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2 pj 1
/*
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 * Copyright (c) 1997-1999 Massachusetts Institute of Technology
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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/* This file was automatically generated --- DO NOT EDIT */
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/* Generated on Tue May 18 13:54:36 EDT 1999 */
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107 pj 23
#include <fftw-int.h>
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#include <fftw.h>
2 pj 25
 
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/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 12 */
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/*
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 * This function contains 38 FP additions, 8 FP multiplications,
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 * (or, 34 additions, 4 multiplications, 4 fused multiply/add),
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 * 18 stack variables, and 24 memory accesses
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 */
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static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627);
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static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
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/*
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 * Generator Id's :
107 pj 38
 * $Id: frc_12.c,v 1.2 2003-03-24 11:14:58 pj Exp $
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 * $Id: frc_12.c,v 1.2 2003-03-24 11:14:58 pj Exp $
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 * $Id: frc_12.c,v 1.2 2003-03-24 11:14:58 pj Exp $
2 pj 41
 */
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void fftw_real2hc_12(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride)
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{
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     fftw_real tmp5;
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     fftw_real tmp25;
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     fftw_real tmp11;
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     fftw_real tmp23;
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     fftw_real tmp30;
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     fftw_real tmp35;
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     fftw_real tmp10;
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     fftw_real tmp26;
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     fftw_real tmp12;
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     fftw_real tmp18;
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     fftw_real tmp29;
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     fftw_real tmp34;
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     fftw_real tmp31;
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     fftw_real tmp32;
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     ASSERT_ALIGNED_DOUBLE();
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     {
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          fftw_real tmp1;
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          fftw_real tmp2;
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          fftw_real tmp3;
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          fftw_real tmp4;
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          ASSERT_ALIGNED_DOUBLE();
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          tmp1 = input[0];
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          tmp2 = input[4 * istride];
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          tmp3 = input[8 * istride];
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          tmp4 = tmp2 + tmp3;
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          tmp5 = tmp1 + tmp4;
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          tmp25 = tmp1 - (K500000000 * tmp4);
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          tmp11 = tmp3 - tmp2;
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     }
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     {
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          fftw_real tmp19;
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          fftw_real tmp20;
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          fftw_real tmp21;
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          fftw_real tmp22;
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          ASSERT_ALIGNED_DOUBLE();
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          tmp19 = input[9 * istride];
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          tmp20 = input[istride];
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          tmp21 = input[5 * istride];
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          tmp22 = tmp20 + tmp21;
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          tmp23 = tmp19 - (K500000000 * tmp22);
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          tmp30 = tmp19 + tmp22;
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          tmp35 = tmp21 - tmp20;
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     }
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     {
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          fftw_real tmp6;
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          fftw_real tmp7;
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          fftw_real tmp8;
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          fftw_real tmp9;
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          ASSERT_ALIGNED_DOUBLE();
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          tmp6 = input[6 * istride];
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          tmp7 = input[10 * istride];
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          tmp8 = input[2 * istride];
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          tmp9 = tmp7 + tmp8;
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          tmp10 = tmp6 + tmp9;
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          tmp26 = tmp6 - (K500000000 * tmp9);
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          tmp12 = tmp8 - tmp7;
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     }
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     {
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          fftw_real tmp14;
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          fftw_real tmp15;
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          fftw_real tmp16;
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          fftw_real tmp17;
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          ASSERT_ALIGNED_DOUBLE();
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          tmp14 = input[3 * istride];
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          tmp15 = input[7 * istride];
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          tmp16 = input[11 * istride];
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          tmp17 = tmp15 + tmp16;
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          tmp18 = tmp14 - (K500000000 * tmp17);
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          tmp29 = tmp14 + tmp17;
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          tmp34 = tmp16 - tmp15;
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     }
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     real_output[3 * real_ostride] = tmp5 - tmp10;
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     imag_output[3 * imag_ostride] = tmp29 - tmp30;
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     tmp31 = tmp5 + tmp10;
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     tmp32 = tmp29 + tmp30;
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     real_output[6 * real_ostride] = tmp31 - tmp32;
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     real_output[0] = tmp31 + tmp32;
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     {
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          fftw_real tmp37;
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          fftw_real tmp38;
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          fftw_real tmp33;
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          fftw_real tmp36;
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          ASSERT_ALIGNED_DOUBLE();
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          tmp37 = tmp34 + tmp35;
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          tmp38 = tmp11 + tmp12;
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          imag_output[2 * imag_ostride] = K866025403 * (tmp37 - tmp38);
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          imag_output[4 * imag_ostride] = K866025403 * (tmp38 + tmp37);
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          tmp33 = tmp25 - tmp26;
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          tmp36 = K866025403 * (tmp34 - tmp35);
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          real_output[5 * real_ostride] = tmp33 - tmp36;
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          real_output[real_ostride] = tmp33 + tmp36;
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     }
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     {
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          fftw_real tmp27;
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          fftw_real tmp28;
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          fftw_real tmp13;
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          fftw_real tmp24;
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          ASSERT_ALIGNED_DOUBLE();
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          tmp27 = tmp25 + tmp26;
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          tmp28 = tmp18 + tmp23;
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          real_output[2 * real_ostride] = tmp27 - tmp28;
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          real_output[4 * real_ostride] = tmp27 + tmp28;
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          tmp13 = K866025403 * (tmp11 - tmp12);
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          tmp24 = tmp18 - tmp23;
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          imag_output[imag_ostride] = tmp13 - tmp24;
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          imag_output[5 * imag_ostride] = -(tmp13 + tmp24);
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     }
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}
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fftw_codelet_desc fftw_real2hc_12_desc =
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{
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     "fftw_real2hc_12",
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     (void (*)()) fftw_real2hc_12,
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     12,
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     FFTW_FORWARD,
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     FFTW_REAL2HC,
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     266,
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     0,
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     (const int *) 0,
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};