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.

static const kdft_desc desc = { 20, "n2fv_20", {58, 4, 46, 0}, &GENUS, 0, 2, 0, 0 };
void X(codelet_n2fv_20) (planner *p) {
     X(kdft_register) (p, n2fv_20, &desc);
}

#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_notw_c -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, 24 FP multiplications,
 * (or, 92 additions, 12 multiplications, 12 fused multiply/add),
 * 57 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(KP587785252, +0.587785252292473129168705954639072768597652438);
     DVK(KP951056516, +0.951056516295153572116439333379382143405698634);
     DVK(KP250000000, +0.250000000000000000000000000000000000000000000);
     DVK(KP559016994, +0.559016994374947424102293417182819058860154590);
     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 T3, T1B, Tm, T1i, TG, TN, TO, TH, T13, T16, T1k, T1u, T1v, T1z, T1r;
	  V T1s, T1y, T1a, T1d, T1j, Ti, TD, TB, TL;
	  {
	       V T1, T2, T1g, Tk, Tl, T1h;
	       T1 = LD(&(xi[0]), ivs, &(xi[0]));
	       T2 = LD(&(xi[WS(is, 10)]), ivs, &(xi[0]));
	       T1g = VADD(T1, T2);
	       Tk = LD(&(xi[WS(is, 5)]), ivs, &(xi[WS(is, 1)]));
	       Tl = LD(&(xi[WS(is, 15)]), ivs, &(xi[WS(is, 1)]));
	       T1h = VADD(Tk, Tl);
	       T3 = VSUB(T1, T2);
	       T1B = VADD(T1g, T1h);
	       Tm = VSUB(Tk, Tl);
	       T1i = VSUB(T1g, T1h);
	  }
	  {
	       V T6, T18, Tw, T12, Tz, T15, T9, T1b, Td, T11, Tp, T19, Ts, T1c, Tg;
	       V T14;
	       {
		    V T4, T5, Tu, Tv;
		    T4 = LD(&(xi[WS(is, 4)]), ivs, &(xi[0]));
		    T5 = LD(&(xi[WS(is, 14)]), ivs, &(xi[0]));
		    T6 = VSUB(T4, T5);
		    T18 = VADD(T4, T5);
		    Tu = LD(&(xi[WS(is, 13)]), ivs, &(xi[WS(is, 1)]));
		    Tv = LD(&(xi[WS(is, 3)]), ivs, &(xi[WS(is, 1)]));
		    Tw = VSUB(Tu, Tv);
		    T12 = VADD(Tu, Tv);
	       }
	       {
		    V Tx, Ty, T7, T8;
		    Tx = LD(&(xi[WS(is, 17)]), ivs, &(xi[WS(is, 1)]));
		    Ty = LD(&(xi[WS(is, 7)]), ivs, &(xi[WS(is, 1)]));
		    Tz = VSUB(Tx, Ty);
		    T15 = VADD(Tx, Ty);
		    T7 = LD(&(xi[WS(is, 16)]), ivs, &(xi[0]));
		    T8 = LD(&(xi[WS(is, 6)]), ivs, &(xi[0]));
		    T9 = VSUB(T7, T8);
		    T1b = VADD(T7, T8);
	       }
	       {
		    V Tb, Tc, Tn, To;
		    Tb = LD(&(xi[WS(is, 8)]), ivs, &(xi[0]));
		    Tc = LD(&(xi[WS(is, 18)]), ivs, &(xi[0]));
		    Td = VSUB(Tb, Tc);
		    T11 = VADD(Tb, Tc);
		    Tn = LD(&(xi[WS(is, 9)]), ivs, &(xi[WS(is, 1)]));
		    To = LD(&(xi[WS(is, 19)]), ivs, &(xi[WS(is, 1)]));
		    Tp = VSUB(Tn, To);
		    T19 = VADD(Tn, To);
	       }
	       {
		    V Tq, Tr, Te, Tf;
		    Tq = LD(&(xi[WS(is, 1)]), ivs, &(xi[WS(is, 1)]));
		    Tr = LD(&(xi[WS(is, 11)]), ivs, &(xi[WS(is, 1)]));
		    Ts = VSUB(Tq, Tr);
		    T1c = VADD(Tq, Tr);
		    Te = LD(&(xi[WS(is, 12)]), ivs, &(xi[0]));
		    Tf = LD(&(xi[WS(is, 2)]), ivs, &(xi[0]));
		    Tg = VSUB(Te, Tf);
		    T14 = VADD(Te, Tf);
	       }
	       TG = VSUB(Ts, Tp);
	       TN = VSUB(T6, T9);
	       TO = VSUB(Td, Tg);
	       TH = VSUB(Tz, Tw);
	       T13 = VSUB(T11, T12);
	       T16 = VSUB(T14, T15);
	       T1k = VADD(T13, T16);
	       T1u = VADD(T11, T12);
	       T1v = VADD(T14, T15);
	       T1z = VADD(T1u, T1v);
	       T1r = VADD(T18, T19);
	       T1s = VADD(T1b, T1c);
	       T1y = VADD(T1r, T1s);
	       T1a = VSUB(T18, T19);
	       T1d = VSUB(T1b, T1c);
	       T1j = VADD(T1a, T1d);
	       {
		    V Ta, Th, Tt, TA;
		    Ta = VADD(T6, T9);
		    Th = VADD(Td, Tg);
		    Ti = VADD(Ta, Th);
		    TD = VMUL(LDK(KP559016994), VSUB(Ta, Th));
		    Tt = VADD(Tp, Ts);
		    TA = VADD(Tw, Tz);
		    TB = VADD(Tt, TA);
		    TL = VMUL(LDK(KP559016994), VSUB(TA, Tt));
	       }
	  }
	  {
	       V T1I, T1J, T1K, T1L, T1N, T1H, Tj, TC;
	       Tj = VADD(T3, Ti);
	       TC = VBYI(VADD(Tm, TB));
	       T1H = VSUB(Tj, TC);
	       STM2(&(xo[10]), T1H, ovs, &(xo[2]));
	       T1I = VADD(Tj, TC);
	       STM2(&(xo[30]), T1I, ovs, &(xo[2]));
	       {
		    V T1A, T1C, T1D, T1x, T1G, T1t, T1w, T1F, T1E, T1M;
		    T1A = VMUL(LDK(KP559016994), VSUB(T1y, T1z));
		    T1C = VADD(T1y, T1z);
		    T1D = VFNMS(LDK(KP250000000), T1C, T1B);
		    T1t = VSUB(T1r, T1s);
		    T1w = VSUB(T1u, T1v);
		    T1x = VBYI(VFMA(LDK(KP951056516), T1t, VMUL(LDK(KP587785252), T1w)));
		    T1G = VBYI(VFNMS(LDK(KP587785252), T1t, VMUL(LDK(KP951056516), T1w)));
		    T1J = VADD(T1B, T1C);
		    STM2(&(xo[0]), T1J, ovs, &(xo[0]));
		    T1F = VSUB(T1D, T1A);
		    T1K = VSUB(T1F, T1G);
		    STM2(&(xo[16]), T1K, ovs, &(xo[0]));
		    T1L = VADD(T1G, T1F);
		    STM2(&(xo[24]), T1L, ovs, &(xo[0]));
		    T1E = VADD(T1A, T1D);
		    T1M = VADD(T1x, T1E);
		    STM2(&(xo[8]), T1M, ovs, &(xo[0]));
		    STN2(&(xo[8]), T1M, T1H, ovs);
		    T1N = VSUB(T1E, T1x);
		    STM2(&(xo[32]), T1N, ovs, &(xo[0]));
	       }
	       {
		    V T1O, T1P, T1R, T1S;
		    {
			 V T1n, T1l, T1m, T1f, T1q, T17, T1e, T1p, T1Q, T1o;
			 T1n = VMUL(LDK(KP559016994), VSUB(T1j, T1k));
			 T1l = VADD(T1j, T1k);
			 T1m = VFNMS(LDK(KP250000000), T1l, T1i);
			 T17 = VSUB(T13, T16);
			 T1e = VSUB(T1a, T1d);
			 T1f = VBYI(VFNMS(LDK(KP587785252), T1e, VMUL(LDK(KP951056516), T17)));
			 T1q = VBYI(VFMA(LDK(KP951056516), T1e, VMUL(LDK(KP587785252), T17)));
			 T1O = VADD(T1i, T1l);
			 STM2(&(xo[20]), T1O, ovs, &(xo[0]));
			 T1p = VADD(T1n, T1m);
			 T1P = VSUB(T1p, T1q);
			 STM2(&(xo[12]), T1P, ovs, &(xo[0]));
			 T1Q = VADD(T1q, T1p);
			 STM2(&(xo[28]), T1Q, ovs, &(xo[0]));
			 STN2(&(xo[28]), T1Q, T1I, ovs);
			 T1o = VSUB(T1m, T1n);
			 T1R = VADD(T1f, T1o);
			 STM2(&(xo[4]), T1R, ovs, &(xo[0]));
			 T1S = VSUB(T1o, T1f);
			 STM2(&(xo[36]), T1S, ovs, &(xo[0]));
		    }
		    {
			 V TI, TP, TX, TU, TM, TW, TF, TT, TK, TE;
			 TI = VFMA(LDK(KP951056516), TG, VMUL(LDK(KP587785252), TH));
			 TP = VFMA(LDK(KP951056516), TN, VMUL(LDK(KP587785252), TO));
			 TX = VFNMS(LDK(KP587785252), TN, VMUL(LDK(KP951056516), TO));
			 TU = VFNMS(LDK(KP587785252), TG, VMUL(LDK(KP951056516), TH));
			 TK = VFMS(LDK(KP250000000), TB, Tm);
			 TM = VADD(TK, TL);
			 TW = VSUB(TL, TK);
			 TE = VFNMS(LDK(KP250000000), Ti, T3);
			 TF = VADD(TD, TE);
			 TT = VSUB(TE, TD);
			 {
			      V TJ, TQ, T1T, T1U;
			      TJ = VADD(TF, TI);
			      TQ = VBYI(VSUB(TM, TP));
			      T1T = VSUB(TJ, TQ);
			      STM2(&(xo[38]), T1T, ovs, &(xo[2]));
			      STN2(&(xo[36]), T1S, T1T, ovs);
			      T1U = VADD(TJ, TQ);
			      STM2(&(xo[2]), T1U, ovs, &(xo[2]));
			      STN2(&(xo[0]), T1J, T1U, ovs);
			 }
			 {
			      V TZ, T10, T1V, T1W;
			      TZ = VADD(TT, TU);
			      T10 = VBYI(VADD(TX, TW));
			      T1V = VSUB(TZ, T10);
			      STM2(&(xo[26]), T1V, ovs, &(xo[2]));
			      STN2(&(xo[24]), T1L, T1V, ovs);
			      T1W = VADD(TZ, T10);
			      STM2(&(xo[14]), T1W, ovs, &(xo[2]));
			      STN2(&(xo[12]), T1P, T1W, ovs);
			 }
			 {
			      V TR, TS, T1X, T1Y;
			      TR = VSUB(TF, TI);
			      TS = VBYI(VADD(TP, TM));
			      T1X = VSUB(TR, TS);
			      STM2(&(xo[22]), T1X, ovs, &(xo[2]));
			      STN2(&(xo[20]), T1O, T1X, ovs);
			      T1Y = VADD(TR, TS);
			      STM2(&(xo[18]), T1Y, ovs, &(xo[2]));
			      STN2(&(xo[16]), T1K, T1Y, ovs);
			 }
			 {
			      V TV, TY, T1Z, T20;
			      TV = VSUB(TT, TU);
			      TY = VBYI(VSUB(TW, TX));
			      T1Z = VSUB(TV, TY);
			      STM2(&(xo[34]), T1Z, ovs, &(xo[2]));
			      STN2(&(xo[32]), T1N, T1Z, ovs);
			      T20 = VADD(TV, TY);
			      STM2(&(xo[6]), T20, ovs, &(xo[2]));
			      STN2(&(xo[4]), T1R, T20, ovs);
			 }
		    }
	       }
	  }
     }
}

static const kdft_desc desc = { 20, "n2fv_20", {92, 12, 12, 0}, &GENUS, 0, 2, 0, 0 };
void X(codelet_n2fv_20) (planner *p) {
     X(kdft_register) (p, n2fv_20, &desc);
}

#endif				/* HAVE_FMA */