/*

 * 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>

/**

 * oil_squaresum_f64:

 * @d:

 * @s:

 * @n:

 *

 * Sums the square of each element in @s and places the result in

 * @dest.

 */

OIL_DEFINE_CLASS (squaresum_f64, "double *d, double *s, int n");

static void

squaresum_f64_ref(double *dest, double *src, int n)

{

	double sum2 = 0;

	double errsum = 0;

	double tmp;

	double x;

	int i;

	for(i=0;i<n;i++){

		tmp = sum2;

		x = src[i]*src[i];

		sum2 += x;

		errsum += (tmp - sum2) + x;

	}

	*dest = sum2 + errsum;

}

OIL_DEFINE_IMPL_REF (squaresum_f64_ref, squaresum_f64);

/**

 * oil_squaresum_shifted_s16:

 * @d:

 * @s:

 * @n:

 *

 * Square each element in @s and divide by (1<<15), and sum the

 * results, placing the final result in @d.

 */

OIL_DEFINE_CLASS (squaresum_shifted_s16, "uint32_t *d, int16_t *s, int n");

static void

squaresum_shifted_s16_ref(uint32_t *dest, int16_t *src, int n)

{

	uint32_t sum2 = 0;

        uint32_t x;

	int i;

	for(i=0;i<n;i++){

		x = (src[i]*src[i] + (1<<14)) >> 15;

		sum2 += x;

	}

	*dest = sum2;

}

OIL_DEFINE_IMPL_REF (squaresum_shifted_s16_ref, squaresum_shifted_s16);

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_squaresum_f64() {

		return &_oil_function_class_squaresum_f64;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionClass* __oil_function_class_squaresum_shifted_s16() {

		return &_oil_function_class_squaresum_shifted_s16;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_squaresum_f64_ref() {

		return &_oil_function_impl_squaresum_f64_ref;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_squaresum_shifted_s16_ref() {

		return &_oil_function_impl_squaresum_shifted_s16_ref;

}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_squaresum_f64 ()	{

	oil_function_class_ptr_squaresum_f64 = __oil_function_class_squaresum_f64();

	return &oil_function_class_ptr_squaresum_f64->func;

	}

#endif

#ifdef	__SYMBIAN32__

EXPORT_C void** _oil_function_class_ptr_squaresum_shifted_s16 ()	{

	oil_function_class_ptr_squaresum_shifted_s16 = __oil_function_class_squaresum_shifted_s16();

	return &oil_function_class_ptr_squaresum_shifted_s16->func;

	}

#endif