Subversion Repositories shark

/*
 * 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 Tue May 18 13:54:27 EDT 1999 */

#include <fftw-int.h>
#include <fftw.h>

/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddle 4 */

/*
 * This function contains 16 FP additions, 0 FP multiplications,
 * (or, 16 additions, 0 multiplications, 0 fused multiply/add),
 * 12 stack variables, and 16 memory accesses
 */

/*
 * Generator Id's :
 * $Id: fn_4.c,v 1.2 2003-03-24 11:14:50 pj Exp $
 * $Id: fn_4.c,v 1.2 2003-03-24 11:14:50 pj Exp $
 * $Id: fn_4.c,v 1.2 2003-03-24 11:14:50 pj Exp $
 */

void fftw_no_twiddle_4(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
     fftw_real tmp3;
     fftw_real tmp11;
     fftw_real tmp9;
     fftw_real tmp15;
     fftw_real tmp6;
     fftw_real tmp10;
     fftw_real tmp14;
     fftw_real tmp16;
     ASSERT_ALIGNED_DOUBLE();
     {
          fftw_real tmp1;
          fftw_real tmp2;
          fftw_real tmp7;
          fftw_real tmp8;
          ASSERT_ALIGNED_DOUBLE();
          tmp1 = c_re(input[0]);
          tmp2 = c_re(input[2 * istride]);
          tmp3 = tmp1 + tmp2;
          tmp11 = tmp1 - tmp2;
          tmp7 = c_im(input[0]);
          tmp8 = c_im(input[2 * istride]);
          tmp9 = tmp7 - tmp8;
          tmp15 = tmp7 + tmp8;
     }
     {
          fftw_real tmp4;
          fftw_real tmp5;
          fftw_real tmp12;
          fftw_real tmp13;
          ASSERT_ALIGNED_DOUBLE();
          tmp4 = c_re(input[istride]);
          tmp5 = c_re(input[3 * istride]);
          tmp6 = tmp4 + tmp5;
          tmp10 = tmp4 - tmp5;
          tmp12 = c_im(input[istride]);
          tmp13 = c_im(input[3 * istride]);
          tmp14 = tmp12 - tmp13;
          tmp16 = tmp12 + tmp13;
     }
     c_re(output[2 * ostride]) = tmp3 - tmp6;
     c_re(output[0]) = tmp3 + tmp6;
     c_im(output[ostride]) = tmp9 - tmp10;
     c_im(output[3 * ostride]) = tmp10 + tmp9;
     c_re(output[3 * ostride]) = tmp11 - tmp14;
     c_re(output[ostride]) = tmp11 + tmp14;
     c_im(output[2 * ostride]) = tmp15 - tmp16;
     c_im(output[0]) = tmp15 + tmp16;
}

fftw_codelet_desc fftw_no_twiddle_4_desc =
{
     "fftw_no_twiddle_4",
     (void (*)()) fftw_no_twiddle_4,
     4,
     FFTW_FORWARD,
     FFTW_NOTW,
     89,
     0,
     (const int *) 0,
};