/*
 * Copyright (c) 1997-1999 Massachusetts Institute of Technology
 * Copyright (c) 2000-2002 Stefan Kral
 *
 * 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 Feb 19 15:31:06 CET 2002 */

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



/* Generated by: ./genfft_orig -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-backward 7 */

/*
 * This function contains 120 FP additions, 98 FP multiplications,
 * (or, 106 additions, 84 multiplications, 14 fused multiply/add),
 * 32 stack variables, and 56 memory accesses
 */
static const fftw_real K222520933 =
FFTW_KONST (+0.222520933956314404288902564496794759466355569);
static const fftw_real K900968867 =
FFTW_KONST (+0.900968867902419126236102319507445051165919162);
static const fftw_real K623489801 =
FFTW_KONST (+0.623489801858733530525004884004239810632274731);
static const fftw_real K781831482 =
FFTW_KONST (+0.781831482468029808708444526674057750232334519);
static const fftw_real K974927912 =
FFTW_KONST (+0.974927912181823607018131682993931217232785801);
static const fftw_real K433883739 =
FFTW_KONST (+0.433883739117558120475768332848358754609990728);
static const fftw_real K2_000000000 =
FFTW_KONST (+2.000000000000000000000000000000000000000000000);
static const fftw_real K1_801937735 =
FFTW_KONST (+1.801937735804838252472204639014890102331838324);
static const fftw_real K445041867 =
FFTW_KONST (+0.445041867912628808577805128993589518932711138);
static const fftw_real K1_246979603 =
FFTW_KONST (+1.246979603717467061050009768008479621264549462);
static const fftw_real K867767478 =
FFTW_KONST (+0.867767478235116240951536665696717509219981456);
static const fftw_real K1_949855824 =
FFTW_KONST (+1.949855824363647214036263365987862434465571601);
static const fftw_real K1_563662964 =
FFTW_KONST (+1.563662964936059617416889053348115500464669037);


/*
 * Generator Id's : 
 * $Id: exprdag.ml,v 1.41 1999/05/26 15:44:14 fftw Exp $
 * $Id: fft.ml,v 1.43 1999/05/17 19:44:18 fftw Exp $
 * $Id: to_c.ml,v 1.25 1999/10/26 21:41:32 stevenj Exp $
 */

void
fftw_hc2hc_backward_7 (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 + (7 * iostride);
     {
	  fftw_real tmp84;
	  fftw_real tmp88;
	  fftw_real tmp86;
	  fftw_real tmp76;
	  fftw_real tmp79;
	  fftw_real tmp77;
	  fftw_real tmp78;
	  fftw_real tmp80;
	  fftw_real tmp87;
	  fftw_real tmp85;
	  fftw_real tmp81;
	  fftw_real tmp83;
	  fftw_real tmp82;
	  tmp81 = Y[-2 * iostride];
	  tmp83 = Y[-iostride];
	  tmp82 = Y[-3 * iostride];
	  tmp84 =
	       (K1_563662964 * tmp81) - (K1_949855824 * tmp82) -
	       (K867767478 * tmp83);
	  tmp88 =
	       (K867767478 * tmp81) + (K1_563662964 * tmp82) -
	       (K1_949855824 * tmp83);
	  tmp86 =
	       (K1_563662964 * tmp83) + (K1_949855824 * tmp81) +
	       (K867767478 * tmp82);
	  tmp76 = X[0];
	  tmp79 = X[3 * iostride];
	  tmp77 = X[iostride];
	  tmp78 = X[2 * iostride];
	  tmp80 =
	       tmp76 + (K1_246979603 * tmp78) - (K445041867 * tmp79) -
	       (K1_801937735 * tmp77);
	  tmp87 =
	       tmp76 + (K1_246979603 * tmp79) - (K1_801937735 * tmp78) -
	       (K445041867 * tmp77);
	  tmp85 =
	       tmp76 + (K1_246979603 * tmp77) - (K1_801937735 * tmp79) -
	       (K445041867 * tmp78);
	  X[4 * iostride] = tmp80 - tmp84;
	  X[3 * iostride] = tmp80 + tmp84;
	  X[0] = tmp76 + (K2_000000000 * (tmp77 + tmp78 + tmp79));
	  X[2 * iostride] = tmp87 + tmp88;
	  X[5 * iostride] = tmp87 - tmp88;
	  X[iostride] = tmp85 - tmp86;
	  X[6 * iostride] = tmp85 + tmp86;
     }
     X = X + dist;
     Y = Y - dist;
     for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 6)
       {
	    fftw_real tmp14;
	    fftw_real tmp23;
	    fftw_real tmp17;
	    fftw_real tmp20;
	    fftw_real tmp39;
	    fftw_real tmp53;
	    fftw_real tmp66;
	    fftw_real tmp69;
	    fftw_real tmp57;
	    fftw_real tmp42;
	    fftw_real tmp24;
	    fftw_real tmp33;
	    fftw_real tmp27;
	    fftw_real tmp30;
	    fftw_real tmp46;
	    fftw_real tmp58;
	    fftw_real tmp70;
	    fftw_real tmp65;
	    fftw_real tmp54;
	    fftw_real tmp35;
	    {
		 fftw_real tmp37;
		 fftw_real tmp36;
		 fftw_real tmp38;
		 fftw_real tmp21;
		 fftw_real tmp22;
		 tmp14 = X[0];
		 tmp21 = X[3 * iostride];
		 tmp22 = Y[-4 * iostride];
		 tmp23 = tmp21 + tmp22;
		 tmp37 = tmp21 - tmp22;
		 {
		      fftw_real tmp15;
		      fftw_real tmp16;
		      fftw_real tmp18;
		      fftw_real tmp19;
		      tmp15 = X[iostride];
		      tmp16 = Y[-6 * iostride];
		      tmp17 = tmp15 + tmp16;
		      tmp36 = tmp15 - tmp16;
		      tmp18 = X[2 * iostride];
		      tmp19 = Y[-5 * iostride];
		      tmp20 = tmp18 + tmp19;
		      tmp38 = tmp18 - tmp19;
		 }
		 tmp39 =
		      (K433883739 * tmp36) + (K974927912 * tmp37) -
		      (K781831482 * tmp38);
		 tmp53 =
		      (K781831482 * tmp36) + (K974927912 * tmp38) +
		      (K433883739 * tmp37);
		 tmp66 =
		      (K974927912 * tmp36) - (K781831482 * tmp37) -
		      (K433883739 * tmp38);
		 tmp69 =
		      tmp14 + (K623489801 * tmp23) - (K900968867 * tmp20) -
		      (K222520933 * tmp17);
		 tmp57 =
		      tmp14 + (K623489801 * tmp17) - (K900968867 * tmp23) -
		      (K222520933 * tmp20);
		 tmp42 =
		      tmp14 + (K623489801 * tmp20) - (K222520933 * tmp23) -
		      (K900968867 * tmp17);
	    }
	    {
		 fftw_real tmp44;
		 fftw_real tmp45;
		 fftw_real tmp43;
		 fftw_real tmp31;
		 fftw_real tmp32;
		 tmp24 = Y[0];
		 tmp31 = Y[-3 * iostride];
		 tmp32 = X[4 * iostride];
		 tmp33 = tmp31 - tmp32;
		 tmp44 = tmp31 + tmp32;
		 {
		      fftw_real tmp25;
		      fftw_real tmp26;
		      fftw_real tmp28;
		      fftw_real tmp29;
		      tmp25 = Y[-iostride];
		      tmp26 = X[6 * iostride];
		      tmp27 = tmp25 - tmp26;
		      tmp45 = tmp25 + tmp26;
		      tmp28 = Y[-2 * iostride];
		      tmp29 = X[5 * iostride];
		      tmp30 = tmp28 - tmp29;
		      tmp43 = tmp28 + tmp29;
		 }
		 tmp46 =
		      (K781831482 * tmp43) - (K974927912 * tmp44) -
		      (K433883739 * tmp45);
		 tmp58 =
		      (K781831482 * tmp45) + (K974927912 * tmp43) +
		      (K433883739 * tmp44);
		 tmp70 =
		      (K433883739 * tmp43) + (K781831482 * tmp44) -
		      (K974927912 * tmp45);
		 tmp65 =
		      tmp24 + (K623489801 * tmp33) - (K900968867 * tmp30) -
		      (K222520933 * tmp27);
		 tmp54 =
		      tmp24 + (K623489801 * tmp27) - (K900968867 * tmp33) -
		      (K222520933 * tmp30);
		 tmp35 =
		      tmp24 + (K623489801 * tmp30) - (K222520933 * tmp33) -
		      (K900968867 * tmp27);
	    }
	    X[0] = tmp14 + tmp17 + tmp20 + tmp23;
	    {
		 fftw_real tmp61;
		 fftw_real tmp63;
		 fftw_real tmp60;
		 fftw_real tmp62;
		 tmp61 = tmp54 - tmp53;
		 tmp63 = tmp57 + tmp58;
		 tmp60 = c_re (W[5]);
		 tmp62 = c_im (W[5]);
		 Y[0] = (tmp60 * tmp61) - (tmp62 * tmp63);
		 X[6 * iostride] = (tmp62 * tmp61) + (tmp60 * tmp63);
	    }
	    {
		 fftw_real tmp73;
		 fftw_real tmp75;
		 fftw_real tmp72;
		 fftw_real tmp74;
		 tmp73 = tmp66 + tmp65;
		 tmp75 = tmp69 + tmp70;
		 tmp72 = c_re (W[1]);
		 tmp74 = c_im (W[1]);
		 Y[-4 * iostride] = (tmp72 * tmp73) - (tmp74 * tmp75);
		 X[2 * iostride] = (tmp74 * tmp73) + (tmp72 * tmp75);
	    }
	    {
		 fftw_real tmp67;
		 fftw_real tmp71;
		 fftw_real tmp64;
		 fftw_real tmp68;
		 tmp67 = tmp65 - tmp66;
		 tmp71 = tmp69 - tmp70;
		 tmp64 = c_re (W[4]);
		 tmp68 = c_im (W[4]);
		 Y[-iostride] = (tmp64 * tmp67) - (tmp68 * tmp71);
		 X[5 * iostride] = (tmp68 * tmp67) + (tmp64 * tmp71);
	    }
	    Y[-6 * iostride] = tmp24 + tmp27 + tmp30 + tmp33;
	    {
		 fftw_real tmp40;
		 fftw_real tmp47;
		 fftw_real tmp34;
		 fftw_real tmp41;
		 tmp40 = tmp35 - tmp39;
		 tmp47 = tmp42 - tmp46;
		 tmp34 = c_re (W[3]);
		 tmp41 = c_im (W[3]);
		 Y[-2 * iostride] = (tmp34 * tmp40) - (tmp41 * tmp47);
		 X[4 * iostride] = (tmp41 * tmp40) + (tmp34 * tmp47);
	    }
	    {
		 fftw_real tmp49;
		 fftw_real tmp51;
		 fftw_real tmp48;
		 fftw_real tmp50;
		 tmp49 = tmp39 + tmp35;
		 tmp51 = tmp42 + tmp46;
		 tmp48 = c_re (W[2]);
		 tmp50 = c_im (W[2]);
		 Y[-3 * iostride] = (tmp48 * tmp49) - (tmp50 * tmp51);
		 X[3 * iostride] = (tmp50 * tmp49) + (tmp48 * tmp51);
	    }
	    {
		 fftw_real tmp55;
		 fftw_real tmp59;
		 fftw_real tmp52;
		 fftw_real tmp56;
		 tmp55 = tmp53 + tmp54;
		 tmp59 = tmp57 - tmp58;
		 tmp52 = c_re (W[0]);
		 tmp56 = c_im (W[0]);
		 Y[-5 * iostride] = (tmp52 * tmp55) - (tmp56 * tmp59);
		 X[iostride] = (tmp56 * tmp55) + (tmp52 * tmp59);
	    }
       }
     if (i == m)
       {
	    fftw_real tmp9;
	    fftw_real tmp13;
	    fftw_real tmp11;
	    fftw_real tmp1;
	    fftw_real tmp4;
	    fftw_real tmp2;
	    fftw_real tmp3;
	    fftw_real tmp5;
	    fftw_real tmp12;
	    fftw_real tmp10;
	    fftw_real tmp6;
	    fftw_real tmp8;
	    fftw_real tmp7;
	    tmp6 = Y[-2 * iostride];
	    tmp8 = Y[0];
	    tmp7 = Y[-iostride];
	    tmp9 =
		 (K1_563662964 * tmp6) + (K1_949855824 * tmp7) +
		 (K867767478 * tmp8);
	    tmp13 =
		 (K1_563662964 * tmp7) - (K1_949855824 * tmp8) -
		 (K867767478 * tmp6);
	    tmp11 =
		 (K1_949855824 * tmp6) - (K1_563662964 * tmp8) -
		 (K867767478 * tmp7);
	    tmp1 = X[3 * iostride];
	    tmp4 = X[0];
	    tmp2 = X[2 * iostride];
	    tmp3 = X[iostride];
	    tmp5 =
		 (K445041867 * tmp3) + (K1_801937735 * tmp4) -
		 (K1_246979603 * tmp2) - tmp1;
	    tmp12 =
		 (K1_801937735 * tmp2) + (K445041867 * tmp4) -
		 (K1_246979603 * tmp3) - tmp1;
	    tmp10 =
		 tmp1 + (K1_246979603 * tmp4) - (K1_801937735 * tmp3) -
		 (K445041867 * tmp2);
	    X[iostride] = tmp5 - tmp9;
	    X[6 * iostride] = -(tmp5 + tmp9);
	    X[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4));
	    X[4 * iostride] = tmp13 - tmp12;
	    X[3 * iostride] = tmp12 + tmp13;
	    X[5 * iostride] = tmp11 - tmp10;
	    X[2 * iostride] = tmp10 + tmp11;
       }
}


static const int twiddle_order[] = { 1, 2, 3, 4, 5, 6 };
fftw_codelet_desc fftw_hc2hc_backward_7_desc = {
     "fftw_hc2hc_backward_7",
     (void (*)()) fftw_hc2hc_backward_7,
     7,
     FFTW_BACKWARD,
     FFTW_HC2HC,
     168,
     6,
     twiddle_order,
};
