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/*
 * 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 13:55:46 EDT 1999 */

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

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

/*
 * This function contains 22 FP additions, 12 FP multiplications,
 * (or, 16 additions, 6 multiplications, 6 fused multiply/add),
 * 14 stack variables, and 16 memory accesses
 */


/*
 * Generator Id's :
 * $Id: ftwi_4.c,v 1.2 2003-03-24 11:14:53 pj Exp $
 * $Id: ftwi_4.c,v 1.2 2003-03-24 11:14:53 pj Exp $
 * $Id: ftwi_4.c,v 1.2 2003-03-24 11:14:53 pj Exp $
 */


void fftwi_twiddle_4(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist)
{
     int i;
     fftw_complex *inout;
     inout = A;
     for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 3) {
          fftw_real tmp1;
          fftw_real tmp25;
          fftw_real tmp6;
          fftw_real tmp24;
          fftw_real tmp12;
          fftw_real tmp20;
          fftw_real tmp17;
          fftw_real tmp21;
          ASSERT_ALIGNED_DOUBLE();
          tmp1 = c_re(inout[0]);
          tmp25 = c_im(inout[0]);
          {
               fftw_real tmp3;
               fftw_real tmp5;
               fftw_real tmp2;
               fftw_real tmp4;
               ASSERT_ALIGNED_DOUBLE();
               tmp3 = c_re(inout[2 * iostride]);
               tmp5 = c_im(inout[2 * iostride]);
               tmp2 = c_re(W[1]);
               tmp4 = c_im(W[1]);
               tmp6 = (tmp2 * tmp3) + (tmp4 * tmp5);
               tmp24 = (tmp2 * tmp5) - (tmp4 * tmp3);
          }
          {
               fftw_real tmp9;
               fftw_real tmp11;
               fftw_real tmp8;
               fftw_real tmp10;
               ASSERT_ALIGNED_DOUBLE();
               tmp9 = c_re(inout[iostride]);
               tmp11 = c_im(inout[iostride]);
               tmp8 = c_re(W[0]);
               tmp10 = c_im(W[0]);
               tmp12 = (tmp8 * tmp9) + (tmp10 * tmp11);
               tmp20 = (tmp8 * tmp11) - (tmp10 * tmp9);
          }
          {
               fftw_real tmp14;
               fftw_real tmp16;
               fftw_real tmp13;
               fftw_real tmp15;
               ASSERT_ALIGNED_DOUBLE();
               tmp14 = c_re(inout[3 * iostride]);
               tmp16 = c_im(inout[3 * iostride]);
               tmp13 = c_re(W[2]);
               tmp15 = c_im(W[2]);
               tmp17 = (tmp13 * tmp14) + (tmp15 * tmp16);
               tmp21 = (tmp13 * tmp16) - (tmp15 * tmp14);
          }
          {
               fftw_real tmp7;
               fftw_real tmp18;
               fftw_real tmp27;
               fftw_real tmp28;
               ASSERT_ALIGNED_DOUBLE();
               tmp7 = tmp1 + tmp6;
               tmp18 = tmp12 + tmp17;
               c_re(inout[2 * iostride]) = tmp7 - tmp18;
               c_re(inout[0]) = tmp7 + tmp18;
               tmp27 = tmp12 - tmp17;
               tmp28 = tmp25 - tmp24;
               c_im(inout[iostride]) = tmp27 + tmp28;
               c_im(inout[3 * iostride]) = tmp28 - tmp27;
          }
          {
               fftw_real tmp23;
               fftw_real tmp26;
               fftw_real tmp19;
               fftw_real tmp22;
               ASSERT_ALIGNED_DOUBLE();
               tmp23 = tmp20 + tmp21;
               tmp26 = tmp24 + tmp25;
               c_im(inout[0]) = tmp23 + tmp26;
               c_im(inout[2 * iostride]) = tmp26 - tmp23;
               tmp19 = tmp1 - tmp6;
               tmp22 = tmp20 - tmp21;
               c_re(inout[iostride]) = tmp19 - tmp22;
               c_re(inout[3 * iostride]) = tmp19 + tmp22;
          }
     }
}

static const int twiddle_order[] =
{1, 2, 3};
fftw_codelet_desc fftwi_twiddle_4_desc =
{
     "fftwi_twiddle_4",
     (void (*)()) fftwi_twiddle_4,
     4,
     FFTW_BACKWARD,
     FFTW_TWIDDLE,
     99,
     3,
     twiddle_order,
};