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fhf_7.c

/*
 * 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 Sun Nov  7 20:44:46 EST 1999 */

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

/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-forward 7 */

/*
 * This function contains 120 FP additions, 96 FP multiplications,
 * (or, 108 additions, 84 multiplications, 12 fused multiply/add),
 * 25 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 K433883739 = FFTW_KONST(+0.433883739117558120475768332848358754609990728);
static const fftw_real K974927912 = FFTW_KONST(+0.974927912181823607018131682993931217232785801);
static const fftw_real K781831482 = FFTW_KONST(+0.781831482468029808708444526674057750232334519);

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

static const int twiddle_order[] =
{1, 2, 3, 4, 5, 6};
fftw_codelet_desc fftw_hc2hc_forward_7_desc =
{
     "fftw_hc2hc_forward_7",
     (void (*)()) fftw_hc2hc_forward_7,
     7,
     FFTW_FORWARD,
     FFTW_HC2HC,
     157,
     6,
     twiddle_order,
};

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