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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 13:55:28 EDT 1999 */

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

/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-forward 2 */

/*
 * This function contains 8 FP additions, 4 FP multiplications,
 * (or, 6 additions, 2 multiplications, 2 fused multiply/add),
 * 11 stack variables, and 16 memory accesses
 */

/*
 * Generator Id's :
 * $Id: fhf_2.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $
 * $Id: fhf_2.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $
 * $Id: fhf_2.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $
 */

void fftw_hc2hc_forward_2(fftw_real *A, const fftw_complex *W, int iostride, int m, int dist)
{
     int i;
     fftw_real *X;
     fftw_real *Y;
     X = A;
     Y = A + (2 * iostride);
     {
          fftw_real tmp11;
          fftw_real tmp12;
          ASSERT_ALIGNED_DOUBLE();
          tmp11 = X[0];
          tmp12 = X[iostride];
          X[iostride] = tmp11 - tmp12;
          X[0] = tmp11 + tmp12;
     }
     X = X + dist;
     Y = Y - dist;
     for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 1) {
          fftw_real tmp3;
          fftw_real tmp9;
          fftw_real tmp8;
          fftw_real tmp10;
          ASSERT_ALIGNED_DOUBLE();
          tmp3 = X[0];
          tmp9 = Y[-iostride];
          {
               fftw_real tmp5;
               fftw_real tmp7;
               fftw_real tmp4;
               fftw_real tmp6;
               ASSERT_ALIGNED_DOUBLE();
               tmp5 = X[iostride];
               tmp7 = Y[0];
               tmp4 = c_re(W[0]);
               tmp6 = c_im(W[0]);
               tmp8 = (tmp4 * tmp5) - (tmp6 * tmp7);
               tmp10 = (tmp6 * tmp5) + (tmp4 * tmp7);
          }
          Y[-iostride] = tmp3 - tmp8;
          X[0] = tmp3 + tmp8;
          X[iostride] = -(tmp9 - tmp10);
          Y[0] = tmp10 + tmp9;
     }
     if (i == m) {
          fftw_real tmp1;
          fftw_real tmp2;
          ASSERT_ALIGNED_DOUBLE();
          tmp1 = X[0];
          X[0] = tmp1;
          tmp2 = X[iostride];
          Y[0] = -tmp2;
     }
}

static const int twiddle_order[] =
{1};
fftw_codelet_desc fftw_hc2hc_forward_2_desc =
{
     "fftw_hc2hc_forward_2",
     (void (*)()) fftw_hc2hc_forward_2,
     2,
     FFTW_FORWARD,
     FFTW_HC2HC,
     47,
     1,
     twiddle_order,
};