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https://github.com/dborth/snes9xgx.git
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53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#ifndef _SAR_H_
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#define _SAR_H_
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#ifdef RIGHTSHIFT_IS_SAR
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#define SAR(b, n) ((b) >> (n))
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#else
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static inline int8 SAR (const int8 b, const int n)
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{
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#ifndef RIGHTSHIFT_int8_IS_SAR
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if (b < 0)
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return ((b >> n) | (-1 << (8 - n)));
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#endif
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return (b >> n);
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}
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static inline int16 SAR (const int16 b, const int n)
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{
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#ifndef RIGHTSHIFT_int16_IS_SAR
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if (b < 0)
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return ((b >> n) | (-1 << (16 - n)));
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#endif
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return (b >> n);
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}
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static inline int32 SAR (const int32 b, const int n)
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{
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#ifndef RIGHTSHIFT_int32_IS_SAR
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if (b < 0)
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return ((b >> n) | (-1 << (32 - n)));
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#endif
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return (b >> n);
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}
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static inline int64 SAR (const int64 b, const int n)
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{
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#ifndef RIGHTSHIFT_int64_IS_SAR
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if (b < 0)
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return ((b >> n) | (-1 << (64 - n)));
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#endif
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return (b >> n);
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}
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#endif
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#endif
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