annotate fft/fftw/fftw-3.3.4/rdft/scalar/r2cb/hb_8.c @ 40:223f770b5341 kissfft-double tip

Try a double-precision kissfft

/*
 * Copyright (c) 2003, 2007-14 Matteo Frigo
 * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

/* This file was automatically generated --- DO NOT EDIT */
/* Generated on Tue Mar  4 13:50:25 EST 2014 */

#include "codelet-rdft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_hc2hc.native -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -sign 1 -n 8 -dif -name hb_8 -include hb.h */

/*
 * This function contains 66 FP additions, 36 FP multiplications,
 * (or, 44 additions, 14 multiplications, 22 fused multiply/add),
 * 52 stack variables, 1 constants, and 32 memory accesses
 */
#include "hb.h"

static void hb_8(R *cr, R *ci, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DK(KP707106781, +0.707106781186547524400844362104849039284835938);
     {
	  INT m;
	  for (m = mb, W = W + ((mb - 1) * 14); m < me; m = m + 1, cr = cr + ms, ci = ci - ms, W = W + 14, MAKE_VOLATILE_STRIDE(16, rs)) {
	       E Tw, TH, Tf, Ty, Tx, TI;
	       {
		    E TV, TD, T1i, T7, T1b, T1n, TQ, Tk, Tb, Tl, Ta, T1d, Tt, Tc, Tm;
		    E Tn;
		    {
			 E T4, Tg, T3, T19, TC, T5, Th, Ti;
			 {
			      E T1, T2, TA, TB;
			      T1 = cr[0];
			      T2 = ci[WS(rs, 3)];
			      TA = ci[WS(rs, 7)];
			      TB = cr[WS(rs, 4)];
			      T4 = cr[WS(rs, 2)];
			      Tg = T1 - T2;
			      T3 = T1 + T2;
			      T19 = TA - TB;
			      TC = TA + TB;
			      T5 = ci[WS(rs, 1)];
			      Th = ci[WS(rs, 5)];
			      Ti = cr[WS(rs, 6)];
			 }
			 {
			      E T8, T9, Tr, Ts;
			      T8 = cr[WS(rs, 1)];
			      {
				   E Tz, T6, T1a, Tj;
				   Tz = T4 - T5;
				   T6 = T4 + T5;
				   T1a = Th - Ti;
				   Tj = Th + Ti;
				   TV = TC - Tz;
				   TD = Tz + TC;
				   T1i = T3 - T6;
				   T7 = T3 + T6;
				   T1b = T19 + T1a;
				   T1n = T19 - T1a;
				   TQ = Tg + Tj;
				   Tk = Tg - Tj;
				   T9 = ci[WS(rs, 2)];
			      }
			      Tr = ci[WS(rs, 4)];
			      Ts = cr[WS(rs, 7)];
			      Tb = ci[0];
			      Tl = T8 - T9;
			      Ta = T8 + T9;
			      T1d = Tr - Ts;
			      Tt = Tr + Ts;
			      Tc = cr[WS(rs, 3)];
			      Tm = ci[WS(rs, 6)];
			      Tn = cr[WS(rs, 5)];
			 }
		    }
		    {
			 E Te, T1e, Tv, TG, T13, T1k, T1s, T10, T1p, T1v, T1u, T1w, T1t;
			 {
			      E TP, T1o, T1j, TR, TU, TX, TW;
			      TP = W[4];
			      {
				   E Tq, Td, T1c, To;
				   Tq = Tb - Tc;
				   Td = Tb + Tc;
				   T1c = Tm - Tn;
				   To = Tm + Tn;
				   {
					E Tu, TF, Tp, TE;
					Tu = Tq - Tt;
					TF = Tq + Tt;
					T1o = Ta - Td;
					Te = Ta + Td;
					T1j = T1d - T1c;
					T1e = T1c + T1d;
					Tp = Tl - To;
					TE = Tl + To;
					cr[0] = T7 + Te;
					ci[0] = T1b + T1e;
					TW = Tp - Tu;
					Tv = Tp + Tu;
					TR = TE + TF;
					TG = TE - TF;
				   }
			      }
			      TU = W[5];
			      TX = FMA(KP707106781, TW, TV);
			      T13 = FNMS(KP707106781, TW, TV);
			      {
				   E TS, TY, T1r, TT;
				   T1k = T1i - T1j;
				   T1s = T1i + T1j;
				   TS = FNMS(KP707106781, TR, TQ);
				   T10 = FMA(KP707106781, TR, TQ);
				   T1p = T1n - T1o;
				   T1v = T1o + T1n;
				   TY = TP * TX;
				   T1r = W[2];
				   TT = TP * TS;
				   T1u = W[3];
				   ci[WS(rs, 3)] = FMA(TU, TS, TY);
				   T1w = T1r * T1v;
				   T1t = T1r * T1s;
				   cr[WS(rs, 3)] = FNMS(TU, TX, TT);
			      }
			 }
			 {
			      E T1f, T15, T18, T17, T1g, T1h, T1m;
			      {
				   E TZ, T12, T16, T14, T11;
				   ci[WS(rs, 2)] = FMA(T1u, T1s, T1w);
				   cr[WS(rs, 2)] = FNMS(T1u, T1v, T1t);
				   TZ = W[12];
				   T12 = W[13];
				   T1f = T1b - T1e;
				   T16 = T7 - Te;
				   T14 = TZ * T13;
				   T11 = TZ * T10;
				   T15 = W[6];
				   T18 = W[7];
				   ci[WS(rs, 7)] = FMA(T12, T10, T14);
				   cr[WS(rs, 7)] = FNMS(T12, T13, T11);
				   T17 = T15 * T16;
				   T1g = T18 * T16;
			      }
			      cr[WS(rs, 4)] = FNMS(T18, T1f, T17);
			      ci[WS(rs, 4)] = FMA(T15, T1f, T1g);
			      T1h = W[10];
			      T1m = W[11];
			      {
				   E TN, TJ, TM, TL, TO, TK, T1q, T1l;
				   Tw = FNMS(KP707106781, Tv, Tk);
				   TK = FMA(KP707106781, Tv, Tk);
				   T1q = T1h * T1p;
				   T1l = T1h * T1k;
				   TN = FMA(KP707106781, TG, TD);
				   TH = FNMS(KP707106781, TG, TD);
				   ci[WS(rs, 6)] = FMA(T1m, T1k, T1q);
				   cr[WS(rs, 6)] = FNMS(T1m, T1p, T1l);
				   TJ = W[0];
				   TM = W[1];
				   Tf = W[8];
				   TL = TJ * TK;
				   TO = TM * TK;
				   Ty = W[9];
				   Tx = Tf * Tw;
				   cr[WS(rs, 1)] = FNMS(TM, TN, TL);
				   ci[WS(rs, 1)] = FMA(TJ, TN, TO);
			      }
			 }
		    }
	       }
	       cr[WS(rs, 5)] = FNMS(Ty, TH, Tx);
	       TI = Ty * Tw;
	       ci[WS(rs, 5)] = FMA(Tf, TH, TI);
	  }
     }
}

static const tw_instr twinstr[] = {
     {TW_FULL, 1, 8},
     {TW_NEXT, 1, 0}
};

static const hc2hc_desc desc = { 8, "hb_8", twinstr, &GENUS, {44, 14, 22, 0} };

void X(codelet_hb_8) (planner *p) {
     X(khc2hc_register) (p, hb_8, &desc);
}
#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_hc2hc.native -compact -variables 4 -pipeline-latency 4 -sign 1 -n 8 -dif -name hb_8 -include hb.h */

/*
 * This function contains 66 FP additions, 32 FP multiplications,
 * (or, 52 additions, 18 multiplications, 14 fused multiply/add),
 * 30 stack variables, 1 constants, and 32 memory accesses
 */
#include "hb.h"

static void hb_8(R *cr, R *ci, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DK(KP707106781, +0.707106781186547524400844362104849039284835938);
     {
	  INT m;
	  for (m = mb, W = W + ((mb - 1) * 14); m < me; m = m + 1, cr = cr + ms, ci = ci - ms, W = W + 14, MAKE_VOLATILE_STRIDE(16, rs)) {
	       E T7, T18, T1c, To, Ty, TM, TY, TC, Te, TZ, T10, Tv, Tz, TP, TS;
	       E TD;
	       {
		    E T3, TK, Tn, TL, T6, TW, Tk, TX;
		    {
			 E T1, T2, Tl, Tm;
			 T1 = cr[0];
			 T2 = ci[WS(rs, 3)];
			 T3 = T1 + T2;
			 TK = T1 - T2;
			 Tl = ci[WS(rs, 5)];
			 Tm = cr[WS(rs, 6)];
			 Tn = Tl - Tm;
			 TL = Tl + Tm;
		    }
		    {
			 E T4, T5, Ti, Tj;
			 T4 = cr[WS(rs, 2)];
			 T5 = ci[WS(rs, 1)];
			 T6 = T4 + T5;
			 TW = T4 - T5;
			 Ti = ci[WS(rs, 7)];
			 Tj = cr[WS(rs, 4)];
			 Tk = Ti - Tj;
			 TX = Ti + Tj;
		    }
		    T7 = T3 + T6;
		    T18 = TK + TL;
		    T1c = TX - TW;
		    To = Tk + Tn;
		    Ty = T3 - T6;
		    TM = TK - TL;
		    TY = TW + TX;
		    TC = Tk - Tn;
	       }
	       {
		    E Ta, TN, Tu, TR, Td, TQ, Tr, TO;
		    {
			 E T8, T9, Ts, Tt;
			 T8 = cr[WS(rs, 1)];
			 T9 = ci[WS(rs, 2)];
			 Ta = T8 + T9;
			 TN = T8 - T9;
			 Ts = ci[WS(rs, 4)];
			 Tt = cr[WS(rs, 7)];
			 Tu = Ts - Tt;
			 TR = Ts + Tt;
		    }
		    {
			 E Tb, Tc, Tp, Tq;
			 Tb = ci[0];
			 Tc = cr[WS(rs, 3)];
			 Td = Tb + Tc;
			 TQ = Tb - Tc;
			 Tp = ci[WS(rs, 6)];
			 Tq = cr[WS(rs, 5)];
			 Tr = Tp - Tq;
			 TO = Tp + Tq;
		    }
		    Te = Ta + Td;
		    TZ = TN + TO;
		    T10 = TQ + TR;
		    Tv = Tr + Tu;
		    Tz = Tu - Tr;
		    TP = TN - TO;
		    TS = TQ - TR;
		    TD = Ta - Td;
	       }
	       cr[0] = T7 + Te;
	       ci[0] = To + Tv;
	       {
		    E Tg, Tw, Tf, Th;
		    Tg = T7 - Te;
		    Tw = To - Tv;
		    Tf = W[6];
		    Th = W[7];
		    cr[WS(rs, 4)] = FNMS(Th, Tw, Tf * Tg);
		    ci[WS(rs, 4)] = FMA(Th, Tg, Tf * Tw);
	       }
	       {
		    E TG, TI, TF, TH;
		    TG = Ty + Tz;
		    TI = TD + TC;
		    TF = W[2];
		    TH = W[3];
		    cr[WS(rs, 2)] = FNMS(TH, TI, TF * TG);
		    ci[WS(rs, 2)] = FMA(TF, TI, TH * TG);
	       }
	       {
		    E TA, TE, Tx, TB;
		    TA = Ty - Tz;
		    TE = TC - TD;
		    Tx = W[10];
		    TB = W[11];
		    cr[WS(rs, 6)] = FNMS(TB, TE, Tx * TA);
		    ci[WS(rs, 6)] = FMA(Tx, TE, TB * TA);
	       }
	       {
		    E T1a, T1g, T1e, T1i, T19, T1d;
		    T19 = KP707106781 * (TZ + T10);
		    T1a = T18 - T19;
		    T1g = T18 + T19;
		    T1d = KP707106781 * (TP - TS);
		    T1e = T1c + T1d;
		    T1i = T1c - T1d;
		    {
			 E T17, T1b, T1f, T1h;
			 T17 = W[4];
			 T1b = W[5];
			 cr[WS(rs, 3)] = FNMS(T1b, T1e, T17 * T1a);
			 ci[WS(rs, 3)] = FMA(T17, T1e, T1b * T1a);
			 T1f = W[12];
			 T1h = W[13];
			 cr[WS(rs, 7)] = FNMS(T1h, T1i, T1f * T1g);
			 ci[WS(rs, 7)] = FMA(T1f, T1i, T1h * T1g);
		    }
	       }
	       {
		    E TU, T14, T12, T16, TT, T11;
		    TT = KP707106781 * (TP + TS);
		    TU = TM - TT;
		    T14 = TM + TT;
		    T11 = KP707106781 * (TZ - T10);
		    T12 = TY - T11;
		    T16 = TY + T11;
		    {
			 E TJ, TV, T13, T15;
			 TJ = W[8];
			 TV = W[9];
			 cr[WS(rs, 5)] = FNMS(TV, T12, TJ * TU);
			 ci[WS(rs, 5)] = FMA(TV, TU, TJ * T12);
			 T13 = W[0];
			 T15 = W[1];
			 cr[WS(rs, 1)] = FNMS(T15, T16, T13 * T14);
			 ci[WS(rs, 1)] = FMA(T15, T14, T13 * T16);
		    }
	       }
	  }
     }
}

static const tw_instr twinstr[] = {
     {TW_FULL, 1, 8},
     {TW_NEXT, 1, 0}
};

static const hc2hc_desc desc = { 8, "hb_8", twinstr, &GENUS, {52, 18, 14, 0} };

void X(codelet_hb_8) (planner *p) {
     X(khc2hc_register) (p, hb_8, &desc);
}
#endif				/* HAVE_FMA */