furnace/extern/fftw/rdft/scalar/r2cf/hf_2.c

/*
 * 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 Sep 14 10:46:12 EDT 2021 */

#include "rdft/codelet-rdft.h"

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

/* Generated by: ../../../genfft/gen_hc2hc.native -fma -compact -variables 4 -pipeline-latency 4 -n 2 -dit -name hf_2 -include rdft/scalar/hf.h */

/*
 * This function contains 6 FP additions, 4 FP multiplications,
 * (or, 4 additions, 2 multiplications, 2 fused multiply/add),
 * 11 stack variables, 0 constants, and 8 memory accesses
 */
#include "rdft/scalar/hf.h"

static void hf_2(R *cr, R *ci, const R *W, stride rs, INT mb, INT me, INT ms)
{
     {
	  INT m;
	  for (m = mb, W = W + ((mb - 1) * 2); m < me; m = m + 1, cr = cr + ms, ci = ci - ms, W = W + 2, MAKE_VOLATILE_STRIDE(4, rs)) {
	       E T1, Ta, T3, T6, T4, T8, T2, T7, T9, T5;
	       T1 = cr[0];
	       Ta = ci[0];
	       T3 = cr[WS(rs, 1)];
	       T6 = ci[WS(rs, 1)];
	       T2 = W[0];
	       T4 = T2 * T3;
	       T8 = T2 * T6;
	       T5 = W[1];
	       T7 = FMA(T5, T6, T4);
	       T9 = FNMS(T5, T3, T8);
	       ci[0] = T1 - T7;
	       cr[0] = T1 + T7;
	       cr[WS(rs, 1)] = T9 - Ta;
	       ci[WS(rs, 1)] = T9 + Ta;
	  }
     }
}

static const tw_instr twinstr[] = {
     { TW_FULL, 1, 2 },
     { TW_NEXT, 1, 0 }
};

static const hc2hc_desc desc = { 2, "hf_2", twinstr, &GENUS, { 4, 2, 2, 0 } };

void X(codelet_hf_2) (planner *p) {
     X(khc2hc_register) (p, hf_2, &desc);
}
#else

/* Generated by: ../../../genfft/gen_hc2hc.native -compact -variables 4 -pipeline-latency 4 -n 2 -dit -name hf_2 -include rdft/scalar/hf.h */

/*
 * This function contains 6 FP additions, 4 FP multiplications,
 * (or, 4 additions, 2 multiplications, 2 fused multiply/add),
 * 9 stack variables, 0 constants, and 8 memory accesses
 */
#include "rdft/scalar/hf.h"

static void hf_2(R *cr, R *ci, const R *W, stride rs, INT mb, INT me, INT ms)
{
     {
	  INT m;
	  for (m = mb, W = W + ((mb - 1) * 2); m < me; m = m + 1, cr = cr + ms, ci = ci - ms, W = W + 2, MAKE_VOLATILE_STRIDE(4, rs)) {
	       E T1, T8, T6, T7;
	       T1 = cr[0];
	       T8 = ci[0];
	       {
		    E T3, T5, T2, T4;
		    T3 = cr[WS(rs, 1)];
		    T5 = ci[WS(rs, 1)];
		    T2 = W[0];
		    T4 = W[1];
		    T6 = FMA(T2, T3, T4 * T5);
		    T7 = FNMS(T4, T3, T2 * T5);
	       }
	       ci[0] = T1 - T6;
	       cr[0] = T1 + T6;
	       cr[WS(rs, 1)] = T7 - T8;
	       ci[WS(rs, 1)] = T7 + T8;
	  }
     }
}

static const tw_instr twinstr[] = {
     { TW_FULL, 1, 2 },
     { TW_NEXT, 1, 0 }
};

static const hc2hc_desc desc = { 2, "hf_2", twinstr, &GENUS, { 4, 2, 2, 0 } };

void X(codelet_hf_2) (planner *p) {
     X(khc2hc_register) (p, hf_2, &desc);
}
#endif