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t1_3.c

/*
 * Copyright (c) 2003, 2006 Matteo Frigo
 * Copyright (c) 2003, 2006 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  1 13:58:09 EDT 2006 */

#include "codelet-dft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_twiddle -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -n 3 -name t1_3 -include t.h */

/*
 * This function contains 16 FP additions, 14 FP multiplications,
 * (or, 6 additions, 4 multiplications, 10 fused multiply/add),
 * 21 stack variables, and 12 memory accesses
 */
/*
 * Generator Id's : 
 * $Id: algsimp.ml,v 1.9 2006-02-12 23:34:12 athena Exp $
 * $Id: fft.ml,v 1.4 2006-01-05 03:04:27 stevenj Exp $
 * $Id: gen_twiddle.ml,v 1.24 2006-02-12 23:34:12 athena Exp $
 */

#include "t.h"

static const R *t1_3(R *ri, R *ii, const R *W, stride ios, INT m, INT dist)
{
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     INT i;
     for (i = m; i > 0; i = i - 1, ri = ri + dist, ii = ii + dist, W = W + 4, MAKE_VOLATILE_STRIDE(ios)) {
        E T1, Tm, T9, Tc, Tb, Th, T7, Ti, Ta, Tj, Td;
        T1 = ri[0];
        Tm = ii[0];
        {
             E T3, T6, T2, T5, Tg, T4, T8;
             T3 = ri[WS(ios, 1)];
             T6 = ii[WS(ios, 1)];
             T2 = W[0];
             T5 = W[1];
             T9 = ri[WS(ios, 2)];
             Tc = ii[WS(ios, 2)];
             Tg = T2 * T6;
             T4 = T2 * T3;
             T8 = W[2];
             Tb = W[3];
             Th = FNMS(T5, T3, Tg);
             T7 = FMA(T5, T6, T4);
             Ti = T8 * Tc;
             Ta = T8 * T9;
        }
        Tj = FNMS(Tb, T9, Ti);
        Td = FMA(Tb, Tc, Ta);
        {
             E Tk, Te, To, Tn, Tl, Tf;
             Tk = Th - Tj;
             Tl = Th + Tj;
             Te = T7 + Td;
             To = Td - T7;
             ii[0] = Tl + Tm;
             Tn = FNMS(KP500000000, Tl, Tm);
             ri[0] = T1 + Te;
             Tf = FNMS(KP500000000, Te, T1);
             ii[WS(ios, 1)] = FMA(KP866025403, To, Tn);
             ii[WS(ios, 2)] = FNMS(KP866025403, To, Tn);
             ri[WS(ios, 2)] = FNMS(KP866025403, Tk, Tf);
             ri[WS(ios, 1)] = FMA(KP866025403, Tk, Tf);
        }
     }
     return W;
}

static const tw_instr twinstr[] = {
     {TW_FULL, 0, 3},
     {TW_NEXT, 1, 0}
};

static const ct_desc desc = { 3, "t1_3", twinstr, &GENUS, {6, 4, 10, 0}, 0, 0, 0 };

void X(codelet_t1_3) (planner *p) {
     X(kdft_dit_register) (p, t1_3, &desc);
}
#else                   /* HAVE_FMA */

/* Generated by: ../../../genfft/gen_twiddle -compact -variables 4 -pipeline-latency 4 -n 3 -name t1_3 -include t.h */

/*
 * This function contains 16 FP additions, 12 FP multiplications,
 * (or, 10 additions, 6 multiplications, 6 fused multiply/add),
 * 15 stack variables, and 12 memory accesses
 */
/*
 * Generator Id's : 
 * $Id: algsimp.ml,v 1.9 2006-02-12 23:34:12 athena Exp $
 * $Id: fft.ml,v 1.4 2006-01-05 03:04:27 stevenj Exp $
 * $Id: gen_twiddle.ml,v 1.24 2006-02-12 23:34:12 athena Exp $
 */

#include "t.h"

static const R *t1_3(R *ri, R *ii, const R *W, stride ios, INT m, INT dist)
{
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     INT i;
     for (i = m; i > 0; i = i - 1, ri = ri + dist, ii = ii + dist, W = W + 4, MAKE_VOLATILE_STRIDE(ios)) {
        E T1, Ti, T6, Te, Tb, Tf, Tc, Th;
        T1 = ri[0];
        Ti = ii[0];
        {
             E T3, T5, T2, T4;
             T3 = ri[WS(ios, 1)];
             T5 = ii[WS(ios, 1)];
             T2 = W[0];
             T4 = W[1];
             T6 = FMA(T2, T3, T4 * T5);
             Te = FNMS(T4, T3, T2 * T5);
        }
        {
             E T8, Ta, T7, T9;
             T8 = ri[WS(ios, 2)];
             Ta = ii[WS(ios, 2)];
             T7 = W[2];
             T9 = W[3];
             Tb = FMA(T7, T8, T9 * Ta);
             Tf = FNMS(T9, T8, T7 * Ta);
        }
        Tc = T6 + Tb;
        Th = Te + Tf;
        ri[0] = T1 + Tc;
        ii[0] = Th + Ti;
        {
             E Td, Tg, Tj, Tk;
             Td = FNMS(KP500000000, Tc, T1);
             Tg = KP866025403 * (Te - Tf);
             ri[WS(ios, 2)] = Td - Tg;
             ri[WS(ios, 1)] = Td + Tg;
             Tj = KP866025403 * (Tb - T6);
             Tk = FNMS(KP500000000, Th, Ti);
             ii[WS(ios, 1)] = Tj + Tk;
             ii[WS(ios, 2)] = Tk - Tj;
        }
     }
     return W;
}

static const tw_instr twinstr[] = {
     {TW_FULL, 0, 3},
     {TW_NEXT, 1, 0}
};

static const ct_desc desc = { 3, "t1_3", twinstr, &GENUS, {10, 6, 6, 0}, 0, 0, 0 };

void X(codelet_t1_3) (planner *p) {
     X(kdft_dit_register) (p, t1_3, &desc);
}
#endif                        /* HAVE_FMA */

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