comparison src/fftw-3.3.3/rdft/scalar/r2cf/hc2cfdft_2.c @ 10:37bf6b4a2645

Add FFTW3

+/*
+ * Copyright (c) 2003, 2007-11 Matteo Frigo
+ * Copyright (c) 2003, 2007-11 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 Sun Nov 25 07:40:44 EST 2012 */
+
+#include "codelet-rdft.h"
+
+#ifdef HAVE_FMA
+
+/* Generated by: ../../../genfft/gen_hc2cdft.native -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -n 2 -dit -name hc2cfdft_2 -include hc2cf.h */
+
+/*
+ * This function contains 10 FP additions, 8 FP multiplications,
+ * (or, 8 additions, 6 multiplications, 2 fused multiply/add),
+ * 12 stack variables, 1 constants, and 8 memory accesses
+ */
+#include "hc2cf.h"
+
+static void hc2cfdft_2(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
+     {
+	  INT m;
+	  for (m = mb, W = W + ((mb - 1) * 2); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 2, MAKE_VOLATILE_STRIDE(8, rs)) {
+	       E T9, Ta, T3, Tc, T7, T4;
+	       {
+		    E T1, T2, T5, T6;
+		    T1 = Ip[0];
+		    T2 = Im[0];
+		    T5 = Rm[0];
+		    T6 = Rp[0];
+		    T9 = W[1];
+		    Ta = T1 + T2;
+		    T3 = T1 - T2;
+		    Tc = T6 + T5;
+		    T7 = T5 - T6;
+		    T4 = W[0];
+	       }
+	       {
+		    E Td, T8, Te, Tb;
+		    Td = T9 * T7;
+		    T8 = T4 * T7;
+		    Te = FMA(T4, Ta, Td);
+		    Tb = FNMS(T9, Ta, T8);
+		    Rp[0] = KP500000000 * (Tc + Te);
+		    Rm[0] = KP500000000 * (Tc - Te);
+		    Im[0] = KP500000000 * (Tb - T3);
+		    Ip[0] = KP500000000 * (T3 + Tb);
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_FULL, 1, 2},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2c_desc desc = { 2, "hc2cfdft_2", twinstr, &GENUS, {8, 6, 2, 0} };
+
+void X(codelet_hc2cfdft_2) (planner *p) {
+     X(khc2c_register) (p, hc2cfdft_2, &desc, HC2C_VIA_DFT);
+}
+#else				/* HAVE_FMA */
+
+/* Generated by: ../../../genfft/gen_hc2cdft.native -compact -variables 4 -pipeline-latency 4 -n 2 -dit -name hc2cfdft_2 -include hc2cf.h */
+
+/*
+ * This function contains 10 FP additions, 8 FP multiplications,
+ * (or, 8 additions, 6 multiplications, 2 fused multiply/add),
+ * 10 stack variables, 1 constants, and 8 memory accesses
+ */
+#include "hc2cf.h"
+
+static void hc2cfdft_2(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
+     {
+	  INT m;
+	  for (m = mb, W = W + ((mb - 1) * 2); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 2, MAKE_VOLATILE_STRIDE(8, rs)) {
+	       E T3, T9, T7, Tb;
+	       {
+		    E T1, T2, T5, T6;
+		    T1 = Ip[0];
+		    T2 = Im[0];
+		    T3 = T1 - T2;
+		    T9 = T1 + T2;
+		    T5 = Rm[0];
+		    T6 = Rp[0];
+		    T7 = T5 - T6;
+		    Tb = T6 + T5;
+	       }
+	       {
+		    E Ta, Tc, T4, T8;
+		    T4 = W[0];
+		    T8 = W[1];
+		    Ta = FNMS(T8, T9, T4 * T7);
+		    Tc = FMA(T8, T7, T4 * T9);
+		    Ip[0] = KP500000000 * (T3 + Ta);
+		    Rp[0] = KP500000000 * (Tb + Tc);
+		    Im[0] = KP500000000 * (Ta - T3);
+		    Rm[0] = KP500000000 * (Tb - Tc);
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_FULL, 1, 2},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2c_desc desc = { 2, "hc2cfdft_2", twinstr, &GENUS, {8, 6, 2, 0} };
+
+void X(codelet_hc2cfdft_2) (planner *p) {
+     X(khc2c_register) (p, hc2cfdft_2, &desc, HC2C_VIA_DFT);
+}
+#endif				/* HAVE_FMA */