/* * 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 02:05:52 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 6 */ /* * This function contains 14 FP additions, 4 FP multiplications, * (or, 12 additions, 2 multiplications, 2 fused multiply/add), * 14 stack variables, and 12 memory accesses */ static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000); static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627); /* * 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_6(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 tmp13; fftw_real tmp9; fftw_real tmp11; fftw_real tmp6; fftw_real tmp12; fftw_real tmp1; fftw_real tmp2; fftw_real tmp10; fftw_real tmp14; ASSERT_ALIGNED_DOUBLE; tmp1 = input[0]; tmp2 = input[3 * istride]; tmp3 = tmp1 - tmp2; tmp13 = tmp1 + tmp2; { fftw_real tmp7; fftw_real tmp8; fftw_real tmp4; fftw_real tmp5; ASSERT_ALIGNED_DOUBLE; tmp7 = input[4 * istride]; tmp8 = input[istride]; tmp9 = tmp7 - tmp8; tmp11 = tmp7 + tmp8; tmp4 = input[2 * istride]; tmp5 = input[5 * istride]; tmp6 = tmp4 - tmp5; tmp12 = tmp4 + tmp5; } imag_output[imag_ostride] = K866025403 * (tmp9 - tmp6); tmp10 = tmp6 + tmp9; real_output[real_ostride] = tmp3 - (K500000000 * tmp10); real_output[3 * real_ostride] = tmp3 + tmp10; imag_output[2 * imag_ostride] = -(K866025403 * (tmp11 - tmp12)); tmp14 = tmp12 + tmp11; real_output[2 * real_ostride] = tmp13 - (K500000000 * tmp14); real_output[0] = tmp13 + tmp14; } fftw_codelet_desc fftw_real2hc_6_desc = { "fftw_real2hc_6", (void (*)()) fftw_real2hc_6, 6, FFTW_FORWARD, FFTW_REAL2HC, 134, 0, (const int *) 0, };