From 30755b92afeae5a5a32860b4f4297180f6d3398d Mon Sep 17 00:00:00 2001 From: John Glover Date: Mon, 18 Oct 2010 17:32:05 +0100 Subject: Moved project over to Git --- sndobj/rfftw/frc_8.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 sndobj/rfftw/frc_8.c (limited to 'sndobj/rfftw/frc_8.c') diff --git a/sndobj/rfftw/frc_8.c b/sndobj/rfftw/frc_8.c new file mode 100644 index 0000000..660c9e1 --- /dev/null +++ b/sndobj/rfftw/frc_8.c @@ -0,0 +1,114 @@ +/* + * 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: frc_8.c,v 1.1.1.1 2006/05/12 15:14:59 veplaini Exp $ + * $Id: frc_8.c,v 1.1.1.1 2006/05/12 15:14:59 veplaini Exp $ + * $Id: frc_8.c,v 1.1.1.1 2006/05/12 15:14:59 veplaini 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, +}; -- cgit v1.2.3