n2fv_20.c

用于DFT计算的c语言的库的最新版本,包含丰富的函数库.

/*
 * 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 Mon Feb  9 19:52:22 EST 2009 */

#include "codelet-dft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_notw_c -fma -reorder-insns -schedule-for-pipeline -simd -compact -variables 4 -pipeline-latency 8 -n 20 -name n2fv_20 -with-ostride 2 -include n2f.h -store-multiple 2 */

/*
 * This function contains 104 FP additions, 50 FP multiplications,
 * (or, 58 additions, 4 multiplications, 46 fused multiply/add),
 * 79 stack variables, 4 constants, and 50 memory accesses
 */
#include "n2f.h"

static void n2fv_20(const R *ri, const R *ii, R *ro, R *io, stride is, stride os, INT v, INT ivs, INT ovs)
{
     DVK(KP559016994, +0.559016994374947424102293417182819058860154590);
     DVK(KP618033988, +0.618033988749894848204586834365638117720309180);
     DVK(KP951056516, +0.951056516295153572116439333379382143405698634);
     DVK(KP250000000, +0.250000000000000000000000000000000000000000000);
     INT i;
     const R *xi;
     R *xo;
     xi = ri;
     xo = ro;
     for (i = v; i > 0; i = i - VL, xi = xi + (VL * ivs), xo = xo + (VL * ovs), MAKE_VOLATILE_STRIDE(is), MAKE_VOLATILE_STRIDE(os)) {
	  V T1H, T1I, TU, TI, TP, TX, T1M, T1N, T1O, T1P, T1R, T1S, TM, TW, TT;
	  V TF;
	  {
	       V T3, Tm, T1r, T13, Ta, TN, TH, TA, TG, Tt, Th, TO, T1u, T1C, T1n;
	       V T1a, T1m, T1h, T1x, T1D, TE, Ti;
	       {
		    V T1, T2, Tk, Tl;
		    T1 = LD(&(xi[0]), ivs, &(xi[0]));
		    T2 = LD(&(xi[WS(is, 10)]), ivs, &(xi[0]));
		    Tk = LD(&(xi[WS(is, 5)]), ivs, &(xi[WS(is, 1)]));
		    Tl = LD(&(xi[WS(is, 15)]), ivs, &(xi[WS(is, 1)]));
		    {
			 V T14, T6, T1c, Tw, Tn, T1f, Tz, T17, T9, To, Tq, T1b, Td, Tr, Te;
			 V Tf, T15, Tp;
			 {
			      V Tx, Ty, T7, T8, Tb, Tc;
			      {
				   V T4, T5, Tu, Tv, T11, T12;
				   T4 = LD(&(xi[WS(is, 4)]), ivs, &(xi[0]));
				   T5 = LD(&(xi[WS(is, 14)]), ivs, &(xi[0]));
				   Tu = LD(&(xi[WS(is, 13)]), ivs, &(xi[WS(is, 1)]));
				   Tv = LD(&(xi[WS(is, 3)]), ivs, &(xi[WS(is, 1)]));
				   Tx = LD(&(xi[WS(is, 17)]), ivs, &(xi[WS(is, 1)]));
				   T3 = VSUB(T1, T2);
				   T11 = VADD(T1, T2);
				   Tm = VSUB(Tk, Tl);
				   T12 = VADD(Tk, Tl);
				   T14 = VADD(T4, T5);
				   T6 = VSUB(T4, T5);
				   T1c = VADD(Tu, Tv);
				   Tw = VSUB(Tu, Tv);
				   Ty = LD(&(xi[WS(is, 7)]), ivs, &(xi[WS(is, 1)]));
				   T7 = LD(&(xi[WS(is, 16)]), ivs, &(xi[0]));
				   T8 = LD(&(xi[WS(is, 6)]), ivs, &(xi[0]));
				   T1r = VADD(T11, T12);
				   T13 = VSUB(T11, T12);
			      }
			      Tb = LD(&(xi[WS(is, 8)]), ivs, &(xi[0]));
			      Tc = LD(&(xi[WS(is, 18)]), ivs, &(xi[0]));
			      Tn = LD(&(xi[WS(is, 9)]), ivs, &(xi[WS(is, 1)]));
			      T1f = VADD(Tx, Ty);
			      Tz = VSUB(Tx, Ty);
			      T17 = VADD(T7, T8);
			      T9 = VSUB(T7, T8);
			      To = LD(&(xi[WS(is, 19)]), ivs, &(xi[WS(is, 1)]));
			      Tq = LD(&(xi[WS(is, 1)]), ivs, &(xi[WS(is, 1)]));
			      T1b = VADD(Tb, Tc);
			      Td = VSUB(Tb, Tc);
			      Tr = LD(&(xi[WS(is, 11)]), ivs, &(xi[WS(is, 1)]));
			      Te = LD(&(xi[WS(is, 12)]), ivs, &(xi[0]));
			      Tf = LD(&(xi[WS(is, 2)]), ivs, &(xi[0]));
			 }
			 Ta = VADD(T6, T9);
			 TN = VSUB(T6, T9);
			 T15 = VADD(Tn, To);
			 Tp = VSUB(Tn, To);
			 TH = VSUB(Tz, Tw);
			 TA = VADD(Tw, Tz);
			 {
			      V T1d, T1v, T18, Ts, T1e, Tg, T16, T1s;
			      T1d = VSUB(T1b, T1c);
			      T1v = VADD(T1b, T1c);
			      T18 = VADD(Tq, Tr);
			      Ts = VSUB(Tq, Tr);
			      T1e = VADD(Te, Tf);
			      Tg = VSUB(Te, Tf);
			      T16 = VSUB(T14, T15);
			      T1s = VADD(T14, T15);
			      {
				   V T1t, T19, T1w, T1g;
				   T1t = VADD(T17, T18);
				   T19 = VSUB(T17, T18);
				   TG = VSUB(Ts, Tp);
				   Tt = VADD(Tp, Ts);
				   T1w = VADD(T1e, T1f);
				   T1g = VSUB(T1e, T1f);
				   Th = VADD(Td, Tg);
				   TO = VSUB(Td, Tg);
				   T1u = VADD(T1s, T1t);
				   T1C = VSUB(T1s, T1t);
				   T1n = VSUB(T16, T19);
				   T1a = VADD(T16, T19);
				   T1m = VSUB(T1d, T1g);
				   T1h = VADD(T1d, T1g);
				   T1x = VADD(T1v, T1w);
				   T1D = VSUB(T1v, T1w);
			      }
			 }
		    }
	       }
	       TE = VSUB(Ta, Th);
	       Ti = VADD(Ta, Th);
	       {
		    V TL, T1k, T1A, Tj, TD, T1E, T1G, TK, TC, T1j, T1z, T1i, T1y, TB;
		    TL = VSUB(TA, Tt);
		    TB = VADD(Tt, TA);
		    T1i = VADD(T1a, T1h);
		    T1k = VSUB(T1a, T1h);
		    T1y = VADD(T1u, T1x);
		    T1A = VSUB(T1u, T1x);
		    Tj = VADD(T3, Ti);
		    TD = VFNMS(LDK(KP250000000), Ti, T3);
		    T1E = VMUL(LDK(KP951056516), VFMA(LDK(KP618033988), T1D, T1C));
		    T1G = VMUL(LDK(KP951056516), VFNMS(LDK(KP618033988), T1C, T1D));
		    TK = VFNMS(LDK(KP250000000), TB, Tm);
		    TC = VADD(Tm, TB);
		    T1j = VFNMS(LDK(KP250000000), T1i, T13);
		    T1H = VADD(T1r, T1y);
		    STM2(&(xo[0]), T1H, ovs, &(xo[0]));
		    T1z = VFNMS(LDK(KP250000000), T1y, T1r);
		    T1I = VADD(T13, T1i);
		    STM2(&(xo[20]), T1I, ovs, &(xo[0]));
		    {
			 V T1J, T1K, T1p, T1l, T1o, T1q, T1F, T1B, T1L, T1Q;
			 TU = VFNMS(LDK(KP618033988), TG, TH);
			 TI = VFMA(LDK(KP618033988), TH, TG);
			 TP = VFMA(LDK(KP618033988), TO, TN);
			 TX = VFNMS(LDK(KP618033988), TN, TO);
			 T1J = VFMAI(TC, Tj);
			 STM2(&(xo[30]), T1J, ovs, &(xo[2]));
			 T1K = VFNMSI(TC, Tj);
			 STM2(&(xo[10]), T1K, ovs, &(xo[2]));
			 T1p = VFMA(LDK(KP559016994), T1k, T1j);
			 T1l = VFNMS(LDK(KP559016994), T1k, T1j);
			 T1o = VMUL(LDK(KP951056516), VFNMS(LDK(KP618033988), T1n, T1m));
			 T1q = VMUL(LDK(KP951056516), VFMA(LDK(KP618033988), T1m, T1n));
			 T1F = VFNMS(LDK(KP559016994), T1A, T1z);
			 T1B = VFMA(LDK(KP559016994), T1A, T1z);
			 T1L = VFMAI(T1q, T1p);
			 STM2(&(xo[28]), T1L, ovs, &(xo[0]));
			 STN2(&(xo[28]), T1L, T1J, ovs);
			 T1M = VFNMSI(T1q, T1p);
			 STM2(&(xo[12]), T1M, ovs, &(xo[0]));
			 T1N = VFNMSI(T1o, T1l);
			 STM2(&(xo[36]), T1N, ovs, &(xo[0]));
			 T1O = VFMAI(T1o, T1l);
			 STM2(&(xo[4]), T1O, ovs, &(xo[0]));
			 T1P = VFNMSI(T1E, T1B);
			 STM2(&(xo[32]), T1P, ovs, &(xo[0]));
			 T1Q = VFMAI(T1E, T1B);
			 STM2(&(xo[8]), T1Q, ovs, &(xo[0]));
			 STN2(&(xo[8]), T1Q, T1K, ovs);
			 T1R = VFMAI(T1G, T1F);
			 STM2(&(xo[24]), T1R, ovs, &(xo[0]));
			 T1S = VFNMSI(T1G, T1F);
			 STM2(&(xo[16]), T1S, ovs, &(xo[0]));
			 TM = VFNMS(LDK(KP559016994), TL, TK);
			 TW = VFMA(LDK(KP559016994), TL, TK);
			 TT = VFNMS(LDK(KP559016994), TE, TD);
			 TF = VFMA(LDK(KP559016994), TE, TD);
		    }
	       }
	  }
	  {
	       V T10, TY, TQ, TS, TJ, TR, TZ, TV;
	       T10 = VFMA(LDK(KP951056516), TX, TW);
	       TY = VFNMS(LDK(KP951056516), TX, TW);
	       TQ = VFMA(LDK(KP951056516), TP, TM);
	       TS = VFNMS(LDK(KP951056516), TP, TM);
	       TJ = VFMA(LDK(KP951056516), TI, TF);
	       TR = VFNMS(LDK(KP951056516), TI, TF);
	       TZ = VFMA(LDK(KP951056516), TU, TT);
	       TV = VFNMS(LDK(KP951056516), TU, TT);
	       {
		    V T1T, T1U, T1V, T1W;
		    T1T = VFMAI(TS, TR);
		    STM2(&(xo[22]), T1T, ovs, &(xo[2]));
		    STN2(&(xo[20]), T1I, T1T, ovs);
		    T1U = VFNMSI(TS, TR);
		    STM2(&(xo[18]), T1U, ovs, &(xo[2]));
		    STN2(&(xo[16]), T1S, T1U, ovs);
		    T1V = VFMAI(TQ, TJ);
		    STM2(&(xo[38]), T1V, ovs, &(xo[2]));
		    STN2(&(xo[36]), T1N, T1V, ovs);
		    T1W = VFNMSI(TQ, TJ);
		    STM2(&(xo[2]), T1W, ovs, &(xo[2]));
		    STN2(&(xo[0]), T1H, T1W, ovs);
		    {
			 V T1X, T1Y, T1Z, T20;
			 T1X = VFMAI(TY, TV);
			 STM2(&(xo[6]), T1X, ovs, &(xo[2]));
			 STN2(&(xo[4]), T1O, T1X, ovs);
			 T1Y = VFNMSI(TY, TV);
			 STM2(&(xo[34]), T1Y, ovs, &(xo[2]));
			 STN2(&(xo[32]), T1P, T1Y, ovs);
			 T1Z = VFMAI(T10, TZ);
			 STM2(&(xo[14]), T1Z, ovs, &(xo[2]));
			 STN2(&(xo[12]), T1M, T1Z, ovs);
			 T20 = VFNMSI(T10, TZ);
			 STM2(&(xo[26]), T20, ovs, &(xo[2]));
			 STN2(&(xo[24]), T1R, T20, ovs);
		    }
	       }
	  }
     }
}