/* * 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 20:44:19 EST 1999 */ #include #include /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2real 5 */ /* * This function contains 12 FP additions, 7 FP multiplications, * (or, 8 additions, 3 multiplications, 4 fused multiply/add), * 12 stack variables, and 10 memory accesses */ static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000); static const fftw_real K1_118033988 = FFTW_KONST(+1.118033988749894848204586834365638117720309180); static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000); static const fftw_real K1_902113032 = FFTW_KONST(+1.902113032590307144232878666758764286811397268); static const fftw_real K1_175570504 = FFTW_KONST(+1.175570504584946258337411909278145537195304875); /* * 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_hc2real_5(const fftw_real *real_input, const fftw_real *imag_input, fftw_real *output, int real_istride, int imag_istride, int ostride) { fftw_real tmp10; fftw_real tmp12; fftw_real tmp1; fftw_real tmp4; fftw_real tmp5; fftw_real tmp6; fftw_real tmp11; fftw_real tmp7; ASSERT_ALIGNED_DOUBLE; { fftw_real tmp8; fftw_real tmp9; fftw_real tmp2; fftw_real tmp3; ASSERT_ALIGNED_DOUBLE; tmp8 = imag_input[imag_istride]; tmp9 = imag_input[2 * imag_istride]; tmp10 = (K1_175570504 * tmp8) - (K1_902113032 * tmp9); tmp12 = (K1_902113032 * tmp8) + (K1_175570504 * tmp9); tmp1 = real_input[0]; tmp2 = real_input[real_istride]; tmp3 = real_input[2 * real_istride]; tmp4 = tmp2 + tmp3; tmp5 = tmp1 - (K500000000 * tmp4); tmp6 = K1_118033988 * (tmp2 - tmp3); } output[0] = tmp1 + (K2_000000000 * tmp4); tmp11 = tmp6 + tmp5; output[ostride] = tmp11 - tmp12; output[4 * ostride] = tmp11 + tmp12; tmp7 = tmp5 - tmp6; output[2 * ostride] = tmp7 - tmp10; output[3 * ostride] = tmp7 + tmp10; } fftw_codelet_desc fftw_hc2real_5_desc = { "fftw_hc2real_5", (void (*)()) fftw_hc2real_5, 5, FFTW_BACKWARD, FFTW_HC2REAL, 125, 0, (const int *) 0, };