t1_12.c

最新的FFT程序

/*
 * 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 Fri Jan 27 19:25:27 EST 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 12 -name t1_12 -include t.h */

/*
 * This function contains 118 FP additions, 68 FP multiplications,
 * (or, 72 additions, 22 multiplications, 46 fused multiply/add),
 * 84 stack variables, and 48 memory accesses
 */
/*
 * Generator Id's : 
 * $Id: algsimp.ml,v 1.8 2006-01-05 03:04:27 stevenj Exp $
 * $Id: fft.ml,v 1.4 2006-01-05 03:04:27 stevenj Exp $
 * $Id: gen_twiddle.ml,v 1.23 2006-01-05 03:04:27 stevenj Exp $
 */

#include "t.h"

static const R *t1_12(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 + 22, MAKE_VOLATILE_STRIDE(ios)) {
	  E T2B, T2C;
	  {
	       E T1, T2i, T2e, Tl, T1Y, T10, T1S, TG, T2f, T1s, T2r, Ty, T1Z, T1H, T21;
	       E T1d, TI, TL, T2h, T1l, T2o, Te, TJ, T1w, TO, TR, TN, TK, TQ;
	       {
		    E TW, TZ, TY, T1X, TX;
		    T1 = ri[0];
		    T2i = ii[0];
		    {
			 E Th, Tk, Tg, Tj, T2d, Ti, TV;
			 Th = ri[WS(ios, 6)];
			 Tk = ii[WS(ios, 6)];
			 Tg = W[10];
			 Tj = W[11];
			 TW = ri[WS(ios, 9)];
			 TZ = ii[WS(ios, 9)];
			 T2d = Tg * Tk;
			 Ti = Tg * Th;
			 TV = W[16];
			 TY = W[17];
			 T2e = FNMS(Tj, Th, T2d);
			 Tl = FMA(Tj, Tk, Ti);
			 T1X = TV * TZ;
			 TX = TV * TW;
		    }
		    {
			 E Tn, Tq, Tt, T1o, To, Tw, Ts, Tp, Tv;
			 {
			      E TC, TF, TB, TE, T1R, TD, Tm;
			      TC = ri[WS(ios, 3)];
			      TF = ii[WS(ios, 3)];
			      T1Y = FNMS(TY, TW, T1X);
			      T10 = FMA(TY, TZ, TX);
			      TB = W[4];
			      TE = W[5];
			      Tn = ri[WS(ios, 10)];
			      Tq = ii[WS(ios, 10)];
			      T1R = TB * TF;
			      TD = TB * TC;
			      Tm = W[18];
			      Tt = ri[WS(ios, 2)];
			      T1S = FNMS(TE, TC, T1R);
			      TG = FMA(TE, TF, TD);
			      T1o = Tm * Tq;
			      To = Tm * Tn;
			      Tw = ii[WS(ios, 2)];
			      Ts = W[2];
			      Tp = W[19];
			      Tv = W[3];
			 }
			 {
			      E T12, T15, T13, T1D, T18, T1b, T17, T14, T1a;
			      {
				   E T1p, Tr, T1r, Tx, T1q, Tu, T11;
				   T12 = ri[WS(ios, 1)];
				   T1q = Ts * Tw;
				   Tu = Ts * Tt;
				   T1p = FNMS(Tp, Tn, T1o);
				   Tr = FMA(Tp, Tq, To);
				   T1r = FNMS(Tv, Tt, T1q);
				   Tx = FMA(Tv, Tw, Tu);
				   T15 = ii[WS(ios, 1)];
				   T11 = W[0];
				   T2f = T1p + T1r;
				   T1s = T1p - T1r;
				   T2r = Tx - Tr;
				   Ty = Tr + Tx;
				   T13 = T11 * T12;
				   T1D = T11 * T15;
			      }
			      T18 = ri[WS(ios, 5)];
			      T1b = ii[WS(ios, 5)];
			      T17 = W[8];
			      T14 = W[1];
			      T1a = W[9];
			      {
				   E T3, T6, T4, T1h, T9, Tc, T8, T5, Tb;
				   {
					E T1E, T16, T1G, T1c, T1F, T19, T2;
					T3 = ri[WS(ios, 4)];
					T1F = T17 * T1b;
					T19 = T17 * T18;
					T1E = FNMS(T14, T12, T1D);
					T16 = FMA(T14, T15, T13);
					T1G = FNMS(T1a, T18, T1F);
					T1c = FMA(T1a, T1b, T19);
					T6 = ii[WS(ios, 4)];
					T2 = W[6];
					T1Z = T1E + T1G;
					T1H = T1E - T1G;
					T21 = T1c - T16;
					T1d = T16 + T1c;
					T4 = T2 * T3;
					T1h = T2 * T6;
				   }
				   T9 = ri[WS(ios, 8)];
				   Tc = ii[WS(ios, 8)];
				   T8 = W[14];
				   T5 = W[7];
				   Tb = W[15];
				   {
					E T1i, T7, T1k, Td, T1j, Ta, TH;
					TI = ri[WS(ios, 7)];
					T1j = T8 * Tc;
					Ta = T8 * T9;
					T1i = FNMS(T5, T3, T1h);
					T7 = FMA(T5, T6, T4);
					T1k = FNMS(Tb, T9, T1j);
					Td = FMA(Tb, Tc, Ta);
					TL = ii[WS(ios, 7)];
					TH = W[12];
					T2h = T1i + T1k;
					T1l = T1i - T1k;
					T2o = Td - T7;
					Te = T7 + Td;
					TJ = TH * TI;
					T1w = TH * TL;
				   }
				   TO = ri[WS(ios, 11)];
				   TR = ii[WS(ios, 11)];
				   TN = W[20];
				   TK = W[13];
				   TQ = W[21];
			      }
			 }
		    }
	       }
	       {
		    E T1g, T1n, T2q, T1A, T1V, T28, TA, T2n, T1v, T1C, T1U, T29, T2m, T2k, T2l;
		    E T1f, T2a, T20;
		    {
			 E T2g, T1T, TT, T2j, TU, T1e;
			 {
			      E Tf, T1x, TM, T1z, TS, Tz, T1y, TP;
			      T1g = FNMS(KP500000000, Te, T1);
			      Tf = T1 + Te;
			      T1y = TN * TR;
			      TP = TN * TO;
			      T1x = FNMS(TK, TI, T1w);
			      TM = FMA(TK, TL, TJ);
			      T1z = FNMS(TQ, TO, T1y);
			      TS = FMA(TQ, TR, TP);
			      Tz = Tl + Ty;
			      T1n = FNMS(KP500000000, Ty, Tl);
			      T2q = FNMS(KP500000000, T2f, T2e);
			      T2g = T2e + T2f;
			      T1T = T1x + T1z;
			      T1A = T1x - T1z;
			      T1V = TS - TM;
			      TT = TM + TS;
			      T28 = Tf - Tz;
			      TA = Tf + Tz;
			      T2j = T2h + T2i;
			      T2n = FNMS(KP500000000, T2h, T2i);
			 }
			 T1v = FNMS(KP500000000, TT, TG);
			 TU = TG + TT;
			 T1e = T10 + T1d;
			 T1C = FNMS(KP500000000, T1d, T10);
			 T1U = FNMS(KP500000000, T1T, T1S);
			 T29 = T1S + T1T;
			 T2m = T2j - T2g;
			 T2k = T2g + T2j;
			 T2l = TU - T1e;
			 T1f = TU + T1e;
			 T2a = T1Y + T1Z;
			 T20 = FNMS(KP500000000, T1Z, T1Y);
		    }
		    {
			 E T1m, T1K, T2y, T2p, T2x, T2s, T1L, T1t, T1B, T1N, T2c, T2b;
			 ii[WS(ios, 9)] = T2m - T2l;
			 ii[WS(ios, 3)] = T2l + T2m;
			 ri[0] = TA + T1f;
			 ri[WS(ios, 6)] = TA - T1f;
			 T2c = T29 + T2a;
			 T2b = T29 - T2a;
			 T1m = FNMS(KP866025403, T1l, T1g);
			 T1K = FMA(KP866025403, T1l, T1g);
			 ii[0] = T2c + T2k;
			 ii[WS(ios, 6)] = T2k - T2c;
			 ri[WS(ios, 9)] = T28 + T2b;
			 ri[WS(ios, 3)] = T28 - T2b;
			 T2y = FNMS(KP866025403, T2o, T2n);
			 T2p = FMA(KP866025403, T2o, T2n);
			 T2x = FNMS(KP866025403, T2r, T2q);
			 T2s = FMA(KP866025403, T2r, T2q);
			 T1L = FMA(KP866025403, T1s, T1n);
			 T1t = FNMS(KP866025403, T1s, T1n);
			 T1B = FNMS(KP866025403, T1A, T1v);
			 T1N = FMA(KP866025403, T1A, T1v);
			 {
			      E T24, T27, T1Q, T2u, T23, T2v, T2w, T2t;
			      {
				   E T1u, T1W, T22, T1O, T1I, T2z, T2A, T25, T26, T1M, T1J, T1P;
				   T24 = T1m - T1t;
				   T1u = T1m + T1t;
				   T25 = FNMS(KP866025403, T1V, T1U);
				   T1W = FMA(KP866025403, T1V, T1U);
				   T26 = FNMS(KP866025403, T21, T20);
				   T22 = FMA(KP866025403, T21, T20);
				   T1O = FMA(KP866025403, T1H, T1C);
				   T1I = FNMS(KP866025403, T1H, T1C);
				   T2z = T2x + T2y;
				   T2B = T2y - T2x;
				   T27 = T25 - T26;
				   T2A = T25 + T26;
				   T1M = T1K + T1L;
				   T1Q = T1K - T1L;
				   T2C = T1B - T1I;
				   T1J = T1B + T1I;
				   T1P = T1N + T1O;
				   T2u = T1N - T1O;
				   ii[WS(ios, 8)] = T2A + T2z;
				   ii[WS(ios, 2)] = T2z - T2A;
				   ri[WS(ios, 8)] = T1u + T1J;
				   ri[WS(ios, 2)] = T1u - T1J;
				   ri[WS(ios, 10)] = T1M - T1P;
				   ri[WS(ios, 4)] = T1M + T1P;
				   T23 = T1W - T22;
				   T2v = T1W + T22;
				   T2w = T2s + T2p;
				   T2t = T2p - T2s;
			      }
			      ii[WS(ios, 10)] = T2w - T2v;
			      ii[WS(ios, 4)] = T2v + T2w;
			      ri[WS(ios, 1)] = T1Q + T23;
			      ri[WS(ios, 7)] = T1Q - T23;
			      ii[WS(ios, 7)] = T2u + T2t;
			      ii[WS(ios, 1)] = T2t - T2u;
			      ri[WS(ios, 5)] = T24 + T27;
			      ri[WS(ios, 11)] = T24 - T27;
			 }
		    }
	       }
	  }
	  ii[WS(ios, 11)] = T2C + T2B;
	  ii[WS(ios, 5)] = T2B - T2C;
     }
     return W;
}