frc_13.c

FFTW, a collection of fast C routines to compute the Discrete Fourier Transform in one or more dime

/*
 * Copyright (c) 1997-1999, 2003 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 Mon Mar 24 02:05:59 EST 2003 */

#include "fftw-int.h"
#include "fftw.h"

/* Generated by: /homee/stevenj/cvs/fftw/gensrc/genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 13 */

/*
 * This function contains 76 FP additions, 34 FP multiplications,
 * (or, 57 additions, 15 multiplications, 19 fused multiply/add),
 * 34 stack variables, and 26 memory accesses
 */
static const fftw_real K083333333 =
FFTW_KONST(+0.083333333333333333333333333333333333333333333);
static const fftw_real K075902986 =
FFTW_KONST(+0.075902986037193865983102897245103540356428373);
static const fftw_real K251768516 =
FFTW_KONST(+0.251768516431883313623436926934233488546674281);
static const fftw_real K503537032 =
FFTW_KONST(+0.503537032863766627246873853868466977093348562);
static const fftw_real K113854479 =
FFTW_KONST(+0.113854479055790798974654345867655310534642560);
static const fftw_real K265966249 =
FFTW_KONST(+0.265966249214837287587521063842185948798330267);
static const fftw_real K387390585 =
FFTW_KONST(+0.387390585467617292130675966426762851778775217);
static const fftw_real K300462606 =
FFTW_KONST(+0.300462606288665774426601772289207995520941381);
static const fftw_real K258260390 =
FFTW_KONST(+0.258260390311744861420450644284508567852516811);
static const fftw_real K132983124 =
FFTW_KONST(+0.132983124607418643793760531921092974399165133);
static const fftw_real K2_000000000 =
FFTW_KONST(+2.000000000000000000000000000000000000000000000);
static const fftw_real K1_732050807 =
FFTW_KONST(+1.732050807568877293527446341505872366942805254);
static const fftw_real K156891391 =
FFTW_KONST(+0.156891391051584611046832726756003269660212636);
static const fftw_real K256247671 =
FFTW_KONST(+0.256247671582936600958684654061725059144125175);
static const fftw_real K011599105 =
FFTW_KONST(+0.011599105605768290721655456654083252189827041);
static const fftw_real K300238635 =
FFTW_KONST(+0.300238635966332641462884626667381504676006424);
static const fftw_real K174138601 =
FFTW_KONST(+0.174138601152135905005660794929264742616964676);
static const fftw_real K575140729 =
FFTW_KONST(+0.575140729474003121368385547455453388461001608);
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 1.43 2003/03/16 23:43:46 stevenj Exp $
 * $Id: fft.ml,v 1.44 2003/03/16 23:43:46 stevenj Exp $
 * $Id: to_c.ml,v 1.26 2003/03/16 23:43:46 stevenj Exp $
 */

void fftw_real2hc_13(const fftw_real *input, fftw_real *real_output,
		     fftw_real *imag_output, int istride, int real_ostride,
		     int imag_ostride)
{
     fftw_real tmp65;
     fftw_real tmp36;
     fftw_real tmp19;
     fftw_real tmp32;
     fftw_real tmp51;
     fftw_real tmp62;
     fftw_real tmp39;
     fftw_real tmp58;
     fftw_real tmp59;
     fftw_real tmp66;
     fftw_real tmp56;
     fftw_real tmp63;
     fftw_real tmp30;
     fftw_real tmp33;
     ASSERT_ALIGNED_DOUBLE;
     tmp65 = input[0];
     {
	  fftw_real tmp3;
	  fftw_real tmp53;
	  fftw_real tmp17;
	  fftw_real tmp38;
	  fftw_real tmp28;
	  fftw_real tmp14;
	  fftw_real tmp37;
	  fftw_real tmp25;
	  fftw_real tmp6;
	  fftw_real tmp20;
	  fftw_real tmp9;
	  fftw_real tmp21;
	  fftw_real tmp10;
	  fftw_real tmp54;
	  fftw_real tmp1;
	  fftw_real tmp2;
	  ASSERT_ALIGNED_DOUBLE;
	  tmp1 = input[8 * istride];
	  tmp2 = input[5 * istride];
	  tmp3 = tmp1 - tmp2;
	  tmp53 = tmp1 + tmp2;
	  {
	       fftw_real tmp26;
	       fftw_real tmp15;
	       fftw_real tmp16;
	       fftw_real tmp27;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp26 = input[12 * istride];
	       tmp15 = input[4 * istride];
	       tmp16 = input[10 * istride];
	       tmp27 = tmp15 + tmp16;
	       tmp17 = tmp15 - tmp16;
	       tmp38 = tmp26 + tmp27;
	       tmp28 = tmp26 - (K500000000 * tmp27);
	  }
	  {
	       fftw_real tmp23;
	       fftw_real tmp12;
	       fftw_real tmp13;
	       fftw_real tmp24;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp23 = input[istride];
	       tmp12 = input[3 * istride];
	       tmp13 = input[9 * istride];
	       tmp24 = tmp12 + tmp13;
	       tmp14 = tmp12 - tmp13;
	       tmp37 = tmp23 + tmp24;
	       tmp25 = tmp23 - (K500000000 * tmp24);
	  }
	  {
	       fftw_real tmp4;
	       fftw_real tmp5;
	       fftw_real tmp7;
	       fftw_real tmp8;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp4 = input[6 * istride];
	       tmp5 = input[11 * istride];
	       tmp6 = tmp4 - tmp5;
	       tmp20 = tmp4 + tmp5;
	       tmp7 = input[2 * istride];
	       tmp8 = input[7 * istride];
	       tmp9 = tmp7 - tmp8;
	       tmp21 = tmp7 + tmp8;
	  }
	  tmp10 = tmp6 + tmp9;
	  tmp54 = tmp20 + tmp21;
	  tmp36 = tmp3 - tmp10;
	  {
	       fftw_real tmp11;
	       fftw_real tmp18;
	       fftw_real tmp49;
	       fftw_real tmp50;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp11 = tmp3 + (K500000000 * tmp10);
	       tmp18 = K866025403 * (tmp14 + tmp17);
	       tmp19 = tmp11 - tmp18;
	       tmp32 = tmp11 + tmp18;
	       tmp49 = tmp9 - tmp6;
	       tmp50 = tmp14 - tmp17;
	       tmp51 = tmp49 - tmp50;
	       tmp62 = tmp49 + tmp50;
	  }
	  tmp39 = tmp37 - tmp38;
	  tmp58 = tmp37 + tmp38;
	  tmp59 = tmp53 + tmp54;
	  tmp66 = tmp59 + tmp58;
	  {
	       fftw_real tmp52;
	       fftw_real tmp55;
	       fftw_real tmp22;
	       fftw_real tmp29;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp52 = tmp25 + tmp28;
	       tmp55 = tmp53 - (K500000000 * tmp54);
	       tmp56 = tmp52 - tmp55;
	       tmp63 = tmp55 + tmp52;
	       tmp22 = K866025403 * (tmp20 - tmp21);
	       tmp29 = tmp25 - tmp28;
	       tmp30 = tmp22 + tmp29;
	       tmp33 = tmp29 - tmp22;
	  }
     }
     real_output[0] = tmp66 + tmp65;
     {
	  fftw_real tmp40;
	  fftw_real tmp46;
	  fftw_real tmp35;
	  fftw_real tmp48;
	  fftw_real tmp43;
	  fftw_real tmp45;
	  fftw_real tmp44;
	  fftw_real tmp47;
	  ASSERT_ALIGNED_DOUBLE;
	  tmp40 = (K575140729 * tmp36) - (K174138601 * tmp39);
	  tmp46 = (K174138601 * tmp36) + (K575140729 * tmp39);
	  {
	       fftw_real tmp31;
	       fftw_real tmp34;
	       fftw_real tmp41;
	       fftw_real tmp42;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp31 = (K300238635 * tmp19) + (K011599105 * tmp30);
	       tmp34 = (K256247671 * tmp32) + (K156891391 * tmp33);
	       tmp35 = tmp31 - tmp34;
	       tmp48 = K1_732050807 * (tmp31 + tmp34);
	       tmp41 = (K300238635 * tmp30) - (K011599105 * tmp19);
	       tmp42 = (K156891391 * tmp32) - (K256247671 * tmp33);
	       tmp43 = K1_732050807 * (tmp41 - tmp42);
	       tmp45 = tmp41 + tmp42;
	  }
	  imag_output[imag_ostride] = (K2_000000000 * tmp35) + tmp40;
	  tmp44 = tmp40 - tmp35;
	  imag_output[4 * imag_ostride] = -(tmp43 + tmp44);
	  imag_output[3 * imag_ostride] = tmp44 - tmp43;
	  imag_output[5 * imag_ostride] =
	      -((K2_000000000 * tmp45) + tmp46);
	  tmp47 = tmp45 - tmp46;
	  imag_output[2 * imag_ostride] = tmp47 - tmp48;
	  imag_output[6 * imag_ostride] = tmp48 + tmp47;
     }
     {
	  fftw_real tmp61;
	  fftw_real tmp70;
	  fftw_real tmp74;
	  fftw_real tmp76;
	  fftw_real tmp68;
	  fftw_real tmp69;
	  fftw_real tmp57;
	  fftw_real tmp60;
	  fftw_real tmp71;
	  fftw_real tmp75;
	  ASSERT_ALIGNED_DOUBLE;
	  tmp57 = (K132983124 * tmp51) + (K258260390 * tmp56);
	  tmp60 = K300462606 * (tmp58 - tmp59);
	  tmp61 = (K2_000000000 * tmp57) + tmp60;
	  tmp70 = tmp60 - tmp57;
	  {
	       fftw_real tmp72;
	       fftw_real tmp73;
	       fftw_real tmp64;
	       fftw_real tmp67;
	       ASSERT_ALIGNED_DOUBLE;
	       tmp72 = (K387390585 * tmp51) - (K265966249 * tmp56);
	       tmp73 = (K113854479 * tmp62) - (K503537032 * tmp63);
	       tmp74 = tmp72 + tmp73;
	       tmp76 = tmp73 - tmp72;
	       tmp64 = (K251768516 * tmp62) + (K075902986 * tmp63);
	       tmp67 = tmp65 - (K083333333 * tmp66);
	       tmp68 = (K2_000000000 * tmp64) + tmp67;
	       tmp69 = tmp67 - tmp64;
	  }
	  real_output[real_ostride] = tmp61 + tmp68;
	  real_output[5 * real_ostride] = tmp68 - tmp61;
	  tmp71 = tmp69 - tmp70;
	  real_output[2 * real_ostride] = tmp71 - tmp74;
	  real_output[6 * real_ostride] = tmp74 + tmp71;
	  tmp75 = tmp70 + tmp69;
	  real_output[3 * real_ostride] = tmp75 - tmp76;
	  real_output[4 * real_ostride] = tmp76 + tmp75;
     }
}

fftw_codelet_desc fftw_real2hc_13_desc = {
     "fftw_real2hc_13",
     (void (*)()) fftw_real2hc_13,
     13,
     FFTW_FORWARD,
     FFTW_REAL2HC,
     288,
     0,
     (const int *) 0,
};