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diff src/fftw-3.3.3/rdft/scalar/r2cf/hc2cfdft2_4.c @ 95:89f5e221ed7b

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Add FFTW3
author Chris Cannam <cannam@all-day-breakfast.com>
date Wed, 20 Mar 2013 15:35:50 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fftw-3.3.3/rdft/scalar/r2cf/hc2cfdft2_4.c	Wed Mar 20 15:35:50 2013 +0000
@@ -0,0 +1,224 @@
+/*
+ * 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 07:40:50 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 -twiddle-log3 -precompute-twiddles -n 4 -dit -name hc2cfdft2_4 -include hc2cf.h */
+
+/*
+ * This function contains 32 FP additions, 24 FP multiplications,
+ * (or, 24 additions, 16 multiplications, 8 fused multiply/add),
+ * 33 stack variables, 1 constants, and 16 memory accesses
+ */
+#include "hc2cf.h"
+
+static void hc2cfdft2_4(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) * 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 T1, T5, T2, T4;
+	       T1 = W[0];
+	       T5 = W[3];
+	       T2 = W[2];
+	       T4 = W[1];
+	       {
+		    E Tc, T6, Tp, Tj, Tw, Tt, T9, TE, To, TC, Ta, Tr, Tf, Tl, Tm;
+		    {
+			 E Th, Tb, T3, Ti;
+			 Th = Ip[0];
+			 Tb = T1 * T5;
+			 T3 = T1 * T2;
+			 Ti = Im[0];
+			 Tl = Rm[0];
+			 Tc = FNMS(T4, T2, Tb);
+			 T6 = FMA(T4, T5, T3);
+			 Tp = Th + Ti;
+			 Tj = Th - Ti;
+			 Tm = Rp[0];
+		    }
+		    {
+			 E T7, T8, Td, Tn, Te;
+			 T7 = Ip[WS(rs, 1)];
+			 T8 = Im[WS(rs, 1)];
+			 Td = Rp[WS(rs, 1)];
+			 Tw = Tm + Tl;
+			 Tn = Tl - Tm;
+			 Tt = T7 + T8;
+			 T9 = T7 - T8;
+			 Te = Rm[WS(rs, 1)];
+			 TE = T4 * Tn;
+			 To = T1 * Tn;
+			 TC = T2 * Tt;
+			 Ta = T6 * T9;
+			 Tr = Td - Te;
+			 Tf = Td + Te;
+		    }
+		    {
+			 E Tq, Tk, TB, Ty, Tu, TI, TG, TF;
+			 Tq = FNMS(T4, Tp, To);
+			 TF = FMA(T1, Tp, TE);
+			 {
+			      E Tg, Tx, TD, Ts;
+			      Tg = FNMS(Tc, Tf, Ta);
+			      Tx = T6 * Tf;
+			      TD = FNMS(T5, Tr, TC);
+			      Ts = T2 * Tr;
+			      Tk = Tg + Tj;
+			      TB = Tj - Tg;
+			      Ty = FMA(Tc, T9, Tx);
+			      Tu = FMA(T5, Tt, Ts);
+			      TI = TD + TF;
+			      TG = TD - TF;
+			 }
+			 {
+			      E Tz, TH, Tv, TA;
+			      Tz = Tw - Ty;
+			      TH = Tw + Ty;
+			      Tv = Tq - Tu;
+			      TA = Tu + Tq;
+			      Rp[0] = KP500000000 * (TH + TI);
+			      Rm[WS(rs, 1)] = KP500000000 * (TH - TI);
+			      Rm[0] = KP500000000 * (Tz - TA);
+			      Im[WS(rs, 1)] = KP500000000 * (Tv - Tk);
+			      Ip[0] = KP500000000 * (Tk + Tv);
+			      Im[0] = KP500000000 * (TG - TB);
+			      Rp[WS(rs, 1)] = KP500000000 * (Tz + TA);
+			      Ip[WS(rs, 1)] = KP500000000 * (TB + TG);
+			 }
+		    }
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_CEXP, 1, 1},
+     {TW_CEXP, 1, 3},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2c_desc desc = { 4, "hc2cfdft2_4", twinstr, &GENUS, {24, 16, 8, 0} };
+
+void X(codelet_hc2cfdft2_4) (planner *p) {
+     X(khc2c_register) (p, hc2cfdft2_4, &desc, HC2C_VIA_DFT);
+}
+#else				/* HAVE_FMA */
+
+/* Generated by: ../../../genfft/gen_hc2cdft.native -compact -variables 4 -pipeline-latency 4 -twiddle-log3 -precompute-twiddles -n 4 -dit -name hc2cfdft2_4 -include hc2cf.h */
+
+/*
+ * This function contains 32 FP additions, 24 FP multiplications,
+ * (or, 24 additions, 16 multiplications, 8 fused multiply/add),
+ * 24 stack variables, 1 constants, and 16 memory accesses
+ */
+#include "hc2cf.h"
+
+static void hc2cfdft2_4(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) * 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 T1, T3, T2, T4, T5, T9;
+	       T1 = W[0];
+	       T3 = W[1];
+	       T2 = W[2];
+	       T4 = W[3];
+	       T5 = FMA(T1, T2, T3 * T4);
+	       T9 = FNMS(T3, T2, T1 * T4);
+	       {
+		    E Tg, Tr, Tm, Tx, Td, Tw, Tp, Ts;
+		    {
+			 E Te, Tf, Tl, Ti, Tj, Tk;
+			 Te = Ip[0];
+			 Tf = Im[0];
+			 Tl = Te + Tf;
+			 Ti = Rm[0];
+			 Tj = Rp[0];
+			 Tk = Ti - Tj;
+			 Tg = Te - Tf;
+			 Tr = Tj + Ti;
+			 Tm = FNMS(T3, Tl, T1 * Tk);
+			 Tx = FMA(T3, Tk, T1 * Tl);
+		    }
+		    {
+			 E T8, To, Tc, Tn;
+			 {
+			      E T6, T7, Ta, Tb;
+			      T6 = Ip[WS(rs, 1)];
+			      T7 = Im[WS(rs, 1)];
+			      T8 = T6 - T7;
+			      To = T6 + T7;
+			      Ta = Rp[WS(rs, 1)];
+			      Tb = Rm[WS(rs, 1)];
+			      Tc = Ta + Tb;
+			      Tn = Ta - Tb;
+			 }
+			 Td = FNMS(T9, Tc, T5 * T8);
+			 Tw = FNMS(T4, Tn, T2 * To);
+			 Tp = FMA(T2, Tn, T4 * To);
+			 Ts = FMA(T5, Tc, T9 * T8);
+		    }
+		    {
+			 E Th, Tq, Tz, TA;
+			 Th = Td + Tg;
+			 Tq = Tm - Tp;
+			 Ip[0] = KP500000000 * (Th + Tq);
+			 Im[WS(rs, 1)] = KP500000000 * (Tq - Th);
+			 Tz = Tr + Ts;
+			 TA = Tw + Tx;
+			 Rm[WS(rs, 1)] = KP500000000 * (Tz - TA);
+			 Rp[0] = KP500000000 * (Tz + TA);
+		    }
+		    {
+			 E Tt, Tu, Tv, Ty;
+			 Tt = Tr - Ts;
+			 Tu = Tp + Tm;
+			 Rm[0] = KP500000000 * (Tt - Tu);
+			 Rp[WS(rs, 1)] = KP500000000 * (Tt + Tu);
+			 Tv = Tg - Td;
+			 Ty = Tw - Tx;
+			 Ip[WS(rs, 1)] = KP500000000 * (Tv + Ty);
+			 Im[0] = KP500000000 * (Ty - Tv);
+		    }
+	       }
+	  }
+     }
+}
+
+static const tw_instr twinstr[] = {
+     {TW_CEXP, 1, 1},
+     {TW_CEXP, 1, 3},
+     {TW_NEXT, 1, 0}
+};
+
+static const hc2c_desc desc = { 4, "hc2cfdft2_4", twinstr, &GENUS, {24, 16, 8, 0} };
+
+void X(codelet_hc2cfdft2_4) (planner *p) {
+     X(khc2c_register) (p, hc2cfdft2_4, &desc, HC2C_VIA_DFT);
+}
+#endif				/* HAVE_FMA */