/*
* 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