Reapply fix for EXPORT_C problem in backend.dll, which got lost in the merge - bug 2971
/*
* 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