diff src/fftw-3.3.3/rdft/scalar/r2cf/hf_4.c @ 10:37bf6b4a2645

Add FFTW3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.3/rdft/scalar/r2cf/hf_4.c	Wed Mar 20 15:35:50 2013 +0000
@@ -0,0 +1,193 @@
+/*
+ * 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 07:39:50 EST 2012 */
+
+#include "codelet-rdft.h"
+
+#ifdef HAVE_FMA
+
+/* Generated by: ../../../genfft/gen_hc2hc.native -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -n 4 -dit -name hf_4 -include hf.h */
+
+/*
+ * This function contains 22 FP additions, 12 FP multiplications,
+ * (or, 16 additions, 6 multiplications, 6 fused multiply/add),
+ * 31 stack variables, 0 constants, and 16 memory accesses
+ */
+#include "hf.h"
+
+static void hf_4(R *cr, R *ci, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     {
+	  INT m;
+	  for (m = mb, W = W + ((mb - 1) * 6); m < me; m = m + 1, cr = cr + ms, ci = ci - ms, W = W + 6, MAKE_VOLATILE_STRIDE(8, rs)) {
+	       E To, Te, Tm, T8, Ty, Tw, Tq, Tk;
+	       {
+		    E T1, Tv, Tu, T7, Tg, Tj, Tf, Ti, Tp, Th;
+		    T1 = cr[0];
+		    Tv = ci[0];
+		    {
+			 E T3, T6, T2, T5;
+			 T3 = cr[WS(rs, 2)];
+			 T6 = ci[WS(rs, 2)];
+			 T2 = W[2];
+			 T5 = W[3];
+			 {
+			      E Ta, Td, Tc, Tn, Tb, Tt, T4, T9;
+			      Ta = cr[WS(rs, 1)];
+			      Td = ci[WS(rs, 1)];
+			      Tt = T2 * T6;
+			      T4 = T2 * T3;
+			      T9 = W[0];
+			      Tc = W[1];
+			      Tu = FNMS(T5, T3, Tt);
+			      T7 = FMA(T5, T6, T4);
+			      Tn = T9 * Td;
+			      Tb = T9 * Ta;
+			      Tg = cr[WS(rs, 3)];
+			      Tj = ci[WS(rs, 3)];
+			      To = FNMS(Tc, Ta, Tn);
+			      Te = FMA(Tc, Td, Tb);
+			      Tf = W[4];
+			      Ti = W[5];
+			 }
+		    }
+		    Tm = T1 - T7;
+		    T8 = T1 + T7;
+		    Tp = Tf * Tj;
+		    Th = Tf * Tg;
+		    Ty = Tv - Tu;
+		    Tw = Tu + Tv;
+		    Tq = FNMS(Ti, Tg, Tp);
+		    Tk = FMA(Ti, Tj, Th);
+	       }
+	       {
+		    E Tr, Ts, Tl, Tx;
+		    Tr = To - Tq;
+		    Ts = To + Tq;
+		    Tl = Te + Tk;
+		    Tx = Tk - Te;
+		    ci[WS(rs, 3)] = Ts + Tw;
+		    cr[WS(rs, 2)] = Ts - Tw;
+		    cr[WS(rs, 1)] = Tm + Tr;
+		    ci[0] = Tm - Tr;
+		    ci[WS(rs, 2)] = Tx + Ty;
+		    cr[WS(rs, 3)] = Tx - Ty;
+		    cr[0] = T8 + Tl;
+		    ci[WS(rs, 1)] = T8 - Tl;
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_FULL, 1, 4},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2hc_desc desc = { 4, "hf_4", twinstr, &GENUS, {16, 6, 6, 0} };
+
+void X(codelet_hf_4) (planner *p) {
+     X(khc2hc_register) (p, hf_4, &desc);
+}
+#else				/* HAVE_FMA */
+
+/* Generated by: ../../../genfft/gen_hc2hc.native -compact -variables 4 -pipeline-latency 4 -n 4 -dit -name hf_4 -include hf.h */
+
+/*
+ * This function contains 22 FP additions, 12 FP multiplications,
+ * (or, 16 additions, 6 multiplications, 6 fused multiply/add),
+ * 13 stack variables, 0 constants, and 16 memory accesses
+ */
+#include "hf.h"
+
+static void hf_4(R *cr, R *ci, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     {
+	  INT m;
+	  for (m = mb, W = W + ((mb - 1) * 6); m < me; m = m + 1, cr = cr + ms, ci = ci - ms, W = W + 6, MAKE_VOLATILE_STRIDE(8, rs)) {
+	       E T1, Tp, T6, To, Tc, Tk, Th, Tl;
+	       T1 = cr[0];
+	       Tp = ci[0];
+	       {
+		    E T3, T5, T2, T4;
+		    T3 = cr[WS(rs, 2)];
+		    T5 = ci[WS(rs, 2)];
+		    T2 = W[2];
+		    T4 = W[3];
+		    T6 = FMA(T2, T3, T4 * T5);
+		    To = FNMS(T4, T3, T2 * T5);
+	       }
+	       {
+		    E T9, Tb, T8, Ta;
+		    T9 = cr[WS(rs, 1)];
+		    Tb = ci[WS(rs, 1)];
+		    T8 = W[0];
+		    Ta = W[1];
+		    Tc = FMA(T8, T9, Ta * Tb);
+		    Tk = FNMS(Ta, T9, T8 * Tb);
+	       }
+	       {
+		    E Te, Tg, Td, Tf;
+		    Te = cr[WS(rs, 3)];
+		    Tg = ci[WS(rs, 3)];
+		    Td = W[4];
+		    Tf = W[5];
+		    Th = FMA(Td, Te, Tf * Tg);
+		    Tl = FNMS(Tf, Te, Td * Tg);
+	       }
+	       {
+		    E T7, Ti, Tj, Tm;
+		    T7 = T1 + T6;
+		    Ti = Tc + Th;
+		    ci[WS(rs, 1)] = T7 - Ti;
+		    cr[0] = T7 + Ti;
+		    Tj = T1 - T6;
+		    Tm = Tk - Tl;
+		    ci[0] = Tj - Tm;
+		    cr[WS(rs, 1)] = Tj + Tm;
+	       }
+	       {
+		    E Tn, Tq, Tr, Ts;
+		    Tn = Tk + Tl;
+		    Tq = To + Tp;
+		    cr[WS(rs, 2)] = Tn - Tq;
+		    ci[WS(rs, 3)] = Tn + Tq;
+		    Tr = Th - Tc;
+		    Ts = Tp - To;
+		    cr[WS(rs, 3)] = Tr - Ts;
+		    ci[WS(rs, 2)] = Tr + Ts;
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_FULL, 1, 4},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2hc_desc desc = { 4, "hf_4", twinstr, &GENUS, {16, 6, 6, 0} };
+
+void X(codelet_hf_4) (planner *p) {
+     X(khc2hc_register) (p, hf_4, &desc);
+}
+#endif				/* HAVE_FMA */