r2cf_9.c

快速fft变换

/*
 * Copyright (c) 2003, 2007-8 Matteo Frigo
 * Copyright (c) 2003, 2007-8 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 Nov 15 20:55:49 EST 2008 */

#include "codelet-rdft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_r2cf -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -n 9 -name r2cf_9 -include r2cf.h */

/*
 * This function contains 38 FP additions, 30 FP multiplications,
 * (or, 12 additions, 4 multiplications, 26 fused multiply/add),
 * 57 stack variables, 18 constants, and 18 memory accesses
 */
#include "r2cf.h"

static void r2cf_9(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
{
     DK(KP907603734, +0.907603734547952313649323976213898122064543220);
     DK(KP852868531, +0.852868531952443209628250963940074071936020296);
     DK(KP347296355, +0.347296355333860697703433253538629592000751354);
     DK(KP666666666, +0.666666666666666666666666666666666666666666667);
     DK(KP879385241, +0.879385241571816768108218554649462939872416269);
     DK(KP984807753, +0.984807753012208059366743024589523013670643252);
     DK(KP673648177, +0.673648177666930348851716626769314796000375677);
     DK(KP898197570, +0.898197570222573798468955502359086394667167570);
     DK(KP939692620, +0.939692620785908384054109277324731469936208134);
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP203604859, +0.203604859554852403062088995281827210665664861);
     DK(KP152703644, +0.152703644666139302296566746461370407999248646);
     DK(KP394930843, +0.394930843634698457567117349190734585290304520);
     DK(KP968908795, +0.968908795874236621082202410917456709164223497);
     DK(KP726681596, +0.726681596905677465811651808188092531873167623);
     DK(KP586256827, +0.586256827714544512072145703099641959914944179);
     DK(KP184792530, +0.184792530904095372701352047572203755870913560);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     INT i;
     for (i = v; i > 0; i = i - 1, R0 = R0 + ivs, R1 = R1 + ivs, Cr = Cr + ovs, Ci = Ci + ovs, MAKE_VOLATILE_STRIDE(rs), MAKE_VOLATILE_STRIDE(csr), MAKE_VOLATILE_STRIDE(csi)) {
	  E Tp, Tz, Tw, Ts, TA;
	  {
	       E T1, T6, Tb, T7, T4, To, T8, Tc, Td, T2, T3;
	       T1 = R0[0];
	       T2 = R1[WS(rs, 1)];
	       T3 = R0[WS(rs, 3)];
	       T6 = R1[0];
	       Tb = R0[WS(rs, 1)];
	       T7 = R0[WS(rs, 2)];
	       T4 = T2 + T3;
	       To = T3 - T2;
	       T8 = R1[WS(rs, 3)];
	       Tc = R1[WS(rs, 2)];
	       Td = R0[WS(rs, 4)];
	       {
		    E T5, T9, Tk, Te, Ti;
		    T5 = T1 + T4;
		    Tp = FNMS(KP500000000, T4, T1);
		    T9 = T7 + T8;
		    Tk = T7 - T8;
		    Te = Tc + Td;
		    Ti = Td - Tc;
		    {
			 E Tl, Ta, Tu, Tf, Th;
			 Tl = FMS(KP500000000, T9, T6);
			 Ta = T6 + T9;
			 Tu = FMA(KP184792530, Tk, Ti);
			 Tf = Tb + Te;
			 Th = FNMS(KP500000000, Te, Tb);
			 {
			      E Tq, Ty, Tm, Tt;
			      Tq = FMA(KP586256827, Tl, Ti);
			      Ty = FMA(KP726681596, Tk, Tl);
			      Tm = FNMS(KP968908795, Tl, Tk);
			      Tt = FMA(KP394930843, Th, To);
			      {
				   E Tj, Tx, Tg, Tv;
				   Tj = FNMS(KP152703644, Ti, Th);
				   Tx = FMA(KP203604859, Th, Ti);
				   Tg = Ta + Tf;
				   Ci[WS(csi, 3)] = KP866025403 * (Tf - Ta);
				   Tv = FNMS(KP939692620, Tu, Tt);
				   {
					E TB, Tn, TC, Tr;
					TB = FMA(KP898197570, Ty, Tx);
					Tz = FNMS(KP898197570, Ty, Tx);
					Tw = FNMS(KP673648177, Tm, Tj);
					Tn = FMA(KP673648177, Tm, Tj);
					Cr[0] = T5 + Tg;
					Cr[WS(csr, 3)] = FNMS(KP500000000, Tg, T5);
					Ci[WS(csi, 2)] = KP984807753 * (FNMS(KP879385241, Tv, Tl));
					Ci[WS(csi, 1)] = -(KP984807753 * (FNMS(KP879385241, To, Tn)));
					TC = FMA(KP666666666, Tn, TB);
					Tr = FNMS(KP347296355, Tq, Tk);
					Ci[WS(csi, 4)] = KP866025403 * (FMA(KP852868531, TC, To));
					Ts = FNMS(KP907603734, Tr, Th);
				   }
			      }
			 }
		    }
	       }
	  }
	  Cr[WS(csr, 1)] = FMA(KP852868531, Tz, Tp);
	  TA = FNMS(KP500000000, Tz, Tw);
	  Cr[WS(csr, 2)] = FNMS(KP939692620, Ts, Tp);
	  Cr[WS(csr, 4)] = FMA(KP852868531, TA, Tp);
     }
}

static const kr2c_desc desc = { 9, "r2cf_9", {12, 4, 26, 0}, &GENUS };

void X(codelet_r2cf_9) (planner *p) {
     X(kr2c_register) (p, r2cf_9, &desc);
}

#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_r2cf -compact -variables 4 -pipeline-latency 4 -n 9 -name r2cf_9 -include r2cf.h */

/*
 * This function contains 38 FP additions, 26 FP multiplications,
 * (or, 21 additions, 9 multiplications, 17 fused multiply/add),
 * 36 stack variables, 14 constants, and 18 memory accesses
 */
#include "r2cf.h"

static void r2cf_9(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
{
     DK(KP939692620, +0.939692620785908384054109277324731469936208134);
     DK(KP296198132, +0.296198132726023843175338011893050938967728390);
     DK(KP342020143, +0.342020143325668733044099614682259580763083368);
     DK(KP813797681, +0.813797681349373692844693217248393223289101568);
     DK(KP984807753, +0.984807753012208059366743024589523013670643252);
     DK(KP150383733, +0.150383733180435296639271897612501926072238258);
     DK(KP642787609, +0.642787609686539326322643409907263432907559884);
     DK(KP663413948, +0.663413948168938396205421319635891297216863310);
     DK(KP852868531, +0.852868531952443209628250963940074071936020296);
     DK(KP173648177, +0.173648177666930348851716626769314796000375677);
     DK(KP556670399, +0.556670399226419366452912952047023132968291906);
     DK(KP766044443, +0.766044443118978035202392650555416673935832457);
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     INT i;
     for (i = v; i > 0; i = i - 1, R0 = R0 + ivs, R1 = R1 + ivs, Cr = Cr + ovs, Ci = Ci + ovs, MAKE_VOLATILE_STRIDE(rs), MAKE_VOLATILE_STRIDE(csr), MAKE_VOLATILE_STRIDE(csi)) {
	  E T1, T4, Tr, Ta, Tl, Ti, Tf, Tk, Tj, T2, T3, T5, Tg;
	  T1 = R0[0];
	  T2 = R1[WS(rs, 1)];
	  T3 = R0[WS(rs, 3)];
	  T4 = T2 + T3;
	  Tr = T3 - T2;
	  {
	       E T6, T7, T8, T9;
	       T6 = R1[0];
	       T7 = R0[WS(rs, 2)];
	       T8 = R1[WS(rs, 3)];
	       T9 = T7 + T8;
	       Ta = T6 + T9;
	       Tl = T8 - T7;
	       Ti = FNMS(KP500000000, T9, T6);
	  }
	  {
	       E Tb, Tc, Td, Te;
	       Tb = R0[WS(rs, 1)];
	       Tc = R1[WS(rs, 2)];
	       Td = R0[WS(rs, 4)];
	       Te = Tc + Td;
	       Tf = Tb + Te;
	       Tk = FNMS(KP500000000, Te, Tb);
	       Tj = Td - Tc;
	  }
	  Ci[WS(csi, 3)] = KP866025403 * (Tf - Ta);
	  T5 = T1 + T4;
	  Tg = Ta + Tf;
	  Cr[WS(csr, 3)] = FNMS(KP500000000, Tg, T5);
	  Cr[0] = T5 + Tg;
	  {
	       E Tt, Th, Tm, Tn, To, Tp, Tq, Ts;
	       Tt = KP866025403 * Tr;
	       Th = FNMS(KP500000000, T4, T1);
	       Tm = FMA(KP766044443, Ti, KP556670399 * Tl);
	       Tn = FMA(KP173648177, Tk, KP852868531 * Tj);
	       To = Tm + Tn;
	       Tp = FNMS(KP642787609, Ti, KP663413948 * Tl);
	       Tq = FNMS(KP984807753, Tk, KP150383733 * Tj);
	       Ts = Tp + Tq;
	       Cr[WS(csr, 1)] = Th + To;
	       Ci[WS(csi, 1)] = Tt + Ts;
	       Cr[WS(csr, 4)] = FMA(KP866025403, Tp - Tq, Th) - (KP500000000 * To);
	       Ci[WS(csi, 4)] = FNMS(KP500000000, Ts, KP866025403 * (Tr + (Tn - Tm)));
	       Ci[WS(csi, 2)] = FNMS(KP342020143, Tk, KP813797681 * Tj) + FNMA(KP150383733, Tl, KP984807753 * Ti) - Tt;
	       Cr[WS(csr, 2)] = FMA(KP173648177, Ti, Th) + FNMA(KP296198132, Tj, KP939692620 * Tk) - (KP852868531 * Tl);
	  }
     }
}

static const kr2c_desc desc = { 9, "r2cf_9", {21, 9, 17, 0}, &GENUS };

void X(codelet_r2cf_9) (planner *p) {
     X(kr2c_register) (p, r2cf_9, &desc);
}

#endif				/* HAVE_FMA */