fhf_9.c

FFTW, a collection of fast C routines to compute the Discrete Fourier Transform in one or more dime

/*
 * Copyright (c) 1997-1999, 2003 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 Mon Mar 24 02:08:05 EST 2003 */

#include "fftw-int.h"
#include "fftw.h"

/* Generated by: /homee/stevenj/cvs/fftw/gensrc/genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-forward 9 */

/*
 * This function contains 188 FP additions, 136 FP multiplications,
 * (or, 139 additions, 87 multiplications, 49 fused multiply/add),
 * 35 stack variables, and 72 memory accesses
 */
static const fftw_real K433012701 =
FFTW_KONST(+0.433012701892219323381861585376468091735701313);
static const fftw_real K250000000 =
FFTW_KONST(+0.250000000000000000000000000000000000000000000);
static const fftw_real K1_285575219 =
FFTW_KONST(+1.285575219373078652645286819814526865815119768);
static const fftw_real K684040286 =
FFTW_KONST(+0.684040286651337466088199229364519161526166735);
static const fftw_real K1_969615506 =
FFTW_KONST(+1.969615506024416118733486049179046027341286503);
static const fftw_real K1_532088886 =
FFTW_KONST(+1.532088886237956070404785301110833347871664914);
static const fftw_real K1_879385241 =
FFTW_KONST(+1.879385241571816768108218554649462939872416269);
static const fftw_real K347296355 =
FFTW_KONST(+0.347296355333860697703433253538629592000751354);
static const fftw_real K342020143 =
FFTW_KONST(+0.342020143325668733044099614682259580763083368);
static const fftw_real K813797681 =
FFTW_KONST(+0.813797681349373692844693217248393223289101568);
static const fftw_real K939692620 =
FFTW_KONST(+0.939692620785908384054109277324731469936208134);
static const fftw_real K296198132 =
FFTW_KONST(+0.296198132726023843175338011893050938967728390);
static const fftw_real K852868531 =
FFTW_KONST(+0.852868531952443209628250963940074071936020296);
static const fftw_real K173648177 =
FFTW_KONST(+0.173648177666930348851716626769314796000375677);
static const fftw_real K556670399 =
FFTW_KONST(+0.556670399226419366452912952047023132968291906);
static const fftw_real K766044443 =
FFTW_KONST(+0.766044443118978035202392650555416673935832457);
static const fftw_real K984807753 =
FFTW_KONST(+0.984807753012208059366743024589523013670643252);
static const fftw_real K150383733 =
FFTW_KONST(+0.150383733180435296639271897612501926072238258);
static const fftw_real K642787609 =
FFTW_KONST(+0.642787609686539326322643409907263432907559884);
static const fftw_real K663413948 =
FFTW_KONST(+0.663413948168938396205421319635891297216863310);
static const fftw_real K866025403 =
FFTW_KONST(+0.866025403784438646763723170752936183471402627);
static const fftw_real K500000000 =
FFTW_KONST(+0.500000000000000000000000000000000000000000000);

/*
 * Generator Id's : 
 * $Id: exprdag.ml,v 1.43 2003/03/16 23:43:46 stevenj Exp $
 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
 */

void fftw_hc2hc_forward_9(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 + (9 * iostride);
     {
	  fftw_real tmp136;
	  fftw_real tmp150;
	  fftw_real tmp155;
	  fftw_real tmp154;
	  fftw_real tmp139;
	  fftw_real tmp162;
	  fftw_real tmp145;
	  fftw_real tmp153;
	  fftw_real tmp156;
	  fftw_real tmp137;
	  fftw_real tmp138;
	  fftw_real tmp140;
	  fftw_real tmp151;
	  ASSERT_ALIGNED_DOUBLE;
	  tmp136 = X[0];
	  {
	       fftw_real tmp146;
	       fftw_real tmp147;
	       fftw_real tmp148;
	       fftw_real tmp149;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp146 = X[2 * iostride];
	       tmp147 = X[5 * iostride];
	       tmp148 = X[8 * iostride];
	       tmp149 = tmp147 + tmp148;
	       tmp150 = tmp146 + tmp149;
	       tmp155 = tmp146 - (K500000000 * tmp149);
	       tmp154 = tmp148 - tmp147;
	  }
	  tmp137 = X[3 * iostride];
	  tmp138 = X[6 * iostride];
	  tmp139 = tmp137 + tmp138;
	  tmp162 = tmp138 - tmp137;
	  {
	       fftw_real tmp141;
	       fftw_real tmp142;
	       fftw_real tmp143;
	       fftw_real tmp144;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp141 = X[iostride];
	       tmp142 = X[4 * iostride];
	       tmp143 = X[7 * iostride];
	       tmp144 = tmp142 + tmp143;
	       tmp145 = tmp141 + tmp144;
	       tmp153 = tmp141 - (K500000000 * tmp144);
	       tmp156 = tmp143 - tmp142;
	  }
	  Y[-3 * iostride] = K866025403 * (tmp150 - tmp145);
	  tmp140 = tmp136 + tmp139;
	  tmp151 = tmp145 + tmp150;
	  X[3 * iostride] = tmp140 - (K500000000 * tmp151);
	  X[0] = tmp140 + tmp151;
	  {
	       fftw_real tmp164;
	       fftw_real tmp160;
	       fftw_real tmp161;
	       fftw_real tmp163;
	       fftw_real tmp152;
	       fftw_real tmp157;
	       fftw_real tmp158;
	       fftw_real tmp159;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp164 = K866025403 * tmp162;
	       tmp160 = (K663413948 * tmp156) - (K642787609 * tmp153);
	       tmp161 = (K150383733 * tmp154) - (K984807753 * tmp155);
	       tmp163 = tmp160 + tmp161;
	       tmp152 = tmp136 - (K500000000 * tmp139);
	       tmp157 = (K766044443 * tmp153) + (K556670399 * tmp156);
	       tmp158 = (K173648177 * tmp155) + (K852868531 * tmp154);
	       tmp159 = tmp157 + tmp158;
	       X[iostride] = tmp152 + tmp159;
	       X[4 * iostride] =
		   tmp152 + (K866025403 * (tmp160 - tmp161)) -
		   (K500000000 * tmp159);
	       X[2 * iostride] =
		   tmp152 + (K173648177 * tmp153) - (K296198132 * tmp154) -
		   (K939692620 * tmp155) - (K852868531 * tmp156);
	       Y[-iostride] = tmp164 + tmp163;
	       Y[-4 * iostride] =
		   (K866025403 * (tmp162 + (tmp158 - tmp157))) -
		   (K500000000 * tmp163);
	       Y[-2 * iostride] =
		   (K813797681 * tmp154) - (K342020143 * tmp155) -
		   (K150383733 * tmp156) - (K984807753 * tmp153) - tmp164;
	  }
     }
     X = X + dist;
     Y = Y - dist;
     for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 8) {
	  fftw_real tmp24;
	  fftw_real tmp122;
	  fftw_real tmp75;
	  fftw_real tmp121;
	  fftw_real tmp128;
	  fftw_real tmp127;
	  fftw_real tmp35;
	  fftw_real tmp72;
	  fftw_real tmp70;
	  fftw_real tmp92;
	  fftw_real tmp109;
	  fftw_real tmp118;
	  fftw_real tmp97;
	  fftw_real tmp108;
	  fftw_real tmp53;
	  fftw_real tmp81;
	  fftw_real tmp105;
	  fftw_real tmp117;
	  fftw_real tmp86;
	  fftw_real tmp106;
	  ASSERT_ALIGNED_DOUBLE;
	  {
	       fftw_real tmp29;
	       fftw_real tmp73;
	       fftw_real tmp34;
	       fftw_real tmp74;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp24 = X[0];
	       tmp122 = Y[-8 * iostride];
	       {
		    fftw_real tmp26;
		    fftw_real tmp28;
		    fftw_real tmp25;
		    fftw_real tmp27;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp26 = X[3 * iostride];
		    tmp28 = Y[-5 * iostride];
		    tmp25 = c_re(W[2]);
		    tmp27 = c_im(W[2]);
		    tmp29 = (tmp25 * tmp26) - (tmp27 * tmp28);
		    tmp73 = (tmp27 * tmp26) + (tmp25 * tmp28);
	       }
	       {
		    fftw_real tmp31;
		    fftw_real tmp33;
		    fftw_real tmp30;
		    fftw_real tmp32;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp31 = X[6 * iostride];
		    tmp33 = Y[-2 * iostride];
		    tmp30 = c_re(W[5]);
		    tmp32 = c_im(W[5]);
		    tmp34 = (tmp30 * tmp31) - (tmp32 * tmp33);
		    tmp74 = (tmp32 * tmp31) + (tmp30 * tmp33);
	       }
	       tmp75 = K866025403 * (tmp73 - tmp74);
	       tmp121 = tmp73 + tmp74;
	       tmp128 = tmp122 - (K500000000 * tmp121);
	       tmp127 = K866025403 * (tmp34 - tmp29);
	       tmp35 = tmp29 + tmp34;
	       tmp72 = tmp24 - (K500000000 * tmp35);
	  }
	  {
	       fftw_real tmp58;
	       fftw_real tmp94;
	       fftw_real tmp63;
	       fftw_real tmp89;
	       fftw_real tmp68;
	       fftw_real tmp90;
	       fftw_real tmp69;
	       fftw_real tmp95;
	       ASSERT_ALIGNED_DOUBLE;
	       {
		    fftw_real tmp55;
		    fftw_real tmp57;
		    fftw_real tmp54;
		    fftw_real tmp56;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp55 = X[2 * iostride];
		    tmp57 = Y[-6 * iostride];
		    tmp54 = c_re(W[1]);
		    tmp56 = c_im(W[1]);
		    tmp58 = (tmp54 * tmp55) - (tmp56 * tmp57);
		    tmp94 = (tmp56 * tmp55) + (tmp54 * tmp57);
	       }
	       {
		    fftw_real tmp60;
		    fftw_real tmp62;
		    fftw_real tmp59;
		    fftw_real tmp61;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp60 = X[5 * iostride];
		    tmp62 = Y[-3 * iostride];
		    tmp59 = c_re(W[4]);
		    tmp61 = c_im(W[4]);
		    tmp63 = (tmp59 * tmp60) - (tmp61 * tmp62);
		    tmp89 = (tmp61 * tmp60) + (tmp59 * tmp62);
	       }
	       {
		    fftw_real tmp65;
		    fftw_real tmp67;
		    fftw_real tmp64;
		    fftw_real tmp66;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp65 = X[8 * iostride];
		    tmp67 = Y[0];
		    tmp64 = c_re(W[7]);
		    tmp66 = c_im(W[7]);