hc2cb_20.c

快速fft变换

					     T1Q = W[11];
					     T1K = T1I * T1G;
					     T1H = T1F * T1G;
					     T1L = W[10];
					     T1U = T1Q * T1O;
					     Rm[WS(rs, 9)] = FMA(T1F, T1J, T1K);
					     Rp[WS(rs, 9)] = FNMS(T1I, T1J, T1H);
					     T1P = T1L * T1O;
					     Rm[WS(rs, 3)] = FMA(T1L, T1T, T1U);
					}
				   }
			      }
			 }
		    }
	       }
	  }
	  Rp[WS(rs, 3)] = FNMS(T1Q, T1T, T1P);
     }
}

static const tw_instr twinstr[] = {
     {TW_FULL, 1, 20},
     {TW_NEXT, 1, 0}
};

static const hc2c_desc desc = { 20, "hc2cb_20", twinstr, &GENUS, {136, 38, 110, 0} };

void X(codelet_hc2cb_20) (planner *p) {
     X(khc2c_register) (p, hc2cb_20, &desc, HC2C_VIA_RDFT);
}
#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_hc2c -compact -variables 4 -pipeline-latency 4 -sign 1 -n 20 -dif -name hc2cb_20 -include hc2cb.h */

/*
 * This function contains 246 FP additions, 124 FP multiplications,
 * (or, 184 additions, 62 multiplications, 62 fused multiply/add),
 * 97 stack variables, 4 constants, and 80 memory accesses
 */
#include "hc2cb.h"

static void hc2cb_20(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DK(KP250000000, +0.250000000000000000000000000000000000000000000);
     DK(KP559016994, +0.559016994374947424102293417182819058860154590);
     DK(KP587785252, +0.587785252292473129168705954639072768597652438);
     DK(KP951056516, +0.951056516295153572116439333379382143405698634);
     INT m;
     for (m = mb, W = W + ((mb - 1) * 38); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 38, MAKE_VOLATILE_STRIDE(rs)) {
	  E T7, T3T, T49, TE, T1v, T2T, T3g, T2d, T13, T3n, T3o, T1i, T26, T4e, T4d;
	  E T23, T1n, T42, T3Z, T1m, T2h, T2I, T2i, T2P, T30, T37, T38, Tm, TB, TC;
	  E T46, T47, T4a, T2a, T2b, T2e, T1w, T1x, T1y, T3O, T3R, T3U, T3h, T3i, T3j;
	  E TH, TK, TL;
	  {
	       E T3, T2R, T1r, T3e, T6, T3f, T1u, T2S;
	       {
		    E T1, T2, T1p, T1q;
		    T1 = Rp[0];
		    T2 = Rm[WS(rs, 9)];
		    T3 = T1 + T2;
		    T2R = T1 - T2;
		    T1p = Ip[0];
		    T1q = Im[WS(rs, 9)];
		    T1r = T1p - T1q;
		    T3e = T1p + T1q;
	       }
	       {
		    E T4, T5, T1s, T1t;
		    T4 = Rp[WS(rs, 5)];
		    T5 = Rm[WS(rs, 4)];
		    T6 = T4 + T5;
		    T3f = T4 - T5;
		    T1s = Ip[WS(rs, 5)];
		    T1t = Im[WS(rs, 4)];
		    T1u = T1s - T1t;
		    T2S = T1s + T1t;
	       }
	       T7 = T3 + T6;
	       T3T = T2R - T2S;
	       T49 = T3f + T3e;
	       TE = T3 - T6;
	       T1v = T1r - T1u;
	       T2T = T2R + T2S;
	       T3g = T3e - T3f;
	       T2d = T1r + T1u;
	  }
	  {
	       E Te, T3M, T3X, TF, TV, T2E, T2W, T21, TA, T3Q, T41, TJ, T1h, T2O, T36;
	       E T25, Tl, T3N, T3Y, TG, T12, T2H, T2Z, T22, Tt, T3P, T40, TI, T1a, T2L;
	       E T33, T24;
	       {
		    E Ta, T2U, TR, T2C, Td, T2D, TU, T2V;
		    {
			 E T8, T9, TP, TQ;
			 T8 = Rp[WS(rs, 4)];
			 T9 = Rm[WS(rs, 5)];
			 Ta = T8 + T9;
			 T2U = T8 - T9;
			 TP = Ip[WS(rs, 4)];
			 TQ = Im[WS(rs, 5)];
			 TR = TP - TQ;
			 T2C = TP + TQ;
		    }
		    {
			 E Tb, Tc, TS, TT;
			 Tb = Rp[WS(rs, 9)];
			 Tc = Rm[0];
			 Td = Tb + Tc;
			 T2D = Tb - Tc;
			 TS = Ip[WS(rs, 9)];
			 TT = Im[0];
			 TU = TS - TT;
			 T2V = TS + TT;
		    }
		    Te = Ta + Td;
		    T3M = T2U - T2V;
		    T3X = T2D + T2C;
		    TF = Ta - Td;
		    TV = TR - TU;
		    T2E = T2C - T2D;
		    T2W = T2U + T2V;
		    T21 = TR + TU;
	       }
	       {
		    E Tw, T34, T1d, T2N, Tz, T2M, T1g, T35;
		    {
			 E Tu, Tv, T1b, T1c;
			 Tu = Rm[WS(rs, 7)];
			 Tv = Rp[WS(rs, 2)];
			 Tw = Tu + Tv;
			 T34 = Tu - Tv;
			 T1b = Ip[WS(rs, 2)];
			 T1c = Im[WS(rs, 7)];
			 T1d = T1b - T1c;
			 T2N = T1b + T1c;
		    }
		    {
			 E Tx, Ty, T1e, T1f;
			 Tx = Rm[WS(rs, 2)];
			 Ty = Rp[WS(rs, 7)];
			 Tz = Tx + Ty;
			 T2M = Tx - Ty;
			 T1e = Ip[WS(rs, 7)];
			 T1f = Im[WS(rs, 2)];
			 T1g = T1e - T1f;
			 T35 = T1e + T1f;
		    }
		    TA = Tw + Tz;
		    T3Q = T34 + T35;
		    T41 = T2M - T2N;
		    TJ = Tw - Tz;
		    T1h = T1d - T1g;
		    T2O = T2M + T2N;
		    T36 = T34 - T35;
		    T25 = T1d + T1g;
	       }
	       {
		    E Th, T2X, TY, T2G, Tk, T2F, T11, T2Y;
		    {
			 E Tf, Tg, TW, TX;
			 Tf = Rm[WS(rs, 3)];
			 Tg = Rp[WS(rs, 6)];
			 Th = Tf + Tg;
			 T2X = Tf - Tg;
			 TW = Ip[WS(rs, 6)];
			 TX = Im[WS(rs, 3)];
			 TY = TW - TX;
			 T2G = TW + TX;
		    }
		    {
			 E Ti, Tj, TZ, T10;
			 Ti = Rp[WS(rs, 1)];
			 Tj = Rm[WS(rs, 8)];
			 Tk = Ti + Tj;
			 T2F = Ti - Tj;
			 TZ = Ip[WS(rs, 1)];
			 T10 = Im[WS(rs, 8)];
			 T11 = TZ - T10;
			 T2Y = TZ + T10;
		    }
		    Tl = Th + Tk;
		    T3N = T2X - T2Y;
		    T3Y = T2F - T2G;
		    TG = Th - Tk;
		    T12 = TY - T11;
		    T2H = T2F + T2G;
		    T2Z = T2X + T2Y;
		    T22 = TY + T11;
	       }
	       {
		    E Tp, T31, T16, T2J, Ts, T2K, T19, T32;
		    {
			 E Tn, To, T14, T15;
			 Tn = Rp[WS(rs, 8)];
			 To = Rm[WS(rs, 1)];
			 Tp = Tn + To;
			 T31 = Tn - To;
			 T14 = Ip[WS(rs, 8)];
			 T15 = Im[WS(rs, 1)];
			 T16 = T14 - T15;
			 T2J = T14 + T15;
		    }
		    {
			 E Tq, Tr, T17, T18;
			 Tq = Rm[WS(rs, 6)];
			 Tr = Rp[WS(rs, 3)];
			 Ts = Tq + Tr;
			 T2K = Tq - Tr;
			 T17 = Ip[WS(rs, 3)];
			 T18 = Im[WS(rs, 6)];
			 T19 = T17 - T18;
			 T32 = T17 + T18;
		    }
		    Tt = Tp + Ts;
		    T3P = T31 + T32;
		    T40 = T2K + T2J;
		    TI = Tp - Ts;
		    T1a = T16 - T19;
		    T2L = T2J - T2K;
		    T33 = T31 - T32;
		    T24 = T16 + T19;
	       }
	       T13 = TV - T12;
	       T3n = T2W - T2Z;
	       T3o = T33 - T36;
	       T1i = T1a - T1h;
	       T26 = T24 - T25;
	       T4e = T3P - T3Q;
	       T4d = T3M - T3N;
	       T23 = T21 - T22;
	       T1n = TI - TJ;
	       T42 = T40 - T41;
	       T3Z = T3X - T3Y;
	       T1m = TF - TG;
	       T2h = Te - Tl;
	       T2I = T2E + T2H;
	       T2i = Tt - TA;
	       T2P = T2L + T2O;
	       T30 = T2W + T2Z;
	       T37 = T33 + T36;
	       T38 = T30 + T37;
	       Tm = Te + Tl;
	       TB = Tt + TA;
	       TC = Tm + TB;
	       T46 = T3X + T3Y;
	       T47 = T40 + T41;
	       T4a = T46 + T47;
	       T2a = T21 + T22;
	       T2b = T24 + T25;
	       T2e = T2a + T2b;
	       T1w = TV + T12;
	       T1x = T1a + T1h;
	       T1y = T1w + T1x;
	       T3O = T3M + T3N;
	       T3R = T3P + T3Q;
	       T3U = T3O + T3R;
	       T3h = T2E - T2H;
	       T3i = T2L - T2O;
	       T3j = T3h + T3i;
	       TH = TF + TG;
	       TK = TI + TJ;
	       TL = TH + TK;
	  }
	  Rp[0] = T7 + TC;
	  Rm[0] = T2d + T2e;
	  {
	       E T1U, T1W, T1T, T1V;
	       T1U = TE + TL;
	       T1W = T1v + T1y;
	       T1T = W[18];
	       T1V = W[19];
	       Rp[WS(rs, 5)] = FNMS(T1V, T1W, T1T * T1U);
	       Rm[WS(rs, 5)] = FMA(T1V, T1U, T1T * T1W);
	  }
	  {
	       E T4y, T4A, T4x, T4z;
	       T4y = T3T + T3U;
	       T4A = T49 + T4a;
	       T4x = W[8];
	       T4z = W[9];
	       Ip[WS(rs, 2)] = FNMS(T4z, T4A, T4x * T4y);
	       Im[WS(rs, 2)] = FMA(T4x, T4A, T4z * T4y);
	  }
	  {
	       E T3I, T3K, T3H, T3J;
	       T3I = T2T + T38;
	       T3K = T3g + T3j;
	       T3H = W[28];
	       T3J = W[29];
	       Ip[WS(rs, 7)] = FNMS(T3J, T3K, T3H * T3I);
	       Im[WS(rs, 7)] = FMA(T3H, T3K, T3J * T3I);
	  }
	  {
	       E T27, T2j, T2v, T2r, T2g, T2u, T20, T2q;
	       T27 = FMA(KP951056516, T23, KP587785252 * T26);
	       T2j = FMA(KP951056516, T2h, KP587785252 * T2i);
	       T2v = FNMS(KP951056516, T2i, KP587785252 * T2h);
	       T2r = FNMS(KP951056516, T26, KP587785252 * T23);
	       {
		    E T2c, T2f, T1Y, T1Z;
		    T2c = KP559016994 * (T2a - T2b);
		    T2f = FNMS(KP250000000, T2e, T2d);
		    T2g = T2c + T2f;
		    T2u = T2f - T2c;
		    T1Y = KP559016994 * (Tm - TB);
		    T1Z = FNMS(KP250000000, TC, T7);
		    T20 = T1Y + T1Z;
		    T2q = T1Z - T1Y;
	       }
	       {
		    E T28, T2k, T1X, T29;
		    T28 = T20 + T27;
		    T2k = T2g - T2j;
		    T1X = W[6];
		    T29 = W[7];
		    Rp[WS(rs, 2)] = FNMS(T29, T2k, T1X * T28);
		    Rm[WS(rs, 2)] = FMA(T29, T28, T1X * T2k);
	       }
	       {
		    E T2y, T2A, T2x, T2z;
		    T2y = T2q - T2r;
		    T2A = T2v + T2u;
		    T2x = W[22];
		    T2z = W[23];
		    Rp[WS(rs, 6)] = FNMS(T2z, T2A, T2x * T2y);
		    Rm[WS(rs, 6)] = FMA(T2z, T2y, T2x * T2A);
	       }
	       {
		    E T2m, T2o, T2l, T2n;
		    T2m = T20 - T27;
		    T2o = T2j + T2g;
		    T2l = W[30];
		    T2n = W[31];
		    Rp[WS(rs, 8)] = FNMS(T2n, T2o, T2l * T2m);
		    Rm[WS(rs, 8)] = FMA(T2n, T2m, T2l * T2o);
	       }
	       {
		    E T2s, T2w, T2p, T2t;
		    T2s = T2q + T2r;
		    T2w = T2u - T2v;
		    T2p = W[14];
		    T2t = W[15];
		    Rp[WS(rs, 4)] = FNMS(T2t, T2w, T2p * T2s);
		    Rm[WS(rs, 4)] = FMA(T2t, T2s, T2p * T2w);
	       }
	  }
	  {
	       E T43, T4f, T4r, T4m, T4c, T4q, T3W, T4n;
	       T43 = FMA(KP951056516, T3Z, KP587785252 * T42);
	       T4f = FMA(KP951056516, T4d, KP587785252 * T4e);
	       T4r = FNMS(KP951056516, T4e, KP587785252 * T4d);
	       T4m = FNMS(KP951056516, T42, KP587785252 * T3Z);
	       {
		    E T48, T4b, T3S, T3V;
		    T48 = KP559016994 * (T46 - T47);
		    T4b = FNMS(KP250000000, T4a, T49);
		    T4c = T48 + T4b;
		    T4q = T4b - T48;
		    T3S = KP559016994 * (T3O - T3R);
		    T3V = FNMS(KP250000000, T3U, T3T);
		    T3W = T3S + T3V;
		    T4n = T3V - T3S;
	       }
	       {
		    E T44, T4g, T3L, T45;
		    T44 = T3W - T43;
		    T4g = T4c + T4f;
		    T3L = W[0];
		    T45 = W[1];
		    Ip[0] = FNMS(T45, T4g, T3L * T44);
		    Im[0] = FMA(T3L, T4g, T45 * T44);
	       }
	       {
		    E T4u, T4w, T4t, T4v;
		    T4u = T4n - T4m;
		    T4w = T4q + T4r;
		    T4t = W[32];
		    T4v = W[33];
		    Ip[WS(rs, 8)] = FNMS(T4v, T4w, T4t * T4u);
		    Im[WS(rs, 8)] = FMA(T4t, T4w, T4v * T4u);
	       }
	       {
		    E T4i, T4k, T4h, T4j;
		    T4i = T43 + T3W;
		    T4k = T4c - T4f;
		    T4h = W[16];
		    T4j = W[17];
		    Ip[WS(rs, 4)] = FNMS(T4j, T4k, T4h * T4i);
		    Im[WS(rs, 4)] = FMA(T4h, T4k, T4j * T4i);
	       }
	       {
		    E T4o, T4s, T4l, T4p;
		    T4o = T4m + T4n;
		    T4s = T4q - T4r;
		    T4l = W[24];
		    T4p = W[25];
		    Ip[WS(rs, 6)] = FNMS(T4p, T4s, T4l * T4o);
		    Im[WS(rs, 6)] = FMA(T4l, T4s, T4p * T4o);
	       }
	  }
	  {
	       E T1j, T1o, T1M, T1J, T1B, T1N, TO, T1I;
	       T1j = FNMS(KP951056516, T1i, KP587785252 * T13);
	       T1o = FNMS(KP951056516, T1n, KP587785252 * T1m);
	       T1M = FMA(KP951056516, T1m, KP587785252 * T1n);
	       T1J = FMA(KP951056516, T13, KP587785252 * T1i);
	       {
		    E T1z, T1A, TM, TN;
		    T1z = FNMS(KP250000000, T1y, T1v);
		    T1A = KP559016994 * (T1w - T1x);
		    T1B = T1z - T1A;
		    T1N = T1A + T1z;
		    TM = FNMS(KP250000000, TL, TE);
		    TN = KP559016994 * (TH - TK);
		    TO = TM - TN;
		    T1I = TN + TM;
	       }
	       {
		    E T1k, T1C, TD, T1l;
		    T1k = TO - T1j;
		    T1C = T1o + T1B;
		    TD = W[2];
		    T1l = W[3];
		    Rp[WS(rs, 1)] = FNMS(T1l, T1C, TD * T1k);
		    Rm[WS(rs, 1)] = FMA(T1l, T1k, TD * T1C);
	       }
	       {
		    E T1Q, T1S, T1P, T1R;
		    T1Q = T1I + T1J;
		    T1S = T1N - T1M;
		    T1P = W[26];
		    T1R = W[27];
		    Rp[WS(rs, 7)] = FNMS(T1R, T1S, T1P * T1Q);
		    Rm[WS(rs, 7)] = FMA(T1R, T1Q, T1P * T1S);
	       }
	       {
		    E T1E, T1G, T1D, T1F;
		    T1E = TO + T1j;
		    T1G = T1B - T1o;
		    T1D = W[34];
		    T1F = W[35];
		    Rp[WS(rs, 9)] = FNMS(T1F, T1G, T1D * T1E);
		    Rm[WS(rs, 9)] = FMA(T1F, T1E, T1D * T1G);
	       }
	       {
		    E T1K, T1O, T1H, T1L;
		    T1K = T1I - T1J;
		    T1O = T1M + T1N;
		    T1H = W[10];
		    T1L = W[11];
		    Rp[WS(rs, 3)] = FNMS(T1L, T1O, T1H * T1K);
		    Rm[WS(rs, 3)] = FMA(T1L, T1K, T1H * T1O);
	       }
	  }
	  {
	       E T2Q, T3p, T3B, T3x, T3m, T3A, T3b, T3w;
	       T2Q = FNMS(KP951056516, T2P, KP587785252 * T2I);
	       T3p = FNMS(KP951056516, T3o, KP587785252 * T3n);
	       T3B = FMA(KP951056516, T3n, KP587785252 * T3o);
	       T3x = FMA(KP951056516, T2I, KP587785252 * T2P);
	       {
		    E T3k, T3l, T39, T3a;
		    T3k = FNMS(KP250000000, T3j, T3g);
		    T3l = KP559016994 * (T3h - T3i);
		    T3m = T3k - T3l;
		    T3A = T3l + T3k;
		    T39 = FNMS(KP250000000, T38, T2T);
		    T3a = KP559016994 * (T30 - T37);
		    T3b = T39 - T3a;
		    T3w = T3a + T39;
	       }
	       {
		    E T3c, T3q, T2B, T3d;
		    T3c = T2Q + T3b;
		    T3q = T3m - T3p;
		    T2B = W[4];
		    T3d = W[5];
		    Ip[WS(rs, 1)] = FNMS(T3d, T3q, T2B * T3c);
		    Im[WS(rs, 1)] = FMA(T2B, T3q, T3d * T3c);
	       }
	       {
		    E T3E, T3G, T3D, T3F;
		    T3E = T3x + T3w;
		    T3G = T3A - T3B;
		    T3D = W[36];
		    T3F = W[37];
		    Ip[WS(rs, 9)] = FNMS(T3F, T3G, T3D * T3E);
		    Im[WS(rs, 9)] = FMA(T3D, T3G, T3F * T3E);
	       }
	       {
		    E T3s, T3u, T3r, T3t;
		    T3s = T3b - T2Q;
		    T3u = T3m + T3p;
		    T3r = W[12];
		    T3t = W[13];
		    Ip[WS(rs, 3)] = FNMS(T3t, T3u, T3r * T3s);
		    Im[WS(rs, 3)] = FMA(T3r, T3u, T3t * T3s);
	       }
	       {
		    E T3y, T3C, T3v, T3z;
		    T3y = T3w - T3x;
		    T3C = T3A + T3B;
		    T3v = W[20];
		    T3z = W[21];
		    Ip[WS(rs, 5)] = FNMS(T3z, T3C, T3v * T3y);
		    Im[WS(rs, 5)] = FMA(T3v, T3C, T3z * T3y);
	       }
	  }
     }
}

static const tw_instr twinstr[] = {
     {TW_FULL, 1, 20},
     {TW_NEXT, 1, 0}
};

static const hc2c_desc desc = { 20, "hc2cb_20", twinstr, &GENUS, {184, 62, 62, 0} };

void X(codelet_hc2cb_20) (planner *p) {
     X(khc2c_register) (p, hc2cb_20, &desc, HC2C_VIA_RDFT);
}
#endif				/* HAVE_FMA */