annotate src/fftw-3.3.8/rdft/scalar/r2cb/hc2cbdft_6.c @ 82:d0c2a83c1364

Add FFTW 3.3.8 source, and a Linux build

/*
 * 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 Thu May 24 08:07:57 EDT 2018 */

#include "rdft/codelet-rdft.h"

#if defined(ARCH_PREFERS_FMA) || defined(ISA_EXTENSION_PREFERS_FMA)

/* Generated by: ../../../genfft/gen_hc2cdft.native -fma -compact -variables 4 -pipeline-latency 4 -sign 1 -n 6 -dif -name hc2cbdft_6 -include rdft/scalar/hc2cb.h */

/*
 * This function contains 58 FP additions, 32 FP multiplications,
 * (or, 36 additions, 10 multiplications, 22 fused multiply/add),
 * 34 stack variables, 2 constants, and 24 memory accesses
 */
#include "rdft/scalar/hc2cb.h"

static void hc2cbdft_6(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     {
	  INT m;
	  for (m = mb, W = W + ((mb - 1) * 10); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 10, MAKE_VOLATILE_STRIDE(24, rs)) {
	       E Tp, TD, Tj, TV, Tq, Tr, TG, TP, T4, Ts, TQ, Tb, Tc, TA, TU;
	       {
		    E Tf, TF, Ti, TE, Td, Te;
		    Td = Ip[WS(rs, 1)];
		    Te = Im[WS(rs, 1)];
		    Tf = Td - Te;
		    TF = Te + Td;
		    {
			 E Tn, To, Tg, Th;
			 Tn = Ip[0];
			 To = Im[WS(rs, 2)];
			 Tp = Tn - To;
			 TD = Tn + To;
			 Tg = Ip[WS(rs, 2)];
			 Th = Im[0];
			 Ti = Tg - Th;
			 TE = Tg + Th;
		    }
		    Tj = Tf - Ti;
		    TV = TF + TE;
		    Tq = Tf + Ti;
		    Tr = FNMS(KP500000000, Tq, Tp);
		    TG = TE - TF;
		    TP = FNMS(KP500000000, TG, TD);
	       }
	       {
		    E Tw, Ta, Ty, T7, Tx, T2, T3, Tz;
		    T2 = Rp[0];
		    T3 = Rm[WS(rs, 2)];
		    T4 = T2 + T3;
		    Tw = T2 - T3;
		    {
			 E T8, T9, T5, T6;
			 T8 = Rm[WS(rs, 1)];
			 T9 = Rp[WS(rs, 1)];
			 Ta = T8 + T9;
			 Ty = T8 - T9;
			 T5 = Rp[WS(rs, 2)];
			 T6 = Rm[0];
			 T7 = T5 + T6;
			 Tx = T5 - T6;
		    }
		    Ts = T7 - Ta;
		    TQ = Tx - Ty;
		    Tb = T7 + Ta;
		    Tc = FNMS(KP500000000, Tb, T4);
		    Tz = Tx + Ty;
		    TA = Tw + Tz;
		    TU = FNMS(KP500000000, Tz, Tw);
	       }
	       {
		    E TN, TY, TR, TW, TS, TZ, TO, TX, T10, TT;
		    TN = T4 + Tb;
		    TY = Tp + Tq;
		    TR = FMA(KP866025403, TQ, TP);
		    TW = FNMS(KP866025403, TV, TU);
		    TO = W[0];
		    TS = TO * TR;
		    TZ = TO * TW;
		    TT = W[1];
		    TX = FMA(TT, TW, TS);
		    T10 = FNMS(TT, TR, TZ);
		    Rp[0] = TN - TX;
		    Ip[0] = TY + T10;
		    Rm[0] = TN + TX;
		    Im[0] = T10 - TY;
	       }
	       {
		    E Tt, TH, Tv, TB, TC, TL, T1, Tl, Tm, TJ, Tk;
		    Tt = FNMS(KP866025403, Ts, Tr);
		    TH = TD + TG;
		    Tv = W[4];
		    TB = Tv * TA;
		    TC = W[5];
		    TL = TC * TA;
		    Tk = FNMS(KP866025403, Tj, Tc);
		    T1 = W[3];
		    Tl = T1 * Tk;
		    Tm = W[2];
		    TJ = Tm * Tk;
		    {
			 E Tu, TI, TK, TM;
			 Tu = FMA(Tm, Tt, Tl);
			 TI = FNMS(TC, TH, TB);
			 Ip[WS(rs, 1)] = Tu + TI;
			 Im[WS(rs, 1)] = TI - Tu;
			 TK = FNMS(T1, Tt, TJ);
			 TM = FMA(Tv, TH, TL);
			 Rp[WS(rs, 1)] = TK - TM;
			 Rm[WS(rs, 1)] = TK + TM;
		    }
	       }
	       {
		    E T15, T11, T13, T14, T1d, T18, T1b, T19, T1f, T12, T17;
		    T15 = FMA(KP866025403, Ts, Tr);
		    T12 = FMA(KP866025403, Tj, Tc);
		    T11 = W[6];
		    T13 = T11 * T12;
		    T14 = W[7];
		    T1d = T14 * T12;
		    T18 = FNMS(KP866025403, TQ, TP);
		    T1b = FMA(KP866025403, TV, TU);
		    T17 = W[8];
		    T19 = T17 * T18;
		    T1f = T17 * T1b;
		    {
			 E T16, T1e, T1c, T1g, T1a;
			 T16 = FNMS(T14, T15, T13);
			 T1e = FMA(T11, T15, T1d);
			 T1a = W[9];
			 T1c = FMA(T1a, T1b, T19);
			 T1g = FNMS(T1a, T18, T1f);
			 Rp[WS(rs, 2)] = T16 - T1c;
			 Ip[WS(rs, 2)] = T1e + T1g;
			 Rm[WS(rs, 2)] = T16 + T1c;
			 Im[WS(rs, 2)] = T1g - T1e;
		    }
	       }
	  }
     }
}

static const tw_instr twinstr[] = {
     {TW_FULL, 1, 6},
     {TW_NEXT, 1, 0}
};

static const hc2c_desc desc = { 6, "hc2cbdft_6", twinstr, &GENUS, {36, 10, 22, 0} };

void X(codelet_hc2cbdft_6) (planner *p) {
     X(khc2c_register) (p, hc2cbdft_6, &desc, HC2C_VIA_DFT);
}
#else

/* Generated by: ../../../genfft/gen_hc2cdft.native -compact -variables 4 -pipeline-latency 4 -sign 1 -n 6 -dif -name hc2cbdft_6 -include rdft/scalar/hc2cb.h */

/*
 * This function contains 58 FP additions, 28 FP multiplications,
 * (or, 44 additions, 14 multiplications, 14 fused multiply/add),
 * 29 stack variables, 2 constants, and 24 memory accesses
 */
#include "rdft/scalar/hc2cb.h"

static void hc2cbdft_6(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     {
	  INT m;
	  for (m = mb, W = W + ((mb - 1) * 10); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 10, MAKE_VOLATILE_STRIDE(24, rs)) {
	       E T4, Tv, Tr, TL, Tb, Tc, Ty, TP, To, TB, Tj, TQ, Tp, Tq, TE;
	       E TM;
	       {
		    E Ta, Tx, T7, Tw, T2, T3;
		    T2 = Rp[0];
		    T3 = Rm[WS(rs, 2)];
		    T4 = T2 + T3;
		    Tv = T2 - T3;
		    {
			 E T8, T9, T5, T6;
			 T8 = Rm[WS(rs, 1)];
			 T9 = Rp[WS(rs, 1)];
			 Ta = T8 + T9;
			 Tx = T8 - T9;
			 T5 = Rp[WS(rs, 2)];
			 T6 = Rm[0];
			 T7 = T5 + T6;
			 Tw = T5 - T6;
		    }
		    Tr = KP866025403 * (T7 - Ta);
		    TL = KP866025403 * (Tw - Tx);
		    Tb = T7 + Ta;
		    Tc = FNMS(KP500000000, Tb, T4);
		    Ty = Tw + Tx;
		    TP = FNMS(KP500000000, Ty, Tv);
	       }
	       {
		    E Tf, TC, Ti, TD, Td, Te;
		    Td = Ip[WS(rs, 1)];
		    Te = Im[WS(rs, 1)];
		    Tf = Td - Te;
		    TC = Te + Td;
		    {
			 E Tm, Tn, Tg, Th;
			 Tm = Ip[0];
			 Tn = Im[WS(rs, 2)];
			 To = Tm - Tn;
			 TB = Tm + Tn;
			 Tg = Ip[WS(rs, 2)];
			 Th = Im[0];
			 Ti = Tg - Th;
			 TD = Tg + Th;
		    }
		    Tj = KP866025403 * (Tf - Ti);
		    TQ = KP866025403 * (TC + TD);
		    Tp = Tf + Ti;
		    Tq = FNMS(KP500000000, Tp, To);
		    TE = TC - TD;
		    TM = FMA(KP500000000, TE, TB);
	       }
	       {
		    E TJ, TT, TS, TU;
		    TJ = T4 + Tb;
		    TT = To + Tp;
		    {
			 E TN, TR, TK, TO;
			 TN = TL + TM;
			 TR = TP - TQ;
			 TK = W[0];
			 TO = W[1];
			 TS = FMA(TK, TN, TO * TR);
			 TU = FNMS(TO, TN, TK * TR);
		    }
		    Rp[0] = TJ - TS;
		    Ip[0] = TT + TU;
		    Rm[0] = TJ + TS;
		    Im[0] = TU - TT;
	       }
	       {
		    E TZ, T15, T14, T16;
		    {
			 E TW, TY, TV, TX;
			 TW = Tc + Tj;
			 TY = Tr + Tq;
			 TV = W[6];
			 TX = W[7];
			 TZ = FNMS(TX, TY, TV * TW);
			 T15 = FMA(TX, TW, TV * TY);
		    }
		    {
			 E T11, T13, T10, T12;
			 T11 = TM - TL;
			 T13 = TP + TQ;
			 T10 = W[8];
			 T12 = W[9];
			 T14 = FMA(T10, T11, T12 * T13);
			 T16 = FNMS(T12, T11, T10 * T13);
		    }
		    Rp[WS(rs, 2)] = TZ - T14;
		    Ip[WS(rs, 2)] = T15 + T16;
		    Rm[WS(rs, 2)] = TZ + T14;
		    Im[WS(rs, 2)] = T16 - T15;
	       }
	       {
		    E Tt, TH, TG, TI;
		    {
			 E Tk, Ts, T1, Tl;
			 Tk = Tc - Tj;
			 Ts = Tq - Tr;
			 T1 = W[3];
			 Tl = W[2];
			 Tt = FMA(T1, Tk, Tl * Ts);
			 TH = FNMS(T1, Ts, Tl * Tk);
		    }
		    {
			 E Tz, TF, Tu, TA;
			 Tz = Tv + Ty;
			 TF = TB - TE;
			 Tu = W[4];
			 TA = W[5];
			 TG = FNMS(TA, TF, Tu * Tz);
			 TI = FMA(TA, Tz, Tu * TF);
		    }
		    Ip[WS(rs, 1)] = Tt + TG;
		    Rp[WS(rs, 1)] = TH - TI;
		    Im[WS(rs, 1)] = TG - Tt;
		    Rm[WS(rs, 1)] = TH + TI;
	       }
	  }
     }
}

static const tw_instr twinstr[] = {
     {TW_FULL, 1, 6},
     {TW_NEXT, 1, 0}
};

static const hc2c_desc desc = { 6, "hc2cbdft_6", twinstr, &GENUS, {44, 14, 14, 0} };

void X(codelet_hc2cbdft_6) (planner *p) {
     X(khc2c_register) (p, hc2cbdft_6, &desc, HC2C_VIA_DFT);
}
#endif