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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 21:56:41 EDT 2003 */
#include "codelet-rdft.h"
/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_r2hc -compact -variables 4 -n 8 -name r2hc_8 -include r2hc.h */
/*
* This function contains 20 FP additions, 2 FP multiplications,
* (or, 20 additions, 2 multiplications, 0 fused multiply/add),
* 14 stack variables, and 16 memory accesses
*/
/*
* Generator Id's :
* $Id: r2hc_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $
* $Id: r2hc_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $
* $Id: r2hc_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $
*/
#include "r2hc.h"
static void r2hc_8(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 T3, T7, Td, Tj, T6, Tg, Ta, Ti;
{
E T1, T2, Tb, Tc;
T1 = I[0];
T2 = I[WS(is, 4)];
T3 = T1 + T2;
T7 = T1 - T2;
Tb = I[WS(is, 7)];
Tc = I[WS(is, 3)];
Td = Tb - Tc;
Tj = Tb + Tc;
}
{
E T4, T5, T8, T9;
T4 = I[WS(is, 2)];
T5 = I[WS(is, 6)];
T6 = T4 + T5;
Tg = T4 - T5;
T8 = I[WS(is, 1)];
T9 = I[WS(is, 5)];
Ta = T8 - T9;
Ti = T8 + T9;
}
ro[WS(ros, 2)] = T3 - T6;
io[WS(ios, 2)] = Tj - Ti;
{
E Te, Tf, Th, Tk;
Te = KP707106781 * (Ta + Td);
ro[WS(ros, 3)] = T7 - Te;
ro[WS(ros, 1)] = T7 + Te;
Tf = KP707106781 * (Td - Ta);
io[WS(ios, 1)] = Tf - Tg;
io[WS(ios, 3)] = Tg + Tf;
Th = T3 + T6;
Tk = Ti + Tj;
ro[WS(ros, 4)] = Th - Tk;
ro[0] = Th + Tk;
}
}
}
static const kr2hc_desc desc = { 8, "r2hc_8", {20, 2, 0, 0}, &GENUS, 0, 0, 0, 0, 0 };
void X(codelet_r2hc_8) (planner *p) {
X(kr2hc_register) (p, r2hc_8, &desc);
}
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