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/*
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* LIBOIL - Library of Optimized Inner Loops
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* Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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//Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <liboilfunction.h>
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#include "liboil/simdpack/simdpack.h"
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#include <math.h>
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/**
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* oil_diffsquaresum_f32:
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* @d_1:
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* @src1:
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* @sstr1:
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* @src2:
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* @sstr2:
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* @n:
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*
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* Calculates the sum of squared differences between @src1 and @src2
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* and places the result in @d_1.
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*/
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OIL_DEFINE_CLASS (diffsquaresum_f32,
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"float *d_1, float *src1, int sstr1, float *src2, int sstr2, int n");
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static void
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diffsquaresum_f32_ref(float *dest, float *src1, int sstr1, float *src2,
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int sstr2, int n)
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{
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double sum = 0;
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double errsum = 0;
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double tmp;
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double x;
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int i;
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for(i=0;i<n;i++){
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x = OIL_GET(src1, i*sstr1, float) -
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OIL_GET(src2, i*sstr2, float);
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x = x*x;
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tmp = sum;
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sum += x;
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errsum += (tmp - sum) + x;
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}
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*dest = sum + errsum;
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}
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OIL_DEFINE_IMPL_REF (diffsquaresum_f32_ref, diffsquaresum_f32);
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#ifdef __SYMBIAN32__
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OilFunctionClass* __oil_function_class_diffsquaresum_f32() {
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return &_oil_function_class_diffsquaresum_f32;
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}
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#endif
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#ifdef __SYMBIAN32__
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OilFunctionImpl* __oil_function_impl_diffsquaresum_f32_ref() {
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return &_oil_function_impl_diffsquaresum_f32_ref;
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}
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#endif
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#ifdef __SYMBIAN32__
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EXPORT_C void** _oil_function_class_ptr_diffsquaresum_f32 () {
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oil_function_class_ptr_diffsquaresum_f32 = __oil_function_class_diffsquaresum_f32();
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return &oil_function_class_ptr_diffsquaresum_f32->func;
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}
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#endif
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