diff src/fftw-3.3.3/rdft/scalar/r2cb/hc2cb2_4.c @ 10:37bf6b4a2645

Add FFTW3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.3/rdft/scalar/r2cb/hc2cb2_4.c	Wed Mar 20 15:35:50 2013 +0000
@@ -0,0 +1,200 @@
+/*
+ * 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 07:41:57 EST 2012 */
+
+#include "codelet-rdft.h"
+
+#ifdef HAVE_FMA
+
+/* Generated by: ../../../genfft/gen_hc2c.native -fma -reorder-insns -schedule-for-pipeline -compact -variables 4 -pipeline-latency 4 -sign 1 -twiddle-log3 -precompute-twiddles -n 4 -dif -name hc2cb2_4 -include hc2cb.h */
+
+/*
+ * This function contains 24 FP additions, 16 FP multiplications,
+ * (or, 16 additions, 8 multiplications, 8 fused multiply/add),
+ * 30 stack variables, 0 constants, and 16 memory accesses
+ */
+#include "hc2cb.h"
+
+static void hc2cb2_4(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     {
+	  INT m;
+	  for (m = mb, W = W + ((mb - 1) * 4); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 4, MAKE_VOLATILE_STRIDE(16, rs)) {
+	       E Tg, Tc, Te, To, Tn;
+	       {
+		    E T7, Tb, T8, Ta;
+		    T7 = W[0];
+		    Tb = W[3];
+		    T8 = W[2];
+		    Ta = W[1];
+		    {
+			 E Tu, Tj, T3, Tm, Tx, Tr, T6, Tt;
+			 {
+			      E T4, Tp, Tq, T5;
+			      {
+				   E T1, T2, Tk, Tl;
+				   {
+					E Th, Tf, T9, Ti;
+					Th = Ip[0];
+					Tf = T7 * Tb;
+					T9 = T7 * T8;
+					Ti = Im[WS(rs, 1)];
+					T1 = Rp[0];
+					Tg = FNMS(Ta, T8, Tf);
+					Tc = FMA(Ta, Tb, T9);
+					Tu = Th + Ti;
+					Tj = Th - Ti;
+					T2 = Rm[WS(rs, 1)];
+				   }
+				   Tk = Ip[WS(rs, 1)];
+				   Tl = Im[0];
+				   T4 = Rp[WS(rs, 1)];
+				   T3 = T1 + T2;
+				   Tp = T1 - T2;
+				   Tm = Tk - Tl;
+				   Tq = Tk + Tl;
+				   T5 = Rm[0];
+			      }
+			      Tx = Tp + Tq;
+			      Tr = Tp - Tq;
+			      T6 = T4 + T5;
+			      Tt = T4 - T5;
+			 }
+			 {
+			      E Tz, Tv, Td, Ts, Tw, TA, Ty;
+			      Rm[0] = Tj + Tm;
+			      Ts = T7 * Tr;
+			      Tz = Tu - Tt;
+			      Tv = Tt + Tu;
+			      Rp[0] = T3 + T6;
+			      Td = T3 - T6;
+			      Ip[0] = FNMS(Ta, Tv, Ts);
+			      Tw = T7 * Tv;
+			      TA = T8 * Tz;
+			      Ty = T8 * Tx;
+			      Te = Tc * Td;
+			      Im[0] = FMA(Ta, Tr, Tw);
+			      Im[WS(rs, 1)] = FMA(Tb, Tx, TA);
+			      Ip[WS(rs, 1)] = FNMS(Tb, Tz, Ty);
+			      To = Tg * Td;
+			      Tn = Tj - Tm;
+			 }
+		    }
+	       }
+	       Rm[WS(rs, 1)] = FMA(Tc, Tn, To);
+	       Rp[WS(rs, 1)] = FNMS(Tg, Tn, Te);
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_CEXP, 1, 1},
+     {TW_CEXP, 1, 3},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2c_desc desc = { 4, "hc2cb2_4", twinstr, &GENUS, {16, 8, 8, 0} };
+
+void X(codelet_hc2cb2_4) (planner *p) {
+     X(khc2c_register) (p, hc2cb2_4, &desc, HC2C_VIA_RDFT);
+}
+#else				/* HAVE_FMA */
+
+/* Generated by: ../../../genfft/gen_hc2c.native -compact -variables 4 -pipeline-latency 4 -sign 1 -twiddle-log3 -precompute-twiddles -n 4 -dif -name hc2cb2_4 -include hc2cb.h */
+
+/*
+ * This function contains 24 FP additions, 16 FP multiplications,
+ * (or, 16 additions, 8 multiplications, 8 fused multiply/add),
+ * 21 stack variables, 0 constants, and 16 memory accesses
+ */
+#include "hc2cb.h"
+
+static void hc2cb2_4(R *Rp, R *Ip, R *Rm, R *Im, const R *W, stride rs, INT mb, INT me, INT ms)
+{
+     {
+	  INT m;
+	  for (m = mb, W = W + ((mb - 1) * 4); m < me; m = m + 1, Rp = Rp + ms, Ip = Ip + ms, Rm = Rm - ms, Im = Im - ms, W = W + 4, MAKE_VOLATILE_STRIDE(16, rs)) {
+	       E T7, T9, T8, Ta, Tb, Td;
+	       T7 = W[0];
+	       T9 = W[1];
+	       T8 = W[2];
+	       Ta = W[3];
+	       Tb = FMA(T7, T8, T9 * Ta);
+	       Td = FNMS(T9, T8, T7 * Ta);
+	       {
+		    E T3, Tl, Tg, Tp, T6, To, Tj, Tm, Tc, Tk;
+		    {
+			 E T1, T2, Te, Tf;
+			 T1 = Rp[0];
+			 T2 = Rm[WS(rs, 1)];
+			 T3 = T1 + T2;
+			 Tl = T1 - T2;
+			 Te = Ip[0];
+			 Tf = Im[WS(rs, 1)];
+			 Tg = Te - Tf;
+			 Tp = Te + Tf;
+		    }
+		    {
+			 E T4, T5, Th, Ti;
+			 T4 = Rp[WS(rs, 1)];
+			 T5 = Rm[0];
+			 T6 = T4 + T5;
+			 To = T4 - T5;
+			 Th = Ip[WS(rs, 1)];
+			 Ti = Im[0];
+			 Tj = Th - Ti;
+			 Tm = Th + Ti;
+		    }
+		    Rp[0] = T3 + T6;
+		    Rm[0] = Tg + Tj;
+		    Tc = T3 - T6;
+		    Tk = Tg - Tj;
+		    Rp[WS(rs, 1)] = FNMS(Td, Tk, Tb * Tc);
+		    Rm[WS(rs, 1)] = FMA(Td, Tc, Tb * Tk);
+		    {
+			 E Tn, Tq, Tr, Ts;
+			 Tn = Tl - Tm;
+			 Tq = To + Tp;
+			 Ip[0] = FNMS(T9, Tq, T7 * Tn);
+			 Im[0] = FMA(T7, Tq, T9 * Tn);
+			 Tr = Tl + Tm;
+			 Ts = Tp - To;
+			 Ip[WS(rs, 1)] = FNMS(Ta, Ts, T8 * Tr);
+			 Im[WS(rs, 1)] = FMA(T8, Ts, Ta * Tr);
+		    }
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_CEXP, 1, 1},
+     {TW_CEXP, 1, 3},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2c_desc desc = { 4, "hc2cb2_4", twinstr, &GENUS, {16, 8, 8, 0} };
+
+void X(codelet_hc2cb2_4) (planner *p) {
+     X(khc2c_register) (p, hc2cb2_4, &desc, HC2C_VIA_RDFT);
+}
+#endif				/* HAVE_FMA */