src/fftw/fcr_11.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 13:55:07 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 -hc2real 11 */
  27
  28 /*
  29  * This function contains 60 FP additions, 51 FP multiplications,
  30  * (or, 59 additions, 50 multiplications, 1 fused multiply/add),
  31  * 21 stack variables, and 22 memory accesses
  32  */
  33 static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
  34 static const fftw_real K1_918985947 = FFTW_KONST(+1.918985947228994779780736114132655398124909697);
  35 static const fftw_real K1_309721467 = FFTW_KONST(+1.309721467890570128113850144932587106367582399);
  36 static const fftw_real K284629676 = FFTW_KONST(+0.284629676546570280887585337232739337582102722);
  37 static const fftw_real K830830026 = FFTW_KONST(+0.830830026003772851058548298459246407048009821);
  38 static const fftw_real K1_682507065 = FFTW_KONST(+1.682507065662362337723623297838735435026584997);
  39 static const fftw_real K563465113 = FFTW_KONST(+0.563465113682859395422835830693233798071555798);
  40 static const fftw_real K1_511499148 = FFTW_KONST(+1.511499148708516567548071687944688840359434890);
  41 static const fftw_real K1_979642883 = FFTW_KONST(+1.979642883761865464752184075553437574753038744);
  42 static const fftw_real K1_819263990 = FFTW_KONST(+1.819263990709036742823430766158056920120482102);
  43 static const fftw_real K1_081281634 = FFTW_KONST(+1.081281634911195164215271908637383390863541216);
  44
  45 /*
  46  * Generator Id's :
  47  * $Id$
  48  * $Id$
  49  * $Id$
  50  */
  51
  52 void fftw_hc2real_11(const fftw_real *real_input, const fftw_real *imag_input, fftw_real *output, int real_istride, int imag_istride, int ostride)
  53 {
  54      fftw_real tmp13;
  55      fftw_real tmp21;
  56      fftw_real tmp15;
  57      fftw_real tmp17;
  58      fftw_real tmp19;
  59      fftw_real tmp1;
  60      fftw_real tmp2;
  61      fftw_real tmp6;
  62      fftw_real tmp5;
  63      fftw_real tmp4;
  64      fftw_real tmp3;
  65      fftw_real tmp7;
  66      fftw_real tmp20;
  67      fftw_real tmp14;
  68      fftw_real tmp16;
  69      fftw_real tmp18;
  70      ASSERT_ALIGNED_DOUBLE();
  71      {
  72           fftw_real tmp8;
  73           fftw_real tmp12;
  74           fftw_real tmp9;
  75           fftw_real tmp10;
  76           fftw_real tmp11;
  77           ASSERT_ALIGNED_DOUBLE();
  78           tmp8 = imag_input[2 * imag_istride];
  79           tmp12 = imag_input[imag_istride];
  80           tmp9 = imag_input[4 * imag_istride];
  81           tmp10 = imag_input[5 * imag_istride];
  82           tmp11 = imag_input[3 * imag_istride];
  83           tmp13 = (K1_081281634 * tmp8) + (K1_819263990 * tmp9) - (K1_979642883 * tmp10) - (K1_511499148 * tmp11) - (K563465113 * tmp12);
  84           tmp21 = (K1_979642883 * tmp8) + (K1_819263990 * tmp10) - (K563465113 * tmp9) - (K1_081281634 * tmp11) - (K1_511499148 * tmp12);
  85           tmp15 = (K563465113 * tmp8) + (K1_819263990 * tmp11) - (K1_511499148 * tmp10) - (K1_081281634 * tmp9) - (K1_979642883 * tmp12);
  86           tmp17 = (K1_081281634 * tmp12) + (K1_819263990 * tmp8) + (K1_979642883 * tmp11) + (K1_511499148 * tmp9) + (K563465113 * tmp10);
  87           tmp19 = (K563465113 * tmp11) + (K1_979642883 * tmp9) + (K1_081281634 * tmp10) - (K1_511499148 * tmp8) - (K1_819263990 * tmp12);
  88      }
  89      tmp1 = real_input[0];
  90      tmp2 = real_input[real_istride];
  91      tmp6 = real_input[5 * real_istride];
  92      tmp5 = real_input[4 * real_istride];
  93      tmp4 = real_input[3 * real_istride];
  94      tmp3 = real_input[2 * real_istride];
  95      tmp7 = tmp1 + (K1_682507065 * tmp3) + (K830830026 * tmp5) - (K284629676 * tmp6) - (K1_309721467 * tmp4) - (K1_918985947 * tmp2);
  96      tmp20 = tmp1 + (K1_682507065 * tmp4) + (K830830026 * tmp6) - (K1_918985947 * tmp5) - (K284629676 * tmp3) - (K1_309721467 * tmp2);
  97      tmp14 = tmp1 + (K830830026 * tmp4) + (K1_682507065 * tmp5) - (K1_309721467 * tmp6) - (K1_918985947 * tmp3) - (K284629676 * tmp2);
  98      tmp16 = tmp1 + (K1_682507065 * tmp2) + (K830830026 * tmp3) - (K1_918985947 * tmp6) - (K1_309721467 * tmp5) - (K284629676 * tmp4);
  99      tmp18 = tmp1 + (K830830026 * tmp2) + (K1_682507065 * tmp6) - (K284629676 * tmp5) - (K1_918985947 * tmp4) - (K1_309721467 * tmp3);
 100      output[6 * ostride] = tmp7 - tmp13;
 101      output[5 * ostride] = tmp7 + tmp13;
 102      output[7 * ostride] = tmp20 - tmp21;
 103      output[4 * ostride] = tmp20 + tmp21;
 104      output[0] = tmp1 + (K2_000000000 * (tmp2 + tmp3 + tmp4 + tmp5 + tmp6));
 105      output[2 * ostride] = tmp18 + tmp19;
 106      output[9 * ostride] = tmp18 - tmp19;
 107      output[10 * ostride] = tmp16 + tmp17;
 108      output[ostride] = tmp16 - tmp17;
 109      output[8 * ostride] = tmp14 - tmp15;
 110      output[3 * ostride] = tmp14 + tmp15;
 111 }
 112
 113 fftw_codelet_desc fftw_hc2real_11_desc =
 114 {
 115      "fftw_hc2real_11",
 116      (void (*)()) fftw_hc2real_11,
 117      11,
 118      FFTW_BACKWARD,
 119      FFTW_HC2REAL,
 120      257,
 121      0,
 122      (const int *) 0,
 123 };