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fni_12.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 20:44:09 EST 1999 */

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

/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddleinv 12 */

/*
 * This function contains 96 FP additions, 16 FP multiplications,
 * (or, 88 additions, 8 multiplications, 8 fused multiply/add),
 * 40 stack variables, and 48 memory accesses
 */
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 1.41 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 fftwi_no_twiddle_12(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
     fftw_real tmp5;
     fftw_real tmp35;
     fftw_real tmp57;
     fftw_real tmp27;
     fftw_real tmp58;
     fftw_real tmp36;
     fftw_real tmp10;
     fftw_real tmp38;
     fftw_real tmp60;
     fftw_real tmp32;
     fftw_real tmp61;
     fftw_real tmp39;
     fftw_real tmp16;
     fftw_real tmp82;
     fftw_real tmp42;
     fftw_real tmp47;
     fftw_real tmp76;
     fftw_real tmp83;
     fftw_real tmp21;
     fftw_real tmp85;
     fftw_real tmp49;
     fftw_real tmp54;
     fftw_real tmp77;
     fftw_real tmp86;
     ASSERT_ALIGNED_DOUBLE;
     {
        fftw_real tmp1;
        fftw_real tmp2;
        fftw_real tmp3;
        fftw_real tmp4;
        ASSERT_ALIGNED_DOUBLE;
        tmp1 = c_re(input[0]);
        tmp2 = c_re(input[4 * istride]);
        tmp3 = c_re(input[8 * istride]);
        tmp4 = tmp2 + tmp3;
        tmp5 = tmp1 + tmp4;
        tmp35 = tmp1 - (K500000000 * tmp4);
        tmp57 = K866025403 * (tmp2 - tmp3);
     }
     {
        fftw_real tmp23;
        fftw_real tmp24;
        fftw_real tmp25;
        fftw_real tmp26;
        ASSERT_ALIGNED_DOUBLE;
        tmp23 = c_im(input[0]);
        tmp24 = c_im(input[4 * istride]);
        tmp25 = c_im(input[8 * istride]);
        tmp26 = tmp24 + tmp25;
        tmp27 = tmp23 + tmp26;
        tmp58 = tmp23 - (K500000000 * tmp26);
        tmp36 = K866025403 * (tmp25 - tmp24);
     }
     {
        fftw_real tmp6;
        fftw_real tmp7;
        fftw_real tmp8;
        fftw_real tmp9;
        ASSERT_ALIGNED_DOUBLE;
        tmp6 = c_re(input[6 * istride]);
        tmp7 = c_re(input[10 * istride]);
        tmp8 = c_re(input[2 * istride]);
        tmp9 = tmp7 + tmp8;
        tmp10 = tmp6 + tmp9;
        tmp38 = tmp6 - (K500000000 * tmp9);
        tmp60 = K866025403 * (tmp7 - tmp8);
     }
     {
        fftw_real tmp28;
        fftw_real tmp29;
        fftw_real tmp30;
        fftw_real tmp31;
        ASSERT_ALIGNED_DOUBLE;
        tmp28 = c_im(input[6 * istride]);
        tmp29 = c_im(input[10 * istride]);
        tmp30 = c_im(input[2 * istride]);
        tmp31 = tmp29 + tmp30;
        tmp32 = tmp28 + tmp31;
        tmp61 = tmp28 - (K500000000 * tmp31);
        tmp39 = K866025403 * (tmp30 - tmp29);
     }
     {
        fftw_real tmp12;
        fftw_real tmp13;
        fftw_real tmp14;
        fftw_real tmp15;
        ASSERT_ALIGNED_DOUBLE;
        tmp12 = c_re(input[3 * istride]);
        tmp13 = c_re(input[7 * istride]);
        tmp14 = c_re(input[11 * istride]);
        tmp15 = tmp13 + tmp14;
        tmp16 = tmp12 + tmp15;
        tmp82 = tmp12 - (K500000000 * tmp15);
        tmp42 = K866025403 * (tmp13 - tmp14);
     }
     {
        fftw_real tmp43;
        fftw_real tmp44;
        fftw_real tmp45;
        fftw_real tmp46;
        ASSERT_ALIGNED_DOUBLE;
        tmp43 = c_im(input[3 * istride]);
        tmp44 = c_im(input[7 * istride]);
        tmp45 = c_im(input[11 * istride]);
        tmp46 = tmp44 + tmp45;
        tmp47 = tmp43 - (K500000000 * tmp46);
        tmp76 = tmp43 + tmp46;
        tmp83 = K866025403 * (tmp45 - tmp44);
     }
     {
        fftw_real tmp17;
        fftw_real tmp18;
        fftw_real tmp19;
        fftw_real tmp20;
        ASSERT_ALIGNED_DOUBLE;
        tmp17 = c_re(input[9 * istride]);
        tmp18 = c_re(input[istride]);
        tmp19 = c_re(input[5 * istride]);
        tmp20 = tmp18 + tmp19;
        tmp21 = tmp17 + tmp20;
        tmp85 = tmp17 - (K500000000 * tmp20);
        tmp49 = K866025403 * (tmp18 - tmp19);
     }
     {
        fftw_real tmp50;
        fftw_real tmp51;
        fftw_real tmp52;
        fftw_real tmp53;
        ASSERT_ALIGNED_DOUBLE;
        tmp50 = c_im(input[9 * istride]);
        tmp51 = c_im(input[istride]);
        tmp52 = c_im(input[5 * istride]);
        tmp53 = tmp51 + tmp52;
        tmp54 = tmp50 - (K500000000 * tmp53);
        tmp77 = tmp50 + tmp53;
        tmp86 = K866025403 * (tmp52 - tmp51);
     }
     {
        fftw_real tmp11;
        fftw_real tmp22;
        fftw_real tmp33;
        fftw_real tmp34;
        ASSERT_ALIGNED_DOUBLE;
        tmp11 = tmp5 + tmp10;
        tmp22 = tmp16 + tmp21;
        c_re(output[6 * ostride]) = tmp11 - tmp22;
        c_re(output[0]) = tmp11 + tmp22;
        {
             fftw_real tmp75;
             fftw_real tmp78;
             fftw_real tmp79;
             fftw_real tmp80;
             ASSERT_ALIGNED_DOUBLE;
             tmp75 = tmp5 - tmp10;
             tmp78 = tmp76 - tmp77;
             c_re(output[9 * ostride]) = tmp75 - tmp78;
             c_re(output[3 * ostride]) = tmp75 + tmp78;
             tmp79 = tmp27 + tmp32;
             tmp80 = tmp76 + tmp77;
             c_im(output[6 * ostride]) = tmp79 - tmp80;
             c_im(output[0]) = tmp79 + tmp80;
        }
        tmp33 = tmp27 - tmp32;
        tmp34 = tmp16 - tmp21;
        c_im(output[3 * ostride]) = tmp33 - tmp34;
        c_im(output[9 * ostride]) = tmp34 + tmp33;
        {
             fftw_real tmp67;
             fftw_real tmp89;
             fftw_real tmp88;
             fftw_real tmp90;
             fftw_real tmp70;
             fftw_real tmp74;
             fftw_real tmp73;
             fftw_real tmp81;
             ASSERT_ALIGNED_DOUBLE;
             {
                fftw_real tmp65;
                fftw_real tmp66;
                fftw_real tmp84;
                fftw_real tmp87;
                ASSERT_ALIGNED_DOUBLE;
                tmp65 = tmp35 - tmp36;
                tmp66 = tmp38 - tmp39;
                tmp67 = tmp65 - tmp66;
                tmp89 = tmp65 + tmp66;
                tmp84 = tmp82 - tmp83;
                tmp87 = tmp85 - tmp86;
                tmp88 = tmp84 - tmp87;
                tmp90 = tmp84 + tmp87;
             }
             {
                fftw_real tmp68;
                fftw_real tmp69;
                fftw_real tmp71;
                fftw_real tmp72;
                ASSERT_ALIGNED_DOUBLE;
                tmp68 = tmp47 - tmp42;
                tmp69 = tmp54 - tmp49;
                tmp70 = tmp68 - tmp69;
                tmp74 = tmp68 + tmp69;
                tmp71 = tmp58 - tmp57;
                tmp72 = tmp61 - tmp60;
                tmp73 = tmp71 + tmp72;
                tmp81 = tmp71 - tmp72;
             }
             c_re(output[5 * ostride]) = tmp67 - tmp70;
             c_re(output[11 * ostride]) = tmp67 + tmp70;
             c_im(output[2 * ostride]) = tmp73 - tmp74;
             c_im(output[8 * ostride]) = tmp73 + tmp74;
             c_im(output[11 * ostride]) = tmp81 - tmp88;
             c_im(output[5 * ostride]) = tmp81 + tmp88;
             c_re(output[2 * ostride]) = tmp89 - tmp90;
             c_re(output[8 * ostride]) = tmp89 + tmp90;
        }
        {
             fftw_real tmp41;
             fftw_real tmp95;
             fftw_real tmp94;
             fftw_real tmp96;
             fftw_real tmp56;
             fftw_real tmp64;
             fftw_real tmp63;
             fftw_real tmp91;
             ASSERT_ALIGNED_DOUBLE;
             {
                fftw_real tmp37;
                fftw_real tmp40;
                fftw_real tmp92;
                fftw_real tmp93;
                ASSERT_ALIGNED_DOUBLE;
                tmp37 = tmp35 + tmp36;
                tmp40 = tmp38 + tmp39;
                tmp41 = tmp37 - tmp40;
                tmp95 = tmp37 + tmp40;
                tmp92 = tmp82 + tmp83;
                tmp93 = tmp85 + tmp86;
                tmp94 = tmp92 - tmp93;
                tmp96 = tmp92 + tmp93;
             }
             {
                fftw_real tmp48;
                fftw_real tmp55;
                fftw_real tmp59;
                fftw_real tmp62;
                ASSERT_ALIGNED_DOUBLE;
                tmp48 = tmp42 + tmp47;
                tmp55 = tmp49 + tmp54;
                tmp56 = tmp48 - tmp55;
                tmp64 = tmp48 + tmp55;
                tmp59 = tmp57 + tmp58;
                tmp62 = tmp60 + tmp61;
                tmp63 = tmp59 + tmp62;
                tmp91 = tmp59 - tmp62;
             }
             c_re(output[ostride]) = tmp41 - tmp56;
             c_re(output[7 * ostride]) = tmp41 + tmp56;
             c_im(output[10 * ostride]) = tmp63 - tmp64;
             c_im(output[4 * ostride]) = tmp63 + tmp64;
             c_im(output[7 * ostride]) = tmp91 - tmp94;
             c_im(output[ostride]) = tmp91 + tmp94;
             c_re(output[10 * ostride]) = tmp95 - tmp96;
             c_re(output[4 * ostride]) = tmp95 + tmp96;
        }
     }
}

fftw_codelet_desc fftwi_no_twiddle_12_desc =
{
     "fftwi_no_twiddle_12",
     (void (*)()) fftwi_no_twiddle_12,
     12,
     FFTW_BACKWARD,
     FFTW_NOTW,
     276,
     0,
     (const int *) 0,
};

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