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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 22:11:11 EDT 2003 */
#include "codelet-rdft.h"
/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_hc2r -compact -variables 4 -sign 1 -n 8 -name hc2r_8 -include hc2r.h */
/*
* This function contains 20 FP additions, 6 FP multiplications,
* (or, 20 additions, 6 multiplications, 0 fused multiply/add),
* 21 stack variables, and 16 memory accesses
*/
/*
* Generator Id's :
* $Id: hc2r_8.c,v 1.1 2008/10/17 06:12:08 scuri Exp $
* $Id: hc2r_8.c,v 1.1 2008/10/17 06:12:08 scuri Exp $
* $Id: hc2r_8.c,v 1.1 2008/10/17 06:12:08 scuri Exp $
*/
#include "hc2r.h"
static void hc2r_8(const R *ri, const R *ii, R *O, stride ris, stride iis, stride os, int v, int ivs, int ovs)
{
DK(KP1_414213562, +1.414213562373095048801688724209698078569671875);
DK(KP2_000000000, +2.000000000000000000000000000000000000000000000);
int i;
for (i = v; i > 0; i = i - 1, ri = ri + ivs, ii = ii + ivs, O = O + ovs) {
E T5, Tg, T3, Te, T9, Ti, Td, Tj, T6, Ta;
{
E T4, Tf, T1, T2;
T4 = ri[WS(ris, 2)];
T5 = KP2_000000000 * T4;
Tf = ii[WS(iis, 2)];
Tg = KP2_000000000 * Tf;
T1 = ri[0];
T2 = ri[WS(ris, 4)];
T3 = T1 + T2;
Te = T1 - T2;
{
E T7, T8, Tb, Tc;
T7 = ri[WS(ris, 1)];
T8 = ri[WS(ris, 3)];
T9 = KP2_000000000 * (T7 + T8);
Ti = T7 - T8;
Tb = ii[WS(iis, 1)];
Tc = ii[WS(iis, 3)];
Td = KP2_000000000 * (Tb - Tc);
Tj = Tb + Tc;
}
}
T6 = T3 + T5;
O[WS(os, 4)] = T6 - T9;
O[0] = T6 + T9;
Ta = T3 - T5;
O[WS(os, 2)] = Ta - Td;
O[WS(os, 6)] = Ta + Td;
{
E Th, Tk, Tl, Tm;
Th = Te - Tg;
Tk = KP1_414213562 * (Ti - Tj);
O[WS(os, 5)] = Th - Tk;
O[WS(os, 1)] = Th + Tk;
Tl = Te + Tg;
Tm = KP1_414213562 * (Ti + Tj);
O[WS(os, 3)] = Tl - Tm;
O[WS(os, 7)] = Tl + Tm;
}
}
}
static const khc2r_desc desc = { 8, "hc2r_8", {20, 6, 0, 0}, &GENUS, 0, 0, 0, 0, 0 };
void X(codelet_hc2r_8) (planner *p) {
X(khc2r_register) (p, hc2r_8, &desc);
}
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