/*

  * 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