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/*
* Copyright (c) 2003 Matteo Frigo
* Copyright (c) 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 Sat Jul 5 21:58:02 EDT 2003 */
#include "codelet-rdft.h"
/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_r2hc -compact -variables 4 -n 4 -name r2hcII_4 -dft-II -include r2hcII.h */
/*
* This function contains 6 FP additions, 2 FP multiplications,
* (or, 6 additions, 2 multiplications, 0 fused multiply/add),
* 8 stack variables, and 8 memory accesses
*/
/*
* Generator Id's :
* $Id: r2hcII_4.c,v 1.1 2008/10/17 06:12:34 scuri Exp $
* $Id: r2hcII_4.c,v 1.1 2008/10/17 06:12:34 scuri Exp $
* $Id: r2hcII_4.c,v 1.1 2008/10/17 06:12:34 scuri Exp $
*/
#include "r2hcII.h"
static void r2hcII_4(const R *I, R *ro, R *io, stride is, stride ros, stride ios, int v, int ivs, int ovs)
{
DK(KP707106781, +0.707106781186547524400844362104849039284835938);
int i;
for (i = v; i > 0; i = i - 1, I = I + ivs, ro = ro + ovs, io = io + ovs) {
E T1, T6, T4, T5, T2, T3;
T1 = I[0];
T6 = I[WS(is, 2)];
T2 = I[WS(is, 1)];
T3 = I[WS(is, 3)];
T4 = KP707106781 * (T2 - T3);
T5 = KP707106781 * (T2 + T3);
ro[WS(ros, 1)] = T1 - T4;
io[WS(ios, 1)] = T6 - T5;
ro[0] = T1 + T4;
io[0] = -(T5 + T6);
}
}
static const kr2hc_desc desc = { 4, "r2hcII_4", {6, 2, 0, 0}, &GENUS, 0, 0, 0, 0, 0 };
void X(codelet_r2hcII_4) (planner *p) {
X(kr2hcII_register) (p, r2hcII_4, &desc);
}
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