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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 22:11:22 EDT 2003 */
#include "codelet-rdft.h"
/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_hc2hc -compact -variables 4 -sign 1 -n 4 -dif -name hb_4 -include hb.h */
/*
* This function contains 22 FP additions, 12 FP multiplications,
* (or, 16 additions, 6 multiplications, 6 fused multiply/add),
* 13 stack variables, and 16 memory accesses
*/
/*
* Generator Id's :
* $Id: hb_4.c,v 1.1 2008/10/17 06:12:08 scuri Exp $
* $Id: hb_4.c,v 1.1 2008/10/17 06:12:08 scuri Exp $
* $Id: hb_4.c,v 1.1 2008/10/17 06:12:08 scuri Exp $
*/
#include "hb.h"
static const R *hb_4(R *rio, R *iio, const R *W, stride ios, int m, int dist)
{
int i;
for (i = m - 2; i > 0; i = i - 2, rio = rio + dist, iio = iio - dist, W = W + 6) {
E T3, Ti, Tc, Tn, T6, Tm, Tf, Tj;
{
E T1, T2, Ta, Tb;
T1 = rio[0];
T2 = iio[-WS(ios, 2)];
T3 = T1 + T2;
Ti = T1 - T2;
Ta = iio[0];
Tb = rio[WS(ios, 2)];
Tc = Ta - Tb;
Tn = Ta + Tb;
}
{
E T4, T5, Td, Te;
T4 = rio[WS(ios, 1)];
T5 = iio[-WS(ios, 3)];
T6 = T4 + T5;
Tm = T4 - T5;
Td = iio[-WS(ios, 1)];
Te = rio[WS(ios, 3)];
Tf = Td - Te;
Tj = Td + Te;
}
rio[0] = T3 + T6;
iio[-WS(ios, 3)] = Tc + Tf;
{
E Tq, Ts, Tp, Tr;
Tq = Tn - Tm;
Ts = Ti + Tj;
Tp = W[4];
Tr = W[5];
iio[0] = FMA(Tp, Tq, Tr * Ts);
rio[WS(ios, 3)] = FNMS(Tr, Tq, Tp * Ts);
}
{
E T8, Tg, T7, T9;
T8 = T3 - T6;
Tg = Tc - Tf;
T7 = W[2];
T9 = W[3];
rio[WS(ios, 2)] = FNMS(T9, Tg, T7 * T8);
iio[-WS(ios, 1)] = FMA(T9, T8, T7 * Tg);
}
{
E Tk, To, Th, Tl;
Tk = Ti - Tj;
To = Tm + Tn;
Th = W[0];
Tl = W[1];
rio[WS(ios, 1)] = FNMS(Tl, To, Th * Tk);
iio[-WS(ios, 2)] = FMA(Th, To, Tl * Tk);
}
}
return W;
}
static const tw_instr twinstr[] = {
{TW_FULL, 0, 4},
{TW_NEXT, 1, 0}
};
static const hc2hc_desc desc = { 4, "hb_4", twinstr, {16, 6, 6, 0}, &GENUS, 0, 0, 0 };
void X(codelet_hb_4) (planner *p) {
X(khc2hc_dif_register) (p, hb_4, &desc);
}
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