mirror of https://github.com/snes9xgit/snes9x.git
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*****************************************************************************\
|
|
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
|
|
This file is licensed under the Snes9x License.
|
|
For further information, consult the LICENSE file in the root directory.
|
|
\*****************************************************************************/
|
|
|
|
#ifndef _SAR_H_
|
|
#define _SAR_H_
|
|
|
|
#ifdef RIGHTSHIFT_IS_SAR
|
|
#define SAR(b, n) ((b) >> (n))
|
|
#else
|
|
|
|
static inline int8 SAR (const int8 b, const int n)
|
|
{
|
|
#ifndef RIGHTSHIFT_int8_IS_SAR
|
|
if (b < 0)
|
|
return ((b >> n) | (-1 << (8 - n)));
|
|
#endif
|
|
return (b >> n);
|
|
}
|
|
|
|
static inline int16 SAR (const int16 b, const int n)
|
|
{
|
|
#ifndef RIGHTSHIFT_int16_IS_SAR
|
|
if (b < 0)
|
|
return ((b >> n) | (-1 << (16 - n)));
|
|
#endif
|
|
return (b >> n);
|
|
}
|
|
|
|
static inline int32 SAR (const int32 b, const int n)
|
|
{
|
|
#ifndef RIGHTSHIFT_int32_IS_SAR
|
|
if (b < 0)
|
|
return ((b >> n) | (-1 << (32 - n)));
|
|
#endif
|
|
return (b >> n);
|
|
}
|
|
|
|
static inline int64 SAR (const int64 b, const int n)
|
|
{
|
|
#ifndef RIGHTSHIFT_int64_IS_SAR
|
|
if (b < 0)
|
|
return ((b >> n) | (-1 << (64 - n)));
|
|
#endif
|
|
return (b >> n);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|