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_6.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 sndobj/rfftw/frc_6.c (limited to 'sndobj/rfftw/frc_6.c') diff --git a/sndobj/rfftw/frc_6.c b/sndobj/rfftw/frc_6.c new file mode 100644 index 0000000..1d5b669 --- /dev/null +++ b/sndobj/rfftw/frc_6.c @@ -0,0 +1,95 @@ +/* + * 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 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: frc_6.c,v 1.1.1.1 2006/05/12 15:14:59 veplaini Exp $ + * $Id: frc_6.c,v 1.1.1.1 2006/05/12 15:14:59 veplaini Exp $ + * $Id: frc_6.c,v 1.1.1.1 2006/05/12 15:14:59 veplaini 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, +}; -- cgit v1.2.3