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/*
* 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 Tue May 18 13:54:36 EDT 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 12 */
/*
* This function contains 38 FP additions, 8 FP multiplications,
* (or, 34 additions, 4 multiplications, 4 fused multiply/add),
* 18 stack variables, and 24 memory accesses
*/
static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627);
static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
/*
* Generator Id's :
* $Id: frc_12.c,v 1.2 2003-03-24 11:14:58 pj Exp $
* $Id: frc_12.c,v 1.2 2003-03-24 11:14:58 pj Exp $
* $Id: frc_12.c,v 1.2 2003-03-24 11:14:58 pj Exp $
*/
void fftw_real2hc_12(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride)
{
fftw_real tmp5;
fftw_real tmp25;
fftw_real tmp11;
fftw_real tmp23;
fftw_real tmp30;
fftw_real tmp35;
fftw_real tmp10;
fftw_real tmp26;
fftw_real tmp12;
fftw_real tmp18;
fftw_real tmp29;
fftw_real tmp34;
fftw_real tmp31;
fftw_real tmp32;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp3;
fftw_real tmp4;
ASSERT_ALIGNED_DOUBLE();
tmp1 = input[0];
tmp2 = input[4 * istride];
tmp3 = input[8 * istride];
tmp4 = tmp2 + tmp3;
tmp5 = tmp1 + tmp4;
tmp25 = tmp1 - (K500000000 * tmp4);
tmp11 = tmp3 - tmp2;
}
{
fftw_real tmp19;
fftw_real tmp20;
fftw_real tmp21;
fftw_real tmp22;
ASSERT_ALIGNED_DOUBLE();
tmp19 = input[9 * istride];
tmp20 = input[istride];
tmp21 = input[5 * istride];
tmp22 = tmp20 + tmp21;
tmp23 = tmp19 - (K500000000 * tmp22);
tmp30 = tmp19 + tmp22;
tmp35 = tmp21 - tmp20;
}
{
fftw_real tmp6;
fftw_real tmp7;
fftw_real tmp8;
fftw_real tmp9;
ASSERT_ALIGNED_DOUBLE();
tmp6 = input[6 * istride];
tmp7 = input[10 * istride];
tmp8 = input[2 * istride];
tmp9 = tmp7 + tmp8;
tmp10 = tmp6 + tmp9;
tmp26 = tmp6 - (K500000000 * tmp9);
tmp12 = tmp8 - tmp7;
}
{
fftw_real tmp14;
fftw_real tmp15;
fftw_real tmp16;
fftw_real tmp17;
ASSERT_ALIGNED_DOUBLE();
tmp14 = input[3 * istride];
tmp15 = input[7 * istride];
tmp16 = input[11 * istride];
tmp17 = tmp15 + tmp16;
tmp18 = tmp14 - (K500000000 * tmp17);
tmp29 = tmp14 + tmp17;
tmp34 = tmp16 - tmp15;
}
real_output[3 * real_ostride] = tmp5 - tmp10;
imag_output[3 * imag_ostride] = tmp29 - tmp30;
tmp31 = tmp5 + tmp10;
tmp32 = tmp29 + tmp30;
real_output[6 * real_ostride] = tmp31 - tmp32;
real_output[0] = tmp31 + tmp32;
{
fftw_real tmp37;
fftw_real tmp38;
fftw_real tmp33;
fftw_real tmp36;
ASSERT_ALIGNED_DOUBLE();
tmp37 = tmp34 + tmp35;
tmp38 = tmp11 + tmp12;
imag_output[2 * imag_ostride] = K866025403 * (tmp37 - tmp38);
imag_output[4 * imag_ostride] = K866025403 * (tmp38 + tmp37);
tmp33 = tmp25 - tmp26;
tmp36 = K866025403 * (tmp34 - tmp35);
real_output[5 * real_ostride] = tmp33 - tmp36;
real_output[real_ostride] = tmp33 + tmp36;
}
{
fftw_real tmp27;
fftw_real tmp28;
fftw_real tmp13;
fftw_real tmp24;
ASSERT_ALIGNED_DOUBLE();
tmp27 = tmp25 + tmp26;
tmp28 = tmp18 + tmp23;
real_output[2 * real_ostride] = tmp27 - tmp28;
real_output[4 * real_ostride] = tmp27 + tmp28;
tmp13 = K866025403 * (tmp11 - tmp12);
tmp24 = tmp18 - tmp23;
imag_output[imag_ostride] = tmp13 - tmp24;
imag_output[5 * imag_ostride] = -(tmp13 + tmp24);
}
}
fftw_codelet_desc fftw_real2hc_12_desc =
{
"fftw_real2hc_12",
(void (*)()) fftw_real2hc_12,
12,
FFTW_FORWARD,
FFTW_REAL2HC,
266,
0,
(const int *) 0,
};