annotate fft/fftw/fftw-3.3.4/dft/simd/common/n1bv_12.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 13:46:51 EST 2014 */

#include "codelet-dft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_notw_c.native -fma -reorder-insns -schedule-for-pipeline -simd -compact -variables 4 -pipeline-latency 8 -sign 1 -n 12 -name n1bv_12 -include n1b.h */

/*
 * This function contains 48 FP additions, 20 FP multiplications,
 * (or, 30 additions, 2 multiplications, 18 fused multiply/add),
 * 49 stack variables, 2 constants, and 24 memory accesses
 */
#include "n1b.h"

static void n1bv_12(const R *ri, const R *ii, R *ro, R *io, stride is, stride os, INT v, INT ivs, INT ovs)
{
     DVK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DVK(KP500000000, +0.500000000000000000000000000000000000000000000);
     {
	  INT i;
	  const R *xi;
	  R *xo;
	  xi = ii;
	  xo = io;
	  for (i = v; i > 0; i = i - VL, xi = xi + (VL * ivs), xo = xo + (VL * ovs), MAKE_VOLATILE_STRIDE(24, is), MAKE_VOLATILE_STRIDE(24, os)) {
	       V T1, T6, Tc, Th, Td, Te, Ti, Tz, T4, TA, T9, Tj, Tf, Tw;
	       {
		    V T2, T3, T7, T8;
		    T1 = LD(&(xi[0]), ivs, &(xi[0]));
		    T6 = LD(&(xi[WS(is, 6)]), ivs, &(xi[0]));
		    T2 = LD(&(xi[WS(is, 4)]), ivs, &(xi[0]));
		    T3 = LD(&(xi[WS(is, 8)]), ivs, &(xi[0]));
		    T7 = LD(&(xi[WS(is, 10)]), ivs, &(xi[0]));
		    T8 = LD(&(xi[WS(is, 2)]), ivs, &(xi[0]));
		    Tc = LD(&(xi[WS(is, 3)]), ivs, &(xi[WS(is, 1)]));
		    Th = LD(&(xi[WS(is, 9)]), ivs, &(xi[WS(is, 1)]));
		    Td = LD(&(xi[WS(is, 7)]), ivs, &(xi[WS(is, 1)]));
		    Te = LD(&(xi[WS(is, 11)]), ivs, &(xi[WS(is, 1)]));
		    Ti = LD(&(xi[WS(is, 1)]), ivs, &(xi[WS(is, 1)]));
		    Tz = VSUB(T2, T3);
		    T4 = VADD(T2, T3);
		    TA = VSUB(T7, T8);
		    T9 = VADD(T7, T8);
		    Tj = LD(&(xi[WS(is, 5)]), ivs, &(xi[WS(is, 1)]));
	       }
	       Tf = VADD(Td, Te);
	       Tw = VSUB(Td, Te);
	       {
		    V T5, Tp, TJ, TB, Ta, Tq, Tk, Tx, Tg, Ts;
		    T5 = VADD(T1, T4);
		    Tp = VFNMS(LDK(KP500000000), T4, T1);
		    TJ = VSUB(Tz, TA);
		    TB = VADD(Tz, TA);
		    Ta = VADD(T6, T9);
		    Tq = VFNMS(LDK(KP500000000), T9, T6);
		    Tk = VADD(Ti, Tj);
		    Tx = VSUB(Tj, Ti);
		    Tg = VADD(Tc, Tf);
		    Ts = VFNMS(LDK(KP500000000), Tf, Tc);
		    {
			 V Tr, TF, Tb, Tn, TG, Ty, Tl, Tt;
			 Tr = VADD(Tp, Tq);
			 TF = VSUB(Tp, Tq);
			 Tb = VSUB(T5, Ta);
			 Tn = VADD(T5, Ta);
			 TG = VADD(Tw, Tx);
			 Ty = VSUB(Tw, Tx);
			 Tl = VADD(Th, Tk);
			 Tt = VFNMS(LDK(KP500000000), Tk, Th);
			 {
			      V TC, TE, TH, TL, Tu, TI, Tm, To;
			      TC = VMUL(LDK(KP866025403), VSUB(Ty, TB));
			      TE = VMUL(LDK(KP866025403), VADD(TB, Ty));
			      TH = VFNMS(LDK(KP866025403), TG, TF);
			      TL = VFMA(LDK(KP866025403), TG, TF);
			      Tu = VADD(Ts, Tt);
			      TI = VSUB(Ts, Tt);
			      Tm = VSUB(Tg, Tl);
			      To = VADD(Tg, Tl);
			      {
				   V TK, TM, Tv, TD;
				   TK = VFMA(LDK(KP866025403), TJ, TI);
				   TM = VFNMS(LDK(KP866025403), TJ, TI);
				   Tv = VSUB(Tr, Tu);
				   TD = VADD(Tr, Tu);
				   ST(&(xo[0]), VADD(Tn, To), ovs, &(xo[0]));
				   ST(&(xo[WS(os, 6)]), VSUB(Tn, To), ovs, &(xo[0]));
				   ST(&(xo[WS(os, 9)]), VFMAI(Tm, Tb), ovs, &(xo[WS(os, 1)]));
				   ST(&(xo[WS(os, 3)]), VFNMSI(Tm, Tb), ovs, &(xo[WS(os, 1)]));
				   ST(&(xo[WS(os, 5)]), VFMAI(TM, TL), ovs, &(xo[WS(os, 1)]));
				   ST(&(xo[WS(os, 7)]), VFNMSI(TM, TL), ovs, &(xo[WS(os, 1)]));
				   ST(&(xo[WS(os, 11)]), VFNMSI(TK, TH), ovs, &(xo[WS(os, 1)]));
				   ST(&(xo[WS(os, 1)]), VFMAI(TK, TH), ovs, &(xo[WS(os, 1)]));
				   ST(&(xo[WS(os, 8)]), VFNMSI(TE, TD), ovs, &(xo[0]));
				   ST(&(xo[WS(os, 4)]), VFMAI(TE, TD), ovs, &(xo[0]));
				   ST(&(xo[WS(os, 2)]), VFMAI(TC, Tv), ovs, &(xo[0]));
				   ST(&(xo[WS(os, 10)]), VFNMSI(TC, Tv), ovs, &(xo[0]));
			      }
			 }
		    }
	       }
	  }
     }
     VLEAVE();
}

static const kdft_desc desc = { 12, XSIMD_STRING("n1bv_12"), {30, 2, 18, 0}, &GENUS, 0, 0, 0, 0 };

void XSIMD(codelet_n1bv_12) (planner *p) {
     X(kdft_register) (p, n1bv_12, &desc);
}

#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_notw_c.native -simd -compact -variables 4 -pipeline-latency 8 -sign 1 -n 12 -name n1bv_12 -include n1b.h */

/*
 * This function contains 48 FP additions, 8 FP multiplications,
 * (or, 44 additions, 4 multiplications, 4 fused multiply/add),
 * 27 stack variables, 2 constants, and 24 memory accesses
 */
#include "n1b.h"

static void n1bv_12(const R *ri, const R *ii, R *ro, R *io, stride is, stride os, INT v, INT ivs, INT ovs)
{
     DVK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DVK(KP500000000, +0.500000000000000000000000000000000000000000000);
     {
	  INT i;
	  const R *xi;
	  R *xo;
	  xi = ii;
	  xo = io;
	  for (i = v; i > 0; i = i - VL, xi = xi + (VL * ivs), xo = xo + (VL * ovs), MAKE_VOLATILE_STRIDE(24, is), MAKE_VOLATILE_STRIDE(24, os)) {
	       V T5, Ta, TG, TF, Ty, Tm, Ti, Tp, TJ, TI, Tx, Ts;
	       {
		    V T1, T6, T4, Tk, T9, Tl;
		    T1 = LD(&(xi[0]), ivs, &(xi[0]));
		    T6 = LD(&(xi[WS(is, 6)]), ivs, &(xi[0]));
		    {
			 V T2, T3, T7, T8;
			 T2 = LD(&(xi[WS(is, 4)]), ivs, &(xi[0]));
			 T3 = LD(&(xi[WS(is, 8)]), ivs, &(xi[0]));
			 T4 = VADD(T2, T3);
			 Tk = VSUB(T2, T3);
			 T7 = LD(&(xi[WS(is, 10)]), ivs, &(xi[0]));
			 T8 = LD(&(xi[WS(is, 2)]), ivs, &(xi[0]));
			 T9 = VADD(T7, T8);
			 Tl = VSUB(T7, T8);
		    }
		    T5 = VFNMS(LDK(KP500000000), T4, T1);
		    Ta = VFNMS(LDK(KP500000000), T9, T6);
		    TG = VADD(T6, T9);
		    TF = VADD(T1, T4);
		    Ty = VADD(Tk, Tl);
		    Tm = VMUL(LDK(KP866025403), VSUB(Tk, Tl));
	       }
	       {
		    V Tn, Tq, Te, To, Th, Tr;
		    Tn = LD(&(xi[WS(is, 3)]), ivs, &(xi[WS(is, 1)]));
		    Tq = LD(&(xi[WS(is, 9)]), ivs, &(xi[WS(is, 1)]));
		    {
			 V Tc, Td, Tf, Tg;
			 Tc = LD(&(xi[WS(is, 7)]), ivs, &(xi[WS(is, 1)]));
			 Td = LD(&(xi[WS(is, 11)]), ivs, &(xi[WS(is, 1)]));
			 Te = VSUB(Tc, Td);
			 To = VADD(Tc, Td);
			 Tf = LD(&(xi[WS(is, 1)]), ivs, &(xi[WS(is, 1)]));
			 Tg = LD(&(xi[WS(is, 5)]), ivs, &(xi[WS(is, 1)]));
			 Th = VSUB(Tf, Tg);
			 Tr = VADD(Tf, Tg);
		    }
		    Ti = VMUL(LDK(KP866025403), VSUB(Te, Th));
		    Tp = VFNMS(LDK(KP500000000), To, Tn);
		    TJ = VADD(Tq, Tr);
		    TI = VADD(Tn, To);
		    Tx = VADD(Te, Th);
		    Ts = VFNMS(LDK(KP500000000), Tr, Tq);
	       }
	       {
		    V TH, TK, TL, TM;
		    TH = VSUB(TF, TG);
		    TK = VBYI(VSUB(TI, TJ));
		    ST(&(xo[WS(os, 3)]), VSUB(TH, TK), ovs, &(xo[WS(os, 1)]));
		    ST(&(xo[WS(os, 9)]), VADD(TH, TK), ovs, &(xo[WS(os, 1)]));
		    TL = VADD(TF, TG);
		    TM = VADD(TI, TJ);
		    ST(&(xo[WS(os, 6)]), VSUB(TL, TM), ovs, &(xo[0]));
		    ST(&(xo[0]), VADD(TL, TM), ovs, &(xo[0]));
	       }
	       {
		    V Tj, Tv, Tu, Tw, Tb, Tt;
		    Tb = VSUB(T5, Ta);
		    Tj = VSUB(Tb, Ti);
		    Tv = VADD(Tb, Ti);
		    Tt = VSUB(Tp, Ts);
		    Tu = VBYI(VADD(Tm, Tt));
		    Tw = VBYI(VSUB(Tt, Tm));
		    ST(&(xo[WS(os, 11)]), VSUB(Tj, Tu), ovs, &(xo[WS(os, 1)]));
		    ST(&(xo[WS(os, 5)]), VADD(Tv, Tw), ovs, &(xo[WS(os, 1)]));
		    ST(&(xo[WS(os, 1)]), VADD(Tj, Tu), ovs, &(xo[WS(os, 1)]));
		    ST(&(xo[WS(os, 7)]), VSUB(Tv, Tw), ovs, &(xo[WS(os, 1)]));
	       }
	       {
		    V Tz, TD, TC, TE, TA, TB;
		    Tz = VBYI(VMUL(LDK(KP866025403), VSUB(Tx, Ty)));
		    TD = VBYI(VMUL(LDK(KP866025403), VADD(Ty, Tx)));
		    TA = VADD(T5, Ta);
		    TB = VADD(Tp, Ts);
		    TC = VSUB(TA, TB);
		    TE = VADD(TA, TB);
		    ST(&(xo[WS(os, 2)]), VADD(Tz, TC), ovs, &(xo[0]));
		    ST(&(xo[WS(os, 8)]), VSUB(TE, TD), ovs, &(xo[0]));
		    ST(&(xo[WS(os, 10)]), VSUB(TC, Tz), ovs, &(xo[0]));
		    ST(&(xo[WS(os, 4)]), VADD(TD, TE), ovs, &(xo[0]));
	       }
	  }
     }
     VLEAVE();
}

static const kdft_desc desc = { 12, XSIMD_STRING("n1bv_12"), {44, 4, 4, 0}, &GENUS, 0, 0, 0, 0 };

void XSIMD(codelet_n1bv_12) (planner *p) {
     X(kdft_register) (p, n1bv_12, &desc);
}

#endif				/* HAVE_FMA */