/*

  * 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