annotate fft/fftw/fftw-3.3.4/dft/simd/common/t3fv_5.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 13:47:26 EST 2014 */

#include "codelet-dft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_twiddle_c.native -fma -reorder-insns -schedule-for-pipeline -simd -compact -variables 4 -pipeline-latency 8 -twiddle-log3 -precompute-twiddles -no-generate-bytw -n 5 -name t3fv_5 -include t3f.h */

/*
 * This function contains 22 FP additions, 23 FP multiplications,
 * (or, 13 additions, 14 multiplications, 9 fused multiply/add),
 * 30 stack variables, 4 constants, and 10 memory accesses
 */
#include "t3f.h"

static void t3fv_5(R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DVK(KP559016994, +0.559016994374947424102293417182819058860154590);
     DVK(KP250000000, +0.250000000000000000000000000000000000000000000);
     DVK(KP618033988, +0.618033988749894848204586834365638117720309180);
     DVK(KP951056516, +0.951056516295153572116439333379382143405698634);
     {
	  INT m;
	  R *x;
	  x = ri;
	  for (m = mb, W = W + (mb * ((TWVL / VL) * 4)); m < me; m = m + VL, x = x + (VL * ms), W = W + (TWVL * 4), MAKE_VOLATILE_STRIDE(5, rs)) {
	       V T2, T5, T1, T3, Td, T7, Tb;
	       T2 = LDW(&(W[0]));
	       T5 = LDW(&(W[TWVL * 2]));
	       T1 = LD(&(x[0]), ms, &(x[0]));
	       T3 = LD(&(x[WS(rs, 1)]), ms, &(x[WS(rs, 1)]));
	       Td = LD(&(x[WS(rs, 3)]), ms, &(x[WS(rs, 1)]));
	       T7 = LD(&(x[WS(rs, 4)]), ms, &(x[0]));
	       Tb = LD(&(x[WS(rs, 2)]), ms, &(x[0]));
	       {
		    V Ta, T6, T4, Te, Tc, T8;
		    Ta = VZMULJ(T2, T5);
		    T6 = VZMUL(T2, T5);
		    T4 = VZMULJ(T2, T3);
		    Te = VZMULJ(T5, Td);
		    Tc = VZMULJ(Ta, Tb);
		    T8 = VZMULJ(T6, T7);
		    {
			 V Tf, Tl, T9, Tk;
			 Tf = VADD(Tc, Te);
			 Tl = VSUB(Tc, Te);
			 T9 = VADD(T4, T8);
			 Tk = VSUB(T4, T8);
			 {
			      V Ti, Tg, To, Tm, Th, Tn, Tj;
			      Ti = VSUB(T9, Tf);
			      Tg = VADD(T9, Tf);
			      To = VMUL(LDK(KP951056516), VFNMS(LDK(KP618033988), Tk, Tl));
			      Tm = VMUL(LDK(KP951056516), VFMA(LDK(KP618033988), Tl, Tk));
			      Th = VFNMS(LDK(KP250000000), Tg, T1);
			      ST(&(x[0]), VADD(T1, Tg), ms, &(x[0]));
			      Tn = VFNMS(LDK(KP559016994), Ti, Th);
			      Tj = VFMA(LDK(KP559016994), Ti, Th);
			      ST(&(x[WS(rs, 2)]), VFMAI(To, Tn), ms, &(x[0]));
			      ST(&(x[WS(rs, 3)]), VFNMSI(To, Tn), ms, &(x[WS(rs, 1)]));
			      ST(&(x[WS(rs, 4)]), VFMAI(Tm, Tj), ms, &(x[0]));
			      ST(&(x[WS(rs, 1)]), VFNMSI(Tm, Tj), ms, &(x[WS(rs, 1)]));
			 }
		    }
	       }
	  }
     }
     VLEAVE();
}

static const tw_instr twinstr[] = {
     VTW(0, 1),
     VTW(0, 3),
     {TW_NEXT, VL, 0}
};

static const ct_desc desc = { 5, XSIMD_STRING("t3fv_5"), twinstr, &GENUS, {13, 14, 9, 0}, 0, 0, 0 };

void XSIMD(codelet_t3fv_5) (planner *p) {
     X(kdft_dit_register) (p, t3fv_5, &desc);
}
#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_twiddle_c.native -simd -compact -variables 4 -pipeline-latency 8 -twiddle-log3 -precompute-twiddles -no-generate-bytw -n 5 -name t3fv_5 -include t3f.h */

/*
 * This function contains 22 FP additions, 18 FP multiplications,
 * (or, 19 additions, 15 multiplications, 3 fused multiply/add),
 * 24 stack variables, 4 constants, and 10 memory accesses
 */
#include "t3f.h"

static void t3fv_5(R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms)
{
     DVK(KP250000000, +0.250000000000000000000000000000000000000000000);
     DVK(KP559016994, +0.559016994374947424102293417182819058860154590);
     DVK(KP587785252, +0.587785252292473129168705954639072768597652438);
     DVK(KP951056516, +0.951056516295153572116439333379382143405698634);
     {
	  INT m;
	  R *x;
	  x = ri;
	  for (m = mb, W = W + (mb * ((TWVL / VL) * 4)); m < me; m = m + VL, x = x + (VL * ms), W = W + (TWVL * 4), MAKE_VOLATILE_STRIDE(5, rs)) {
	       V T1, T4, T5, T9;
	       T1 = LDW(&(W[0]));
	       T4 = LDW(&(W[TWVL * 2]));
	       T5 = VZMUL(T1, T4);
	       T9 = VZMULJ(T1, T4);
	       {
		    V Tg, Tk, Tl, T8, Te, Th;
		    Tg = LD(&(x[0]), ms, &(x[0]));
		    {
			 V T3, Td, T7, Tb;
			 {
			      V T2, Tc, T6, Ta;
			      T2 = LD(&(x[WS(rs, 1)]), ms, &(x[WS(rs, 1)]));
			      T3 = VZMULJ(T1, T2);
			      Tc = LD(&(x[WS(rs, 3)]), ms, &(x[WS(rs, 1)]));
			      Td = VZMULJ(T4, Tc);
			      T6 = LD(&(x[WS(rs, 4)]), ms, &(x[0]));
			      T7 = VZMULJ(T5, T6);
			      Ta = LD(&(x[WS(rs, 2)]), ms, &(x[0]));
			      Tb = VZMULJ(T9, Ta);
			 }
			 Tk = VSUB(T3, T7);
			 Tl = VSUB(Tb, Td);
			 T8 = VADD(T3, T7);
			 Te = VADD(Tb, Td);
			 Th = VADD(T8, Te);
		    }
		    ST(&(x[0]), VADD(Tg, Th), ms, &(x[0]));
		    {
			 V Tm, Tn, Tj, To, Tf, Ti;
			 Tm = VBYI(VFMA(LDK(KP951056516), Tk, VMUL(LDK(KP587785252), Tl)));
			 Tn = VBYI(VFNMS(LDK(KP587785252), Tk, VMUL(LDK(KP951056516), Tl)));
			 Tf = VMUL(LDK(KP559016994), VSUB(T8, Te));
			 Ti = VFNMS(LDK(KP250000000), Th, Tg);
			 Tj = VADD(Tf, Ti);
			 To = VSUB(Ti, Tf);
			 ST(&(x[WS(rs, 1)]), VSUB(Tj, Tm), ms, &(x[WS(rs, 1)]));
			 ST(&(x[WS(rs, 3)]), VSUB(To, Tn), ms, &(x[WS(rs, 1)]));
			 ST(&(x[WS(rs, 4)]), VADD(Tm, Tj), ms, &(x[0]));
			 ST(&(x[WS(rs, 2)]), VADD(Tn, To), ms, &(x[0]));
		    }
	       }
	  }
     }
     VLEAVE();
}

static const tw_instr twinstr[] = {
     VTW(0, 1),
     VTW(0, 3),
     {TW_NEXT, VL, 0}
};

static const ct_desc desc = { 5, XSIMD_STRING("t3fv_5"), twinstr, &GENUS, {19, 15, 3, 0}, 0, 0, 0 };

void XSIMD(codelet_t3fv_5) (planner *p) {
     X(kdft_dit_register) (p, t3fv_5, &desc);
}
#endif				/* HAVE_FMA */