genericopenlibs/liboil/src/simdpack/diffsquaresum_f64.c
changeset 18 47c74d1534e1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/src/simdpack/diffsquaresum_f64.c	Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,177 @@
+/*
+ * LIBOIL - Library of Optimized Inner Loops
+ * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <liboil/liboilfunction.h>
+#include "liboil/simdpack/simdpack.h"
+#include <math.h>
+
+static void
+diffsquaresum_f64_i10_simple(double *dest, double *src1, int sstr1, double *src2,
+    int sstr2, int n)
+{
+	double sum = 0;
+	double x;
+	int i;
+
+	for(i=0;i<n;i++){
+		x = OIL_GET(src1, i*sstr1, double) -
+                  OIL_GET(src2, i*sstr2, double);
+		x = x*x;
+		sum += x;
+	}
+
+	*dest = sum;
+}
+OIL_DEFINE_IMPL (diffsquaresum_f64_i10_simple, diffsquaresum_f64);
+
+static void
+diffsquaresum_f64_i10_fast(double *dest, double *src1, int sstr1, double *src2,
+    int sstr2, int n)
+{
+	double sum0 = 0;
+	double x;
+
+	while(n>0){
+		x = *src1 - *src2;
+		sum0 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		n--;
+	}
+
+	*dest = sum0;
+}
+OIL_DEFINE_IMPL (diffsquaresum_f64_i10_fast, diffsquaresum_f64);
+
+static void
+diffsquaresum_f64_i10_unroll2(double *dest, double *src1, int sstr1, double *src2,
+    int sstr2, int n)
+{
+	double sum0 = 0;
+	double sum1 = 0;
+	double x;
+
+	if(n&1){
+		x = *src1 - *src2;
+		sum0 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		n--;
+	}
+	while(n>0){
+		x = *src1 - *src2;
+		sum0 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		x = *src1 - *src2;
+		sum1 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		n-=2;
+	}
+
+	*dest = sum0 + sum1;
+}
+OIL_DEFINE_IMPL (diffsquaresum_f64_i10_unroll2, diffsquaresum_f64);
+
+static void
+diffsquaresum_f64_i10_unroll4(double *dest, double *src1, int sstr1,
+	double *src2, int sstr2, int n)
+{
+	double sum0 = 0;
+	double sum1 = 0;
+	double sum2 = 0;
+	double sum3 = 0;
+	double x;
+
+	while(n&3){
+		x = *src1 - *src2;
+		sum0 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		n--;
+	}
+	while(n>0){
+		x = *src1 - *src2;
+		sum0 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		x = *src1 - *src2;
+		sum1 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		x = *src1 - *src2;
+		sum2 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		x = *src1 - *src2;
+		sum3 += x * x;
+		OIL_INCREMENT (src1, sstr1);
+		OIL_INCREMENT (src2, sstr2);
+		n-=4;
+	}
+
+	*dest = sum0 + sum1 + sum2 + sum3;
+}
+OIL_DEFINE_IMPL (diffsquaresum_f64_i10_unroll4, diffsquaresum_f64);
+
+
+
+
+#ifdef	__SYMBIAN32__
+ 
+OilFunctionImpl* __oil_function_impl_diffsquaresum_f64_i10_simple() {
+		return &_oil_function_impl_diffsquaresum_f64_i10_simple;
+}
+#endif
+
+#ifdef	__SYMBIAN32__
+ 
+OilFunctionImpl* __oil_function_impl_diffsquaresum_f64_i10_fast() {
+		return &_oil_function_impl_diffsquaresum_f64_i10_fast;
+}
+#endif
+
+#ifdef	__SYMBIAN32__
+ 
+OilFunctionImpl* __oil_function_impl_diffsquaresum_f64_i10_unroll2() {
+		return &_oil_function_impl_diffsquaresum_f64_i10_unroll2;
+}
+#endif
+
+#ifdef	__SYMBIAN32__
+ 
+OilFunctionImpl* __oil_function_impl_diffsquaresum_f64_i10_unroll4() {
+		return &_oil_function_impl_diffsquaresum_f64_i10_unroll4;
+}
+#endif
+