ /* * This function contains 12 FP additions, 6 FP multiplications, * (or, 9 additions, 3 multiplications, 3 fused multiply/add), * 12 stack variables, and 10 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: 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_real2hc_5(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride) { fftw_real tmp10; fftw_real tmp7; fftw_real tmp8; fftw_real tmp3; fftw_real tmp11; fftw_real tmp6; fftw_real tmp9; fftw_real tmp12; ASSERT_ALIGNED_DOUBLE; tmp10 = input[0]; { fftw_real tmp1; fftw_real tmp2; fftw_real tmp4; fftw_real tmp5; ASSERT_ALIGNED_DOUBLE; tmp1 = input[istride]; tmp2 = input[4 * istride]; tmp7 = tmp1 + tmp2; tmp4 = input[2 * istride]; tmp5 = input[3 * istride]; tmp8 = tmp4 + tmp5; tmp3 = tmp1 - tmp2; tmp11 = tmp7 + tmp8; tmp6 = tmp4 - tmp5; } imag_output[imag_ostride] = -((K951056516 * tmp3) + (K587785252 * tmp6)); imag_output[2 * imag_ostride] = (K951056516 * tmp6) - (K587785252 * tmp3); real_output[0] = tmp10 + tmp11; tmp9 = K559016994 * (tmp7 - tmp8); tmp12 = tmp10 - (K250000000 * tmp11); real_output[real_ostride] = tmp9 + tmp12; real_output[2 * real_ostride] = tmp12 - tmp9; } fftw_codelet_desc fftw_real2hc_5_desc = { "fftw_real2hc_5", (void (*)()) fftw_real2hc_5, 5, FFTW_FORWARD, FFTW_REAL2HC, 112, 0, (const int *) 0, };