fhb_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 02:08:58 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-backward 9 */

/*
 * This function contains 182 FP additions, 121 FP multiplications,
 * (or, 130 additions, 69 multiplications, 52 fused multiply/add),
 * 43 stack variables, and 72 memory accesses
 */
static const fftw_real K296198132 =
FFTW_KONST(+0.296198132726023843175338011893050938967728390);
static const fftw_real K813797681 =
FFTW_KONST(+0.813797681349373692844693217248393223289101568);
static const fftw_real K852868531 =
FFTW_KONST(+0.852868531952443209628250963940074071936020296);
static const fftw_real K150383733 =
FFTW_KONST(+0.150383733180435296639271897612501926072238258);
static const fftw_real K663413948 =
FFTW_KONST(+0.663413948168938396205421319635891297216863310);
static const fftw_real K556670399 =
FFTW_KONST(+0.556670399226419366452912952047023132968291906);
static const fftw_real K939692620 =
FFTW_KONST(+0.939692620785908384054109277324731469936208134);
static const fftw_real K342020143 =
FFTW_KONST(+0.342020143325668733044099614682259580763083368);
static const fftw_real K984807753 =
FFTW_KONST(+0.984807753012208059366743024589523013670643252);
static const fftw_real K173648177 =
FFTW_KONST(+0.173648177666930348851716626769314796000375677);
static const fftw_real K1_705737063 =
FFTW_KONST(+1.705737063904886419256501927880148143872040591);
static const fftw_real K300767466 =
FFTW_KONST(+0.300767466360870593278543795225003852144476517);
static const fftw_real K642787609 =
FFTW_KONST(+0.642787609686539326322643409907263432907559884);
static const fftw_real K766044443 =
FFTW_KONST(+0.766044443118978035202392650555416673935832457);
static const fftw_real K1_113340798 =
FFTW_KONST(+1.113340798452838732905825904094046265936583811);
static const fftw_real K1_326827896 =
FFTW_KONST(+1.326827896337876792410842639271782594433726619);
static const fftw_real K500000000 =
FFTW_KONST(+0.500000000000000000000000000000000000000000000);
static const fftw_real K866025403 =
FFTW_KONST(+0.866025403784438646763723170752936183471402627);
static const fftw_real K2_000000000 =
FFTW_KONST(+2.000000000000000000000000000000000000000000000);
static const fftw_real K1_732050807 =
FFTW_KONST(+1.732050807568877293527446341505872366942805254);

/*
 * 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_backward_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 tmp154;
	  fftw_real tmp182;
	  fftw_real tmp176;
	  fftw_real tmp161;
	  fftw_real tmp164;
	  fftw_real tmp159;
	  fftw_real tmp168;
	  fftw_real tmp179;
	  fftw_real tmp171;
	  fftw_real tmp180;
	  fftw_real tmp160;
	  fftw_real tmp165;
	  ASSERT_ALIGNED_DOUBLE;
	  {
	       fftw_real tmp175;
	       fftw_real tmp152;
	       fftw_real tmp153;
	       fftw_real tmp173;
	       fftw_real tmp174;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp174 = Y[-3 * iostride];
	       tmp175 = K1_732050807 * tmp174;
	       tmp152 = X[0];
	       tmp153 = X[3 * iostride];
	       tmp173 = tmp153 - tmp152;
	       tmp154 = tmp152 + (K2_000000000 * tmp153);
	       tmp182 = tmp175 - tmp173;
	       tmp176 = tmp173 + tmp175;
	  }
	  {
	       fftw_real tmp155;
	       fftw_real tmp158;
	       fftw_real tmp169;
	       fftw_real tmp167;
	       fftw_real tmp166;
	       fftw_real tmp170;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp155 = X[iostride];
	       tmp161 = Y[-iostride];
	       {
		    fftw_real tmp156;
		    fftw_real tmp157;
		    fftw_real tmp162;
		    fftw_real tmp163;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp156 = X[4 * iostride];
		    tmp157 = X[2 * iostride];
		    tmp158 = tmp156 + tmp157;
		    tmp169 = K866025403 * (tmp156 - tmp157);
		    tmp162 = Y[-2 * iostride];
		    tmp163 = Y[-4 * iostride];
		    tmp164 = tmp162 - tmp163;
		    tmp167 = K866025403 * (tmp162 + tmp163);
	       }
	       tmp159 = tmp155 + tmp158;
	       tmp166 = tmp155 - (K500000000 * tmp158);
	       tmp168 = tmp166 - tmp167;
	       tmp179 = tmp166 + tmp167;
	       tmp170 = tmp161 + (K500000000 * tmp164);
	       tmp171 = tmp169 + tmp170;
	       tmp180 = tmp170 - tmp169;
	  }
	  X[0] = tmp154 + (K2_000000000 * tmp159);
	  tmp160 = tmp154 - tmp159;
	  tmp165 = K1_732050807 * (tmp161 - tmp164);
	  X[6 * iostride] = tmp160 + tmp165;
	  X[3 * iostride] = tmp160 - tmp165;
	  {
	       fftw_real tmp177;
	       fftw_real tmp172;
	       fftw_real tmp178;
	       fftw_real tmp184;
	       fftw_real tmp181;
	       fftw_real tmp183;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp177 = (K1_326827896 * tmp171) + (K1_113340798 * tmp168);
	       tmp172 = (K766044443 * tmp168) - (K642787609 * tmp171);
	       tmp178 = tmp172 + tmp176;
	       X[iostride] = (K2_000000000 * tmp172) - tmp176;
	       X[7 * iostride] = tmp177 - tmp178;
	       X[4 * iostride] = -(tmp177 + tmp178);
	       tmp184 = (K300767466 * tmp180) + (K1_705737063 * tmp179);
	       tmp181 = (K173648177 * tmp179) - (K984807753 * tmp180);
	       tmp183 = tmp182 - tmp181;
	       X[2 * iostride] = (K2_000000000 * tmp181) + tmp182;
	       X[8 * iostride] = tmp184 + tmp183;
	       X[5 * iostride] = tmp183 - tmp184;
	  }
     }
     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 tmp44;
	  fftw_real tmp87;
	  fftw_real tmp135;
	  fftw_real tmp60;
	  fftw_real tmp107;
	  fftw_real tmp125;
	  fftw_real tmp49;
	  fftw_real tmp54;
	  fftw_real tmp55;
	  fftw_real tmp101;
	  fftw_real tmp109;
	  fftw_real tmp131;
	  fftw_real tmp137;
	  fftw_real tmp128;
	  fftw_real tmp136;
	  fftw_real tmp94;
	  fftw_real tmp108;
	  fftw_real tmp65;
	  fftw_real tmp70;
	  fftw_real tmp71;
	  ASSERT_ALIGNED_DOUBLE;
	  {
	       fftw_real tmp40;
	       fftw_real tmp56;
	       fftw_real tmp43;
	       fftw_real tmp105;
	       fftw_real tmp59;
	       fftw_real tmp86;
	       fftw_real tmp85;
	       fftw_real tmp106;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp40 = X[0];
	       tmp56 = Y[0];
	       {
		    fftw_real tmp41;
		    fftw_real tmp42;
		    fftw_real tmp57;
		    fftw_real tmp58;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp41 = X[3 * iostride];
		    tmp42 = Y[-6 * iostride];
		    tmp43 = tmp41 + tmp42;
		    tmp105 = K866025403 * (tmp41 - tmp42);
		    tmp57 = Y[-3 * iostride];
		    tmp58 = X[6 * iostride];
		    tmp59 = tmp57 - tmp58;
		    tmp86 = K866025403 * (tmp57 + tmp58);
	       }
	       tmp44 = tmp40 + tmp43;
	       tmp85 = tmp40 - (K500000000 * tmp43);
	       tmp87 = tmp85 - tmp86;
	       tmp135 = tmp85 + tmp86;
	       tmp60 = tmp56 + tmp59;
	       tmp106 = tmp56 - (K500000000 * tmp59);
	       tmp107 = tmp105 + tmp106;
	       tmp125 = tmp106 - tmp105;
	  }
	  {
	       fftw_real tmp45;
	       fftw_real tmp48;
	       fftw_real tmp88;
	       fftw_real tmp91;
	       fftw_real tmp61;
	       fftw_real tmp64;
	       fftw_real tmp89;
	       fftw_real tmp92;
	       fftw_real tmp50;
	       fftw_real tmp53;
	       fftw_real tmp95;
	       fftw_real tmp98;
	       fftw_real tmp66;
	       fftw_real tmp69;
	       fftw_real tmp96;
	       fftw_real tmp99;
	       ASSERT_ALIGNED_DOUBLE;
	       {
		    fftw_real tmp46;
		    fftw_real tmp47;
		    fftw_real tmp62;
		    fftw_real tmp63;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp45 = X[iostride];
		    tmp46 = X[4 * iostride];
		    tmp47 = Y[-7 * iostride];
		    tmp48 = tmp46 + tmp47;
		    tmp88 = tmp45 - (K500000000 * tmp48);
		    tmp91 = K866025403 * (tmp46 - tmp47);
		    tmp61 = Y[-iostride];
		    tmp62 = Y[-4 * iostride];
		    tmp63 = X[7 * iostride];
		    tmp64 = tmp62 - tmp63;
		    tmp89 = K866025403 * (tmp62 + tmp63);
		    tmp92 = tmp61 - (K500000000 * tmp64);
	       }
	       {
		    fftw_real tmp51;
		    fftw_real tmp52;
		    fftw_real tmp67;
		    fftw_real tmp68;
		    ASSERT_ALIGNED_DOUBLE;
		    tmp50 = X[2 * iostride];
		    tmp51 = Y[-5 * iostride];
		    tmp52 = Y[-8 * iostride];
		    tmp53 = tmp51 + tmp52;
		    tmp95 = tmp50 - (K500000000 * tmp53);
		    tmp98 = K866025403 * (tmp51 - tmp52);
		    tmp66 = Y[-2 * iostride];
		    tmp67 = X[5 * iostride];
		    tmp68 = X[8 * iostride];
		    tmp69 = tmp67 + tmp68;
		    tmp96 = K866025403 * (tmp67 - tmp68);
		    tmp99 = tmp66 + (K500000000 * tmp69);
	       }
	       tmp49 = tmp45 + tmp48;
	       tmp54 = tmp50 + tmp53;
	       tmp55 = tmp49 + tmp54;
	       {
		    fftw_real tmp97;
		    fftw_real tmp100;