/*

  * 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"

 #define ABS(x) ((x)>0 ? (x) : -(x))

 static void

 abs_u16_s16_unroll2 (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

 {

   while (n & 1) {

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     n--;

   }

   while (n > 0) {

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     n -= 2;

   }

 }

 OIL_DEFINE_IMPL (abs_u16_s16_unroll2, abs_u16_s16);

 static void

 abs_u16_s16_unroll4 (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

 {

   while (n & 3) {

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     n--;

   }

   while (n > 0) {

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     *dest = ABS (*src);

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

     n -= 4;

   }

 }

 OIL_DEFINE_IMPL (abs_u16_s16_unroll4, abs_u16_s16);

 static void

 abs_u16_s16_fast (uint16_t * dest, int dstr, int16_t * src, int sstr, int n)

 {

   int i;

   int16_t x, y;

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

     x = *src;

     y = ((x >> 15) & x);

     *dest = x - y - y;

     OIL_INCREMENT (dest, dstr);

     OIL_INCREMENT (src, sstr);

   }

 }

 OIL_DEFINE_IMPL (abs_u16_s16_fast, abs_u16_s16);

 /* Similar algorithm as clipping, but for absolute value.  Note the stunt

  * pulled to get around 2*y rolling over.  */

 static void

 abs_u32_s32_fast (uint32_t * dest, int dstr, int32_t * src, int sstr, int n)

 {

   int i;

   int32_t x, y;

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

     x = OIL_GET(src, i * sstr, int32_t);

     y = ((x >> 31) & x);

     OIL_GET(dest, i * dstr, uint32_t) = x - y - y;

   }

 }

 OIL_DEFINE_IMPL (abs_u32_s32_fast, abs_u32_s32);

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_abs_u16_s16_unroll2() {

 		return &_oil_function_impl_abs_u16_s16_unroll2;

 }

 #endif

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_abs_u16_s16_unroll4() {

 		return &_oil_function_impl_abs_u16_s16_unroll4;

 }

 #endif

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_abs_u16_s16_fast() {

 		return &_oil_function_impl_abs_u16_s16_fast;

 }

 #endif

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_abs_u32_s32_fast() {

 		return &_oil_function_impl_abs_u32_s32_fast;

 }

 #endif