/*

 * 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>

static void multsum_f32_unroll2 (float *dest, float *src1, int sstr1,

    float *src2, int sstr2, int n)

{

  int i;

  double sum1 = 0;

  double sum2 = 0;

  for(i=0;i<n-1;i+=2){

    sum1 += OIL_GET(src1,0, float) * OIL_GET(src2,0, float);

    sum2 += OIL_GET(src1,sstr1, float) * OIL_GET(src2,sstr2, float);

    OIL_INCREMENT (src1, sstr1*2);

    OIL_INCREMENT (src2, sstr2*2);

  }

  if (i<n) {

    sum1 += OIL_GET(src1,0, float) * OIL_GET(src2,0, float);

  }

  *dest = sum1 + sum2;

}

OIL_DEFINE_IMPL (multsum_f32_unroll2, multsum_f32);

static void multsum_f64_unroll8 (double *dest, double *src1, int sstr1,

    double *src2, int sstr2, int n)

{

  int i = 0;

  double sum = 0;

  while(i<n-7) {

    sum += (OIL_GET(src1,0, double) * OIL_GET(src2,0, double)) +

           (OIL_GET(src1,sstr1, double) * OIL_GET(src2,sstr2, double)) +

           (OIL_GET(src1,2*sstr1, double) * OIL_GET(src2,2*sstr2, double)) +

           (OIL_GET(src1,3*sstr1, double) * OIL_GET(src2,3*sstr2, double)) +

           (OIL_GET(src1,4*sstr1, double) * OIL_GET(src2,4*sstr2, double)) +

           (OIL_GET(src1,5*sstr1, double) * OIL_GET(src2,5*sstr2, double)) +

           (OIL_GET(src1,6*sstr1, double) * OIL_GET(src2,6*sstr2, double)) +

           (OIL_GET(src1,7*sstr1, double) * OIL_GET(src2,7*sstr2, double));

    OIL_INCREMENT (src1, sstr1*8);

    OIL_INCREMENT (src2, sstr2*8);

    i+=8;

  }

  while(i<n-3) {

    sum += (OIL_GET(src1,0, double) * OIL_GET(src2,0, double)) +

           (OIL_GET(src1,sstr1, double) * OIL_GET(src2,sstr2, double)) +

           (OIL_GET(src1,2*sstr1, double) * OIL_GET(src2,2*sstr2, double)) +

           (OIL_GET(src1,3*sstr1, double) * OIL_GET(src2,3*sstr2, double));

    OIL_INCREMENT (src1, sstr1*4);

    OIL_INCREMENT (src2, sstr2*4);

    i+=4;

  }

  while(i<n-1) {

    sum += (OIL_GET(src1,0, double) * OIL_GET(src2,0, double)) +

           (OIL_GET(src1,sstr1, double) * OIL_GET(src2,sstr2, double));

    OIL_INCREMENT (src1, sstr1*2);

    OIL_INCREMENT (src2, sstr2*2);

    i+=2;

  }

  if (i<n) {

    sum += OIL_GET(src1,0, double) * OIL_GET(src2,0, double);

  }

  *dest = sum;

}

OIL_DEFINE_IMPL (multsum_f64_unroll8, multsum_f64);

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_multsum_f32_unroll2() {

		return &_oil_function_impl_multsum_f32_unroll2;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_multsum_f64_unroll8() {

		return &_oil_function_impl_multsum_f64_unroll8;

}

#endif