annotate fft/fftw/fftw-3.3.4/rdft/scalar/r2cf/r2cf_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 13:49:07 EST 2014 */

#include "codelet-rdft.h"

#ifdef HAVE_FMA

/* Generated by: ../../../genfft/gen_r2cf.native -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -n 12 -name r2cf_12 -include r2cf.h */

/*
 * This function contains 38 FP additions, 10 FP multiplications,
 * (or, 30 additions, 2 multiplications, 8 fused multiply/add),
 * 31 stack variables, 2 constants, and 24 memory accesses
 */
#include "r2cf.h"

static void r2cf_12(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
{
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     {
	  INT i;
	  for (i = v; i > 0; i = i - 1, R0 = R0 + ivs, R1 = R1 + ivs, Cr = Cr + ovs, Ci = Ci + ovs, MAKE_VOLATILE_STRIDE(48, rs), MAKE_VOLATILE_STRIDE(48, csr), MAKE_VOLATILE_STRIDE(48, csi)) {
	       E Tm, T6, Ty, Tp, T5, Tk, Tt, Tb, Tc, Td, T9, Tn;
	       {
		    E T1, Tg, Th, Ti, T4, T2, T3, T7, T8, Tj;
		    T1 = R0[0];
		    T2 = R0[WS(rs, 2)];
		    T3 = R0[WS(rs, 4)];
		    Tg = R1[WS(rs, 1)];
		    Th = R1[WS(rs, 3)];
		    Ti = R1[WS(rs, 5)];
		    T4 = T2 + T3;
		    Tm = T3 - T2;
		    T6 = R0[WS(rs, 3)];
		    Ty = Ti - Th;
		    Tj = Th + Ti;
		    Tp = FNMS(KP500000000, T4, T1);
		    T5 = T1 + T4;
		    T7 = R0[WS(rs, 5)];
		    Tk = FNMS(KP500000000, Tj, Tg);
		    Tt = Tg + Tj;
		    T8 = R0[WS(rs, 1)];
		    Tb = R1[WS(rs, 4)];
		    Tc = R1[0];
		    Td = R1[WS(rs, 2)];
		    T9 = T7 + T8;
		    Tn = T8 - T7;
	       }
	       {
		    E Te, Tz, To, TC;
		    Te = Tc + Td;
		    Tz = Td - Tc;
		    To = Tm - Tn;
		    TC = Tm + Tn;
		    {
			 E Ta, Tq, TA, TB;
			 Ta = T6 + T9;
			 Tq = FNMS(KP500000000, T9, T6);
			 TA = Ty - Tz;
			 TB = Ty + Tz;
			 {
			      E Tf, Tu, Tx, Tr;
			      Tf = FNMS(KP500000000, Te, Tb);
			      Tu = Tb + Te;
			      Tx = Tp - Tq;
			      Tr = Tp + Tq;
			      {
				   E Tv, Tw, Tl, Ts;
				   Tv = T5 + Ta;
				   Cr[WS(csr, 3)] = T5 - Ta;
				   Ci[WS(csi, 4)] = KP866025403 * (TC + TB);
				   Ci[WS(csi, 2)] = KP866025403 * (TB - TC);
				   Tw = Tt + Tu;
				   Ci[WS(csi, 3)] = Tt - Tu;
				   Tl = Tf - Tk;
				   Ts = Tk + Tf;
				   Cr[WS(csr, 1)] = FMA(KP866025403, TA, Tx);
				   Cr[WS(csr, 5)] = FNMS(KP866025403, TA, Tx);
				   Cr[0] = Tv + Tw;
				   Cr[WS(csr, 6)] = Tv - Tw;
				   Cr[WS(csr, 4)] = Tr + Ts;
				   Cr[WS(csr, 2)] = Tr - Ts;
				   Ci[WS(csi, 5)] = FNMS(KP866025403, To, Tl);
				   Ci[WS(csi, 1)] = FMA(KP866025403, To, Tl);
			      }
			 }
		    }
	       }
	  }
     }
}

static const kr2c_desc desc = { 12, "r2cf_12", {30, 2, 8, 0}, &GENUS };

void X(codelet_r2cf_12) (planner *p) {
     X(kr2c_register) (p, r2cf_12, &desc);
}

#else				/* HAVE_FMA */

/* Generated by: ../../../genfft/gen_r2cf.native -compact -variables 4 -pipeline-latency 4 -n 12 -name r2cf_12 -include r2cf.h */

/*
 * This function contains 38 FP additions, 8 FP multiplications,
 * (or, 34 additions, 4 multiplications, 4 fused multiply/add),
 * 21 stack variables, 2 constants, and 24 memory accesses
 */
#include "r2cf.h"

static void r2cf_12(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
{
     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
     {
	  INT i;
	  for (i = v; i > 0; i = i - 1, R0 = R0 + ivs, R1 = R1 + ivs, Cr = Cr + ovs, Ci = Ci + ovs, MAKE_VOLATILE_STRIDE(48, rs), MAKE_VOLATILE_STRIDE(48, csr), MAKE_VOLATILE_STRIDE(48, csi)) {
	       E T5, Tp, Tb, Tn, Ty, Tt, Ta, Tq, Tc, Ti, Tz, Tu, Td, To;
	       {
		    E T1, T2, T3, T4;
		    T1 = R0[0];
		    T2 = R0[WS(rs, 2)];
		    T3 = R0[WS(rs, 4)];
		    T4 = T2 + T3;
		    T5 = T1 + T4;
		    Tp = FNMS(KP500000000, T4, T1);
		    Tb = T3 - T2;
	       }
	       {
		    E Tj, Tk, Tl, Tm;
		    Tj = R1[WS(rs, 1)];
		    Tk = R1[WS(rs, 3)];
		    Tl = R1[WS(rs, 5)];
		    Tm = Tk + Tl;
		    Tn = FNMS(KP500000000, Tm, Tj);
		    Ty = Tl - Tk;
		    Tt = Tj + Tm;
	       }
	       {
		    E T6, T7, T8, T9;
		    T6 = R0[WS(rs, 3)];
		    T7 = R0[WS(rs, 5)];
		    T8 = R0[WS(rs, 1)];
		    T9 = T7 + T8;
		    Ta = T6 + T9;
		    Tq = FNMS(KP500000000, T9, T6);
		    Tc = T8 - T7;
	       }
	       {
		    E Te, Tf, Tg, Th;
		    Te = R1[WS(rs, 4)];
		    Tf = R1[0];
		    Tg = R1[WS(rs, 2)];
		    Th = Tf + Tg;
		    Ti = FNMS(KP500000000, Th, Te);
		    Tz = Tg - Tf;
		    Tu = Te + Th;
	       }
	       Cr[WS(csr, 3)] = T5 - Ta;
	       Ci[WS(csi, 3)] = Tt - Tu;
	       Td = KP866025403 * (Tb - Tc);
	       To = Ti - Tn;
	       Ci[WS(csi, 1)] = Td + To;
	       Ci[WS(csi, 5)] = To - Td;
	       {
		    E Tx, TA, Tv, Tw;
		    Tx = Tp - Tq;
		    TA = KP866025403 * (Ty - Tz);
		    Cr[WS(csr, 5)] = Tx - TA;
		    Cr[WS(csr, 1)] = Tx + TA;
		    Tv = T5 + Ta;
		    Tw = Tt + Tu;
		    Cr[WS(csr, 6)] = Tv - Tw;
		    Cr[0] = Tv + Tw;
	       }
	       {
		    E Tr, Ts, TB, TC;
		    Tr = Tp + Tq;
		    Ts = Tn + Ti;
		    Cr[WS(csr, 2)] = Tr - Ts;
		    Cr[WS(csr, 4)] = Tr + Ts;
		    TB = Ty + Tz;
		    TC = Tb + Tc;
		    Ci[WS(csi, 2)] = KP866025403 * (TB - TC);
		    Ci[WS(csi, 4)] = KP866025403 * (TC + TB);
	       }
	  }
     }
}

static const kr2c_desc desc = { 12, "r2cf_12", {34, 4, 4, 0}, &GENUS };

void X(codelet_r2cf_12) (planner *p) {
     X(kr2c_register) (p, r2cf_12, &desc);
}

#endif				/* HAVE_FMA */