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ftw_5.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 20:44:31 EST 1999 */

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

/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -twiddle 5 */

/*
 * This function contains 40 FP additions, 28 FP multiplications,
 * (or, 26 additions, 14 multiplications, 14 fused multiply/add),
 * 26 stack variables, and 20 memory accesses
 */
static const fftw_real K250000000 = FFTW_KONST(+0.250000000000000000000000000000000000000000000);
static const fftw_real K559016994 = FFTW_KONST(+0.559016994374947424102293417182819058860154590);
static const fftw_real K587785252 = FFTW_KONST(+0.587785252292473129168705954639072768597652438);
static const fftw_real K951056516 = FFTW_KONST(+0.951056516295153572116439333379382143405698634);

/*
 * 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_twiddle_5(fftw_complex *A, const fftw_complex *W, int iostride, int m, int dist)
{
     int i;
     fftw_complex *inout;
     inout = A;
     for (i = m; i > 0; i = i - 1, inout = inout + dist, W = W + 4) {
        fftw_real tmp1;
        fftw_real tmp40;
        fftw_real tmp30;
        fftw_real tmp33;
        fftw_real tmp37;
        fftw_real tmp38;
        fftw_real tmp39;
        fftw_real tmp45;
        fftw_real tmp44;
        fftw_real tmp12;
        fftw_real tmp23;
        fftw_real tmp24;
        ASSERT_ALIGNED_DOUBLE;
        tmp1 = c_re(inout[0]);
        tmp40 = c_im(inout[0]);
        {
             fftw_real tmp6;
             fftw_real tmp28;
             fftw_real tmp22;
             fftw_real tmp32;
             fftw_real tmp11;
             fftw_real tmp29;
             fftw_real tmp17;
             fftw_real tmp31;
             ASSERT_ALIGNED_DOUBLE;
             {
                fftw_real tmp3;
                fftw_real tmp5;
                fftw_real tmp2;
                fftw_real tmp4;
                ASSERT_ALIGNED_DOUBLE;
                tmp3 = c_re(inout[iostride]);
                tmp5 = c_im(inout[iostride]);
                tmp2 = c_re(W[0]);
                tmp4 = c_im(W[0]);
                tmp6 = (tmp2 * tmp3) - (tmp4 * tmp5);
                tmp28 = (tmp4 * tmp3) + (tmp2 * tmp5);
             }
             {
                fftw_real tmp19;
                fftw_real tmp21;
                fftw_real tmp18;
                fftw_real tmp20;
                ASSERT_ALIGNED_DOUBLE;
                tmp19 = c_re(inout[3 * iostride]);
                tmp21 = c_im(inout[3 * iostride]);
                tmp18 = c_re(W[2]);
                tmp20 = c_im(W[2]);
                tmp22 = (tmp18 * tmp19) - (tmp20 * tmp21);
                tmp32 = (tmp20 * tmp19) + (tmp18 * tmp21);
             }
             {
                fftw_real tmp8;
                fftw_real tmp10;
                fftw_real tmp7;
                fftw_real tmp9;
                ASSERT_ALIGNED_DOUBLE;
                tmp8 = c_re(inout[4 * iostride]);
                tmp10 = c_im(inout[4 * iostride]);
                tmp7 = c_re(W[3]);
                tmp9 = c_im(W[3]);
                tmp11 = (tmp7 * tmp8) - (tmp9 * tmp10);
                tmp29 = (tmp9 * tmp8) + (tmp7 * tmp10);
             }
             {
                fftw_real tmp14;
                fftw_real tmp16;
                fftw_real tmp13;
                fftw_real tmp15;
                ASSERT_ALIGNED_DOUBLE;
                tmp14 = c_re(inout[2 * iostride]);
                tmp16 = c_im(inout[2 * iostride]);
                tmp13 = c_re(W[1]);
                tmp15 = c_im(W[1]);
                tmp17 = (tmp13 * tmp14) - (tmp15 * tmp16);
                tmp31 = (tmp15 * tmp14) + (tmp13 * tmp16);
             }
             tmp30 = tmp28 - tmp29;
             tmp33 = tmp31 - tmp32;
             tmp37 = tmp28 + tmp29;
             tmp38 = tmp31 + tmp32;
             tmp39 = tmp37 + tmp38;
             tmp45 = tmp17 - tmp22;
             tmp44 = tmp6 - tmp11;
             tmp12 = tmp6 + tmp11;
             tmp23 = tmp17 + tmp22;
             tmp24 = tmp12 + tmp23;
        }
        c_re(inout[0]) = tmp1 + tmp24;
        {
             fftw_real tmp34;
             fftw_real tmp36;
             fftw_real tmp27;
             fftw_real tmp35;
             fftw_real tmp25;
             fftw_real tmp26;
             ASSERT_ALIGNED_DOUBLE;
             tmp34 = (K951056516 * tmp30) + (K587785252 * tmp33);
             tmp36 = (K951056516 * tmp33) - (K587785252 * tmp30);
             tmp25 = K559016994 * (tmp12 - tmp23);
             tmp26 = tmp1 - (K250000000 * tmp24);
             tmp27 = tmp25 + tmp26;
             tmp35 = tmp26 - tmp25;
             c_re(inout[4 * iostride]) = tmp27 - tmp34;
             c_re(inout[iostride]) = tmp27 + tmp34;
             c_re(inout[2 * iostride]) = tmp35 - tmp36;
             c_re(inout[3 * iostride]) = tmp35 + tmp36;
        }
        c_im(inout[0]) = tmp39 + tmp40;
        {
             fftw_real tmp46;
             fftw_real tmp47;
             fftw_real tmp43;
             fftw_real tmp48;
             fftw_real tmp41;
             fftw_real tmp42;
             ASSERT_ALIGNED_DOUBLE;
             tmp46 = (K951056516 * tmp44) + (K587785252 * tmp45);
             tmp47 = (K951056516 * tmp45) - (K587785252 * tmp44);
             tmp41 = K559016994 * (tmp37 - tmp38);
             tmp42 = tmp40 - (K250000000 * tmp39);
             tmp43 = tmp41 + tmp42;
             tmp48 = tmp42 - tmp41;
             c_im(inout[iostride]) = tmp43 - tmp46;
             c_im(inout[4 * iostride]) = tmp46 + tmp43;
             c_im(inout[2 * iostride]) = tmp47 + tmp48;
             c_im(inout[3 * iostride]) = tmp48 - tmp47;
        }
     }
}

static const int twiddle_order[] =
{1, 2, 3, 4};
fftw_codelet_desc fftw_twiddle_5_desc =
{
     "fftw_twiddle_5",
     (void (*)()) fftw_twiddle_5,
     5,
     FFTW_FORWARD,
     FFTW_TWIDDLE,
     110,
     4,
     twiddle_order,
};

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