comparison src/fftw-3.3.8/dft/scalar/codelets/t1_3.c @ 82:d0c2a83c1364

Add FFTW 3.3.8 source, and a Linux build

+/*
+ * 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 Thu May 24 08:04:12 EDT 2018 */
+
+#include "dft/codelet-dft.h"
+
+#if defined(ARCH_PREFERS_FMA) || defined(ISA_EXTENSION_PREFERS_FMA)
+
+/* Generated by: ../../../genfft/gen_twiddle.native -fma -compact -variables 4 -pipeline-latency 4 -n 3 -name t1_3 -include dft/scalar/t.h */
+
+/*
+ * This function contains 16 FP additions, 14 FP multiplications,
+ * (or, 6 additions, 4 multiplications, 10 fused multiply/add),
+ * 15 stack variables, 2 constants, and 12 memory accesses
+ */
+#include "dft/scalar/t.h"
+
+static void t1_3(R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
+     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
+     {
+	  INT m;
+	  for (m = mb, W = W + (mb * 4); m < me; m = m + 1, ri = ri + ms, ii = ii + ms, W = W + 4, MAKE_VOLATILE_STRIDE(6, rs)) {
+	       E T1, Tm, T7, Th, Td, Tj;
+	       T1 = ri[0];
+	       Tm = ii[0];
+	       {
+		    E T3, T6, T4, Tg, T2, T5;
+		    T3 = ri[WS(rs, 1)];
+		    T6 = ii[WS(rs, 1)];
+		    T2 = W[0];
+		    T4 = T2 * T3;
+		    Tg = T2 * T6;
+		    T5 = W[1];
+		    T7 = FMA(T5, T6, T4);
+		    Th = FNMS(T5, T3, Tg);
+	       }
+	       {
+		    E T9, Tc, Ta, Ti, T8, Tb;
+		    T9 = ri[WS(rs, 2)];
+		    Tc = ii[WS(rs, 2)];
+		    T8 = W[2];
+		    Ta = T8 * T9;
+		    Ti = T8 * Tc;
+		    Tb = W[3];
+		    Td = FMA(Tb, Tc, Ta);
+		    Tj = FNMS(Tb, T9, Ti);
+	       }
+	       {
+		    E Tk, Te, Tf, To, Tl, Tn;
+		    Tk = Th - Tj;
+		    Te = T7 + Td;
+		    Tf = FNMS(KP500000000, Te, T1);
+		    ri[0] = T1 + Te;
+		    ri[WS(rs, 1)] = FMA(KP866025403, Tk, Tf);
+		    ri[WS(rs, 2)] = FNMS(KP866025403, Tk, Tf);
+		    To = Td - T7;
+		    Tl = Th + Tj;
+		    Tn = FNMS(KP500000000, Tl, Tm);
+		    ii[0] = Tl + Tm;
+		    ii[WS(rs, 2)] = FNMS(KP866025403, To, Tn);
+		    ii[WS(rs, 1)] = FMA(KP866025403, To, Tn);
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_FULL, 0, 3},
+     {TW_NEXT, 1, 0}
+};
+
+static const ct_desc desc = { 3, "t1_3", twinstr, &GENUS, {6, 4, 10, 0}, 0, 0, 0 };
+
+void X(codelet_t1_3) (planner *p) {
+     X(kdft_dit_register) (p, t1_3, &desc);
+}
+#else
+
+/* Generated by: ../../../genfft/gen_twiddle.native -compact -variables 4 -pipeline-latency 4 -n 3 -name t1_3 -include dft/scalar/t.h */
+
+/*
+ * This function contains 16 FP additions, 12 FP multiplications,
+ * (or, 10 additions, 6 multiplications, 6 fused multiply/add),
+ * 15 stack variables, 2 constants, and 12 memory accesses
+ */
+#include "dft/scalar/t.h"
+
+static void t1_3(R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     DK(KP866025403, +0.866025403784438646763723170752936183471402627);
+     DK(KP500000000, +0.500000000000000000000000000000000000000000000);
+     {
+	  INT m;
+	  for (m = mb, W = W + (mb * 4); m < me; m = m + 1, ri = ri + ms, ii = ii + ms, W = W + 4, MAKE_VOLATILE_STRIDE(6, rs)) {
+	       E T1, Ti, T6, Te, Tb, Tf, Tc, Th;
+	       T1 = ri[0];
+	       Ti = ii[0];
+	       {
+		    E T3, T5, T2, T4;
+		    T3 = ri[WS(rs, 1)];
+		    T5 = ii[WS(rs, 1)];
+		    T2 = W[0];
+		    T4 = W[1];
+		    T6 = FMA(T2, T3, T4 * T5);
+		    Te = FNMS(T4, T3, T2 * T5);
+	       }
+	       {
+		    E T8, Ta, T7, T9;
+		    T8 = ri[WS(rs, 2)];
+		    Ta = ii[WS(rs, 2)];
+		    T7 = W[2];
+		    T9 = W[3];
+		    Tb = FMA(T7, T8, T9 * Ta);
+		    Tf = FNMS(T9, T8, T7 * Ta);
+	       }
+	       Tc = T6 + Tb;
+	       Th = Te + Tf;
+	       ri[0] = T1 + Tc;
+	       ii[0] = Th + Ti;
+	       {
+		    E Td, Tg, Tj, Tk;
+		    Td = FNMS(KP500000000, Tc, T1);
+		    Tg = KP866025403 * (Te - Tf);
+		    ri[WS(rs, 2)] = Td - Tg;
+		    ri[WS(rs, 1)] = Td + Tg;
+		    Tj = KP866025403 * (Tb - T6);
+		    Tk = FNMS(KP500000000, Th, Ti);
+		    ii[WS(rs, 1)] = Tj + Tk;
+		    ii[WS(rs, 2)] = Tk - Tj;
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_FULL, 0, 3},
+     {TW_NEXT, 1, 0}
+};
+
+static const ct_desc desc = { 3, "t1_3", twinstr, &GENUS, {10, 6, 6, 0}, 0, 0, 0 };
+
+void X(codelet_t1_3) (planner *p) {
+     X(kdft_dit_register) (p, t1_3, &desc);
+}
+#endif