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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 13:54:33 EDT 1999 */
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#include <fftw-int.h>
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#include <fftw.h>
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/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -real2hc 3 */
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/*
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 * This function contains 4 FP additions, 2 FP multiplications,
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 * (or, 3 additions, 1 multiplications, 1 fused multiply/add),
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 * 4 stack variables, and 6 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 :
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 * $Id: frc_3.c,v 1.2 2003-03-24 11:14:59 pj Exp $
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 * $Id: frc_3.c,v 1.2 2003-03-24 11:14:59 pj Exp $
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 * $Id: frc_3.c,v 1.2 2003-03-24 11:14:59 pj Exp $
2 pj 41
 */
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void fftw_real2hc_3(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 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[istride];
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     tmp3 = input[2 * istride];
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     tmp4 = tmp2 + tmp3;
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     real_output[real_ostride] = tmp1 - (K500000000 * tmp4);
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     real_output[0] = tmp1 + tmp4;
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     imag_output[imag_ostride] = K866025403 * (tmp3 - tmp2);
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}
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fftw_codelet_desc fftw_real2hc_3_desc =
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{
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     "fftw_real2hc_3",
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     (void (*)()) fftw_real2hc_3,
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     3,
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     FFTW_FORWARD,
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     FFTW_REAL2HC,
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     68,
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     0,
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     (const int *) 0,
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};