/*
* 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 <liboilfunction.h>
#include "liboil/simdpack/simdpack.h"
#include <math.h>
/**
* oil_diffsquaresum_f32:
* @d_1:
* @src1:
* @sstr1:
* @src2:
* @sstr2:
* @n:
*
* Calculates the sum of squared differences between @src1 and @src2
* and places the result in @d_1.
*/
OIL_DEFINE_CLASS (diffsquaresum_f32,
"float *d_1, float *src1, int sstr1, float *src2, int sstr2, int n");
static void
diffsquaresum_f32_ref(float *dest, float *src1, int sstr1, float *src2,
int sstr2, int n)
{
double sum = 0;
double errsum = 0;
double tmp;
double x;
int i;
for(i=0;i<n;i++){
x = OIL_GET(src1, i*sstr1, float) -
OIL_GET(src2, i*sstr2, float);
x = x*x;
tmp = sum;
sum += x;
errsum += (tmp - sum) + x;
}
*dest = sum + errsum;
}
OIL_DEFINE_IMPL_REF (diffsquaresum_f32_ref, diffsquaresum_f32);
#ifdef __SYMBIAN32__
OilFunctionClass* __oil_function_class_diffsquaresum_f32() {
return &_oil_function_class_diffsquaresum_f32;
}
#endif
#ifdef __SYMBIAN32__
OilFunctionImpl* __oil_function_impl_diffsquaresum_f32_ref() {
return &_oil_function_impl_diffsquaresum_f32_ref;
}
#endif
#ifdef __SYMBIAN32__
EXPORT_C void** _oil_function_class_ptr_diffsquaresum_f32 () {
oil_function_class_ptr_diffsquaresum_f32 = __oil_function_class_diffsquaresum_f32();
return &oil_function_class_ptr_diffsquaresum_f32->func;
}
#endif