/* * 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 20:43:54 EST 1999 */ #include #include /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 8 */ /* * This function contains 20 FP additions, 2 FP multiplications, * (or, 20 additions, 2 multiplications, 0 fused multiply/add), * 12 stack variables, and 16 memory accesses */ static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938); /* * 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_8(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 tmp7; fftw_real tmp13; fftw_real tmp19; fftw_real tmp6; fftw_real tmp16; fftw_real tmp10; fftw_real tmp18; ASSERT_ALIGNED_DOUBLE; { fftw_real tmp1; fftw_real tmp2; fftw_real tmp11; fftw_real tmp12; ASSERT_ALIGNED_DOUBLE; tmp1 = input[0]; tmp2 = input[4 * istride]; tmp3 = tmp1 + tmp2; tmp7 = tmp1 - tmp2; tmp11 = input[7 * istride]; tmp12 = input[3 * istride]; tmp13 = tmp11 - tmp12; tmp19 = tmp11 + tmp12; } { fftw_real tmp4; fftw_real tmp5; fftw_real tmp8; fftw_real tmp9; ASSERT_ALIGNED_DOUBLE; tmp4 = input[2 * istride]; tmp5 = input[6 * istride]; tmp6 = tmp4 + tmp5; tmp16 = tmp4 - tmp5; tmp8 = input[istride]; tmp9 = input[5 * istride]; tmp10 = tmp8 - tmp9; tmp18 = tmp8 + tmp9; } { fftw_real tmp17; fftw_real tmp20; fftw_real tmp14; fftw_real tmp15; ASSERT_ALIGNED_DOUBLE; real_output[2 * real_ostride] = tmp3 - tmp6; tmp17 = tmp3 + tmp6; tmp20 = tmp18 + tmp19; real_output[4 * real_ostride] = tmp17 - tmp20; real_output[0] = tmp17 + tmp20; imag_output[2 * imag_ostride] = tmp19 - tmp18; tmp14 = K707106781 * (tmp10 + tmp13); real_output[3 * real_ostride] = tmp7 - tmp14; real_output[real_ostride] = tmp7 + tmp14; tmp15 = K707106781 * (tmp13 - tmp10); imag_output[imag_ostride] = tmp15 - tmp16; imag_output[3 * imag_ostride] = tmp16 + tmp15; } } fftw_codelet_desc fftw_real2hc_8_desc = { "fftw_real2hc_8", (void (*)()) fftw_real2hc_8, 8, FFTW_FORWARD, FFTW_REAL2HC, 178, 0, (const int *) 0, };