src/fftw/fn_7.c

   1 /*
   2  * Copyright (c) 1997-1999 Massachusetts Institute of Technology
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19
  20 /* This file was automatically generated --- DO NOT EDIT */
  21 /* Generated on Tue May 18 13:54:27 EDT 1999 */
  22
  23 #include <fftw-int.h>
  24 #include <fftw.h>
  25
  26 /* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddle 7 */
  27
  28 /*
  29  * This function contains 60 FP additions, 36 FP multiplications,
  30  * (or, 60 additions, 36 multiplications, 0 fused multiply/add),
  31  * 22 stack variables, and 28 memory accesses
  32  */
  33 static const fftw_real K222520933 = FFTW_KONST(+0.222520933956314404288902564496794759466355569);
  34 static const fftw_real K900968867 = FFTW_KONST(+0.900968867902419126236102319507445051165919162);
  35 static const fftw_real K623489801 = FFTW_KONST(+0.623489801858733530525004884004239810632274731);
  36 static const fftw_real K433883739 = FFTW_KONST(+0.433883739117558120475768332848358754609990728);
  37 static const fftw_real K974927912 = FFTW_KONST(+0.974927912181823607018131682993931217232785801);
  38 static const fftw_real K781831482 = FFTW_KONST(+0.781831482468029808708444526674057750232334519);
  39
  40 /*
  41  * Generator Id's :
  42  * $Id$
  43  * $Id$
  44  * $Id$
  45  */
  46
  47 void fftw_no_twiddle_7(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
  48 {
  49      fftw_real tmp1;
  50      fftw_real tmp30;
  51      fftw_real tmp4;
  52      fftw_real tmp26;
  53      fftw_real tmp14;
  54      fftw_real tmp33;
  55      fftw_real tmp7;
  56      fftw_real tmp28;
  57      fftw_real tmp20;
  58      fftw_real tmp31;
  59      fftw_real tmp10;
  60      fftw_real tmp27;
  61      fftw_real tmp17;
  62      fftw_real tmp32;
  63      ASSERT_ALIGNED_DOUBLE();
  64      tmp1 = c_re(input[0]);
  65      tmp30 = c_im(input[0]);
  66      {
  67           fftw_real tmp2;
  68           fftw_real tmp3;
  69           fftw_real tmp12;
  70           fftw_real tmp13;
  71           ASSERT_ALIGNED_DOUBLE();
  72           tmp2 = c_re(input[istride]);
  73           tmp3 = c_re(input[6 * istride]);
  74           tmp4 = tmp2 + tmp3;
  75           tmp26 = tmp3 - tmp2;
  76           tmp12 = c_im(input[istride]);
  77           tmp13 = c_im(input[6 * istride]);
  78           tmp14 = tmp12 - tmp13;
  79           tmp33 = tmp12 + tmp13;
  80      }
  81      {
  82           fftw_real tmp5;
  83           fftw_real tmp6;
  84           fftw_real tmp18;
  85           fftw_real tmp19;
  86           ASSERT_ALIGNED_DOUBLE();
  87           tmp5 = c_re(input[2 * istride]);
  88           tmp6 = c_re(input[5 * istride]);
  89           tmp7 = tmp5 + tmp6;
  90           tmp28 = tmp6 - tmp5;
  91           tmp18 = c_im(input[2 * istride]);
  92           tmp19 = c_im(input[5 * istride]);
  93           tmp20 = tmp18 - tmp19;
  94           tmp31 = tmp18 + tmp19;
  95      }
  96      {
  97           fftw_real tmp8;
  98           fftw_real tmp9;
  99           fftw_real tmp15;
 100           fftw_real tmp16;
 101           ASSERT_ALIGNED_DOUBLE();
 102           tmp8 = c_re(input[3 * istride]);
 103           tmp9 = c_re(input[4 * istride]);
 104           tmp10 = tmp8 + tmp9;
 105           tmp27 = tmp9 - tmp8;
 106           tmp15 = c_im(input[3 * istride]);
 107           tmp16 = c_im(input[4 * istride]);
 108           tmp17 = tmp15 - tmp16;
 109           tmp32 = tmp15 + tmp16;
 110      }
 111      {
 112           fftw_real tmp23;
 113           fftw_real tmp22;
 114           fftw_real tmp35;
 115           fftw_real tmp36;
 116           ASSERT_ALIGNED_DOUBLE();
 117           c_re(output[0]) = tmp1 + tmp4 + tmp7 + tmp10;
 118           tmp23 = (K781831482 * tmp14) + (K974927912 * tmp20) + (K433883739 * tmp17);
 119           tmp22 = tmp1 + (K623489801 * tmp4) - (K900968867 * tmp10) - (K222520933 * tmp7);
 120           c_re(output[6 * ostride]) = tmp22 - tmp23;
 121           c_re(output[ostride]) = tmp22 + tmp23;
 122           {
 123                fftw_real tmp25;
 124                fftw_real tmp24;
 125                fftw_real tmp21;
 126                fftw_real tmp11;
 127                ASSERT_ALIGNED_DOUBLE();
 128                tmp25 = (K433883739 * tmp14) + (K974927912 * tmp17) - (K781831482 * tmp20);
 129                tmp24 = tmp1 + (K623489801 * tmp7) - (K222520933 * tmp10) - (K900968867 * tmp4);
 130                c_re(output[4 * ostride]) = tmp24 - tmp25;
 131                c_re(output[3 * ostride]) = tmp24 + tmp25;
 132                tmp21 = (K974927912 * tmp14) - (K781831482 * tmp17) - (K433883739 * tmp20);
 133                tmp11 = tmp1 + (K623489801 * tmp10) - (K900968867 * tmp7) - (K222520933 * tmp4);
 134                c_re(output[5 * ostride]) = tmp11 - tmp21;
 135                c_re(output[2 * ostride]) = tmp11 + tmp21;
 136           }
 137           c_im(output[0]) = tmp30 + tmp33 + tmp31 + tmp32;
 138           tmp35 = (K781831482 * tmp26) + (K974927912 * tmp28) + (K433883739 * tmp27);
 139           tmp36 = tmp30 + (K623489801 * tmp33) - (K900968867 * tmp32) - (K222520933 * tmp31);
 140           c_im(output[ostride]) = tmp35 + tmp36;
 141           c_im(output[6 * ostride]) = tmp36 - tmp35;
 142           {
 143                fftw_real tmp29;
 144                fftw_real tmp34;
 145                fftw_real tmp37;
 146                fftw_real tmp38;
 147                ASSERT_ALIGNED_DOUBLE();
 148                tmp29 = (K433883739 * tmp26) + (K974927912 * tmp27) - (K781831482 * tmp28);
 149                tmp34 = tmp30 + (K623489801 * tmp31) - (K222520933 * tmp32) - (K900968867 * tmp33);
 150                c_im(output[3 * ostride]) = tmp29 + tmp34;
 151                c_im(output[4 * ostride]) = tmp34 - tmp29;
 152                tmp37 = (K974927912 * tmp26) - (K781831482 * tmp27) - (K433883739 * tmp28);
 153                tmp38 = tmp30 + (K623489801 * tmp32) - (K900968867 * tmp31) - (K222520933 * tmp33);
 154                c_im(output[2 * ostride]) = tmp37 + tmp38;
 155                c_im(output[5 * ostride]) = tmp38 - tmp37;
 156           }
 157      }
 158 }
 159
 160 fftw_codelet_desc fftw_no_twiddle_7_desc =
 161 {
 162      "fftw_no_twiddle_7",
 163      (void (*)()) fftw_no_twiddle_7,
 164      7,
 165      FFTW_FORWARD,
 166      FFTW_NOTW,
 167      155,
 168      0,
 169      (const int *) 0,
 170 };