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authorscuri <scuri>2008-10-17 06:10:15 +0000
committerscuri <scuri>2008-10-17 06:10:15 +0000
commit5a422aba704c375a307a902bafe658342e209906 (patch)
tree5005011e086bb863d8fb587ad3319bbec59b2447 /src/fftw3/dft/codelets/standard/t1_3.c
First commit - moving from LuaForge to SourceForge
Diffstat (limited to 'src/fftw3/dft/codelets/standard/t1_3.c')
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diff --git a/src/fftw3/dft/codelets/standard/t1_3.c b/src/fftw3/dft/codelets/standard/t1_3.c
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+/*
+ * Copyright (c) 2003 Matteo Frigo
+ * Copyright (c) 2003 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/* This file was automatically generated --- DO NOT EDIT */
+/* Generated on Sat Jul 5 21:29:51 EDT 2003 */
+
+#include "codelet-dft.h"
+
+/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_twiddle -compact -variables 4 -n 3 -name t1_3 -include t.h */
+
+/*
+ * This function contains 16 FP additions, 12 FP multiplications,
+ * (or, 10 additions, 6 multiplications, 6 fused multiply/add),
+ * 15 stack variables, and 12 memory accesses
+ */
+/*
+ * Generator Id's :
+ * $Id: t1_3.c,v 1.1 2008/10/17 06:11:09 scuri Exp $
+ * $Id: t1_3.c,v 1.1 2008/10/17 06:11:09 scuri Exp $
+ * $Id: t1_3.c,v 1.1 2008/10/17 06:11:09 scuri Exp $
+ */
+
+#include "t.h"
+
+static const R *t1_3(R *ri, R *ii, const R *W, stride ios, int m, int dist)
+{
+ DK(KP866025403, +0.866025403784438646763723170752936183471402627);
+ DK(KP500000000, +0.500000000000000000000000000000000000000000000);
+ int i;
+ for (i = m; i > 0; i = i - 1, ri = ri + dist, ii = ii + dist, W = W + 4) {
+ E T1, Ti, T6, Te, Tb, Tf, Tc, Th;
+ T1 = ri[0];
+ Ti = ii[0];
+ {
+ E T3, T5, T2, T4;
+ T3 = ri[WS(ios, 1)];
+ T5 = ii[WS(ios, 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(ios, 2)];
+ Ta = ii[WS(ios, 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(ios, 2)] = Td - Tg;
+ ri[WS(ios, 1)] = Td + Tg;
+ Tj = KP866025403 * (Tb - T6);
+ Tk = FNMS(KP500000000, Th, Ti);
+ ii[WS(ios, 1)] = Tj + Tk;
+ ii[WS(ios, 2)] = Tk - Tj;
+ }
+ }
+ return W;
+}
+
+static const tw_instr twinstr[] = {
+ {TW_FULL, 0, 3},
+ {TW_NEXT, 1, 0}
+};
+
+static const ct_desc desc = { 3, "t1_3", twinstr, {10, 6, 6, 0}, &GENUS, 0, 0, 0 };
+
+void X(codelet_t1_3) (planner *p) {
+ X(kdft_dit_register) (p, t1_3, &desc);
+}