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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 13:54:39 EDT 1999 */
#include <ports/fftw-int.h>
#include <ports/fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 16 */
/*
* This function contains 58 FP additions, 12 FP multiplications,
* (or, 54 additions, 8 multiplications, 4 fused multiply/add),
* 30 stack variables, and 32 memory accesses
*/
static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938);
static const fftw_real K923879532 = FFTW_KONST(+0.923879532511286756128183189396788286822416626);
static const fftw_real K382683432 = FFTW_KONST(+0.382683432365089771728459984030398866761344562);
/*
* Generator Id's :
* $Id: frc_16.c,v 1.1.1.1 2002-03-29 14:12:59 pj Exp $
* $Id: frc_16.c,v 1.1.1.1 2002-03-29 14:12:59 pj Exp $
* $Id: frc_16.c,v 1.1.1.1 2002-03-29 14:12:59 pj Exp $
*/
void fftw_real2hc_16(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride)
{
fftw_real tmp3;
fftw_real tmp6;
fftw_real tmp7;
fftw_real tmp35;
fftw_real tmp18;
fftw_real tmp33;
fftw_real tmp40;
fftw_real tmp48;
fftw_real tmp56;
fftw_real tmp10;
fftw_real tmp13;
fftw_real tmp14;
fftw_real tmp36;
fftw_real tmp17;
fftw_real tmp26;
fftw_real tmp41;
fftw_real tmp51;
fftw_real tmp57;
fftw_real tmp16;
fftw_real tmp15;
fftw_real tmp43;
fftw_real tmp44;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp4;
fftw_real tmp5;
ASSERT_ALIGNED_DOUBLE();
tmp1 = input[0];
tmp2 = input[8 * istride];
tmp3 = tmp1 + tmp2;
tmp4 = input[4 * istride];
tmp5 = input[12 * istride];
tmp6 = tmp4 + tmp5;
tmp7 = tmp3 + tmp6;
tmp35 = tmp1 - tmp2;
tmp18 = tmp4 - tmp5;
}
{
fftw_real tmp29;
fftw_real tmp46;
fftw_real tmp32;
fftw_real tmp47;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp27;
fftw_real tmp28;
fftw_real tmp30;
fftw_real tmp31;
ASSERT_ALIGNED_DOUBLE();
tmp27 = input[istride];
tmp28 = input[9 * istride];
tmp29 = tmp27 - tmp28;
tmp46 = tmp27 + tmp28;
tmp30 = input[5 * istride];
tmp31 = input[13 * istride];
tmp32 = tmp30 - tmp31;
tmp47 = tmp30 + tmp31;
}
tmp33 = (K382683432 * tmp29) + (K923879532 * tmp32);
tmp40 = (K923879532 * tmp29) - (K382683432 * tmp32);
tmp48 = tmp46 - tmp47;
tmp56 = tmp46 + tmp47;
}
{
fftw_real tmp8;
fftw_real tmp9;
fftw_real tmp11;
fftw_real tmp12;
ASSERT_ALIGNED_DOUBLE();
tmp8 = input[2 * istride];
tmp9 = input[10 * istride];
tmp10 = tmp8 + tmp9;
tmp16 = tmp8 - tmp9;
tmp11 = input[14 * istride];
tmp12 = input[6 * istride];
tmp13 = tmp11 + tmp12;
tmp15 = tmp11 - tmp12;
}
tmp14 = tmp10 + tmp13;
tmp36 = K707106781 * (tmp16 + tmp15);
tmp17 = K707106781 * (tmp15 - tmp16);
{
fftw_real tmp22;
fftw_real tmp49;
fftw_real tmp25;
fftw_real tmp50;
ASSERT_ALIGNED_DOUBLE();
{
fftw_real tmp20;
fftw_real tmp21;
fftw_real tmp23;
fftw_real tmp24;
ASSERT_ALIGNED_DOUBLE();
tmp20 = input[15 * istride];
tmp21 = input[7 * istride];
tmp22 = tmp20 - tmp21;
tmp49 = tmp20 + tmp21;
tmp23 = input[3 * istride];
tmp24 = input[11 * istride];
tmp25 = tmp23 - tmp24;
tmp50 = tmp23 + tmp24;
}
tmp26 = (K382683432 * tmp22) - (K923879532 * tmp25);
tmp41 = (K923879532 * tmp22) + (K382683432 * tmp25);
tmp51 = tmp49 - tmp50;
tmp57 = tmp49 + tmp50;
}
{
fftw_real tmp55;
fftw_real tmp58;
fftw_real tmp53;
fftw_real tmp54;
ASSERT_ALIGNED_DOUBLE();
real_output[4 * real_ostride] = tmp7 - tmp14;
tmp55 = tmp7 + tmp14;
tmp58 = tmp56 + tmp57;
real_output[8 * real_ostride] = tmp55 - tmp58;
real_output[0] = tmp55 + tmp58;
imag_output[4 * imag_ostride] = tmp57 - tmp56;
tmp53 = tmp13 - tmp10;
tmp54 = K707106781 * (tmp51 - tmp48);
imag_output[2 * imag_ostride] = tmp53 + tmp54;
imag_output[6 * imag_ostride] = tmp54 - tmp53;
}
{
fftw_real tmp45;
fftw_real tmp52;
fftw_real tmp39;
fftw_real tmp42;
ASSERT_ALIGNED_DOUBLE();
tmp45 = tmp3 - tmp6;
tmp52 = K707106781 * (tmp48 + tmp51);
real_output[6 * real_ostride] = tmp45 - tmp52;
real_output[2 * real_ostride] = tmp45 + tmp52;
tmp39 = tmp35 + tmp36;
tmp42 = tmp40 + tmp41;
real_output[7 * real_ostride] = tmp39 - tmp42;
real_output[real_ostride] = tmp39 + tmp42;
}
tmp43 = tmp18 + tmp17;
tmp44 = tmp41 - tmp40;
imag_output[3 * imag_ostride] = tmp43 + tmp44;
imag_output[5 * imag_ostride] = tmp44 - tmp43;
{
fftw_real tmp19;
fftw_real tmp34;
fftw_real tmp37;
fftw_real tmp38;
ASSERT_ALIGNED_DOUBLE();
tmp19 = tmp17 - tmp18;
tmp34 = tmp26 - tmp33;
imag_output[imag_ostride] = tmp19 + tmp34;
imag_output[7 * imag_ostride] = tmp34 - tmp19;
tmp37 = tmp35 - tmp36;
tmp38 = tmp33 + tmp26;
real_output[5 * real_ostride] = tmp37 - tmp38;
real_output[3 * real_ostride] = tmp37 + tmp38;
}
}
fftw_codelet_desc fftw_real2hc_16_desc =
{
"fftw_real2hc_16",
(void (*)()) fftw_real2hc_16,
16,
FFTW_FORWARD,
FFTW_REAL2HC,
354,
0,
(const int *) 0,
};