diff src/fftw-3.3.3/rdft/scalar/r2cf/r2cf_8.c @ 10:37bf6b4a2645

Add FFTW3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.3/rdft/scalar/r2cf/r2cf_8.c	Wed Mar 20 15:35:50 2013 +0000
@@ -0,0 +1,156 @@
+/*
+ * 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 07:39:45 EST 2012 */
+
+#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 8 -name r2cf_8 -include r2cf.h */
+
+/*
+ * This function contains 20 FP additions, 4 FP multiplications,
+ * (or, 16 additions, 0 multiplications, 4 fused multiply/add),
+ * 18 stack variables, 1 constants, and 16 memory accesses
+ */
+#include "r2cf.h"
+
+static void r2cf_8(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
+{
+     DK(KP707106781, +0.707106781186547524400844362104849039284835938);
+     {
+	  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(32, rs), MAKE_VOLATILE_STRIDE(32, csr), MAKE_VOLATILE_STRIDE(32, csi)) {
+	       E T4, T7, T3, Tj, Td, T5, T8, T9;
+	       {
+		    E T1, T2, Tb, Tc;
+		    T1 = R0[0];
+		    T2 = R0[WS(rs, 2)];
+		    Tb = R1[WS(rs, 3)];
+		    Tc = R1[WS(rs, 1)];
+		    T4 = R0[WS(rs, 1)];
+		    T7 = T1 - T2;
+		    T3 = T1 + T2;
+		    Tj = Tb + Tc;
+		    Td = Tb - Tc;
+		    T5 = R0[WS(rs, 3)];
+		    T8 = R1[0];
+		    T9 = R1[WS(rs, 2)];
+	       }
+	       {
+		    E T6, Tf, Ta, Ti;
+		    T6 = T4 + T5;
+		    Tf = T4 - T5;
+		    Ta = T8 - T9;
+		    Ti = T8 + T9;
+		    {
+			 E Th, Tk, Te, Tg;
+			 Th = T3 + T6;
+			 Cr[WS(csr, 2)] = T3 - T6;
+			 Tk = Ti + Tj;
+			 Ci[WS(csi, 2)] = Tj - Ti;
+			 Te = Ta + Td;
+			 Tg = Td - Ta;
+			 Cr[0] = Th + Tk;
+			 Cr[WS(csr, 4)] = Th - Tk;
+			 Ci[WS(csi, 3)] = FMA(KP707106781, Tg, Tf);
+			 Ci[WS(csi, 1)] = FMS(KP707106781, Tg, Tf);
+			 Cr[WS(csr, 1)] = FMA(KP707106781, Te, T7);
+			 Cr[WS(csr, 3)] = FNMS(KP707106781, Te, T7);
+		    }
+	       }
+	  }
+     }
+}
+
+static const kr2c_desc desc = { 8, "r2cf_8", {16, 0, 4, 0}, &GENUS };
+
+void X(codelet_r2cf_8) (planner *p) {
+     X(kr2c_register) (p, r2cf_8, &desc);
+}
+
+#else				/* HAVE_FMA */
+
+/* Generated by: ../../../genfft/gen_r2cf.native -compact -variables 4 -pipeline-latency 4 -n 8 -name r2cf_8 -include r2cf.h */
+
+/*
+ * This function contains 20 FP additions, 2 FP multiplications,
+ * (or, 20 additions, 2 multiplications, 0 fused multiply/add),
+ * 14 stack variables, 1 constants, and 16 memory accesses
+ */
+#include "r2cf.h"
+
+static void r2cf_8(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
+{
+     DK(KP707106781, +0.707106781186547524400844362104849039284835938);
+     {
+	  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(32, rs), MAKE_VOLATILE_STRIDE(32, csr), MAKE_VOLATILE_STRIDE(32, csi)) {
+	       E T3, T7, Td, Tj, T6, Tg, Ta, Ti;
+	       {
+		    E T1, T2, Tb, Tc;
+		    T1 = R0[0];
+		    T2 = R0[WS(rs, 2)];
+		    T3 = T1 + T2;
+		    T7 = T1 - T2;
+		    Tb = R1[WS(rs, 3)];
+		    Tc = R1[WS(rs, 1)];
+		    Td = Tb - Tc;
+		    Tj = Tb + Tc;
+	       }
+	       {
+		    E T4, T5, T8, T9;
+		    T4 = R0[WS(rs, 1)];
+		    T5 = R0[WS(rs, 3)];
+		    T6 = T4 + T5;
+		    Tg = T4 - T5;
+		    T8 = R1[0];
+		    T9 = R1[WS(rs, 2)];
+		    Ta = T8 - T9;
+		    Ti = T8 + T9;
+	       }
+	       Cr[WS(csr, 2)] = T3 - T6;
+	       Ci[WS(csi, 2)] = Tj - Ti;
+	       {
+		    E Te, Tf, Th, Tk;
+		    Te = KP707106781 * (Ta + Td);
+		    Cr[WS(csr, 3)] = T7 - Te;
+		    Cr[WS(csr, 1)] = T7 + Te;
+		    Tf = KP707106781 * (Td - Ta);
+		    Ci[WS(csi, 1)] = Tf - Tg;
+		    Ci[WS(csi, 3)] = Tg + Tf;
+		    Th = T3 + T6;
+		    Tk = Ti + Tj;
+		    Cr[WS(csr, 4)] = Th - Tk;
+		    Cr[0] = Th + Tk;
+	       }
+	  }
+     }
+}
+
+static const kr2c_desc desc = { 8, "r2cf_8", {20, 2, 0, 0}, &GENUS };
+
+void X(codelet_r2cf_8) (planner *p) {
+     X(kr2c_register) (p, r2cf_8, &desc);
+}
+
+#endif				/* HAVE_FMA */