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Last change
on this file since 5017 was
3860,
checked in by bensch, 20 years ago
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orxonox/trunk: moved likely to compiler.h in defs
also reset all the UNLIKELY_IF functions to how they should look.
the old approach is still valid, but depricated.
@patrick: i hope this is ok for you, for it is LINUX-standard.
and i think windows is also able to handle likely/unlikely because it is a compiler issue not a system issue
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File size:
545 bytes
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| 1 | |
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| 2 | #ifndef _COMPILER_H |
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| 3 | #define _COMPILER_H |
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| 4 | |
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| 5 | /* performance tweaking stuff */ |
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| 6 | #if __GNUC__ == 2 && __GNUC_MINOR__ < 96 |
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| 7 | #define __builtin_expect(x, expected_value) (x) |
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| 8 | #endif |
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| 9 | |
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| 10 | #define likely(x) __builtin_expect((x),1) |
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| 11 | #define unlikely(x) __builtin_expect((x),0) |
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| 12 | |
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| 13 | #ifdef __unix__ |
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| 14 | |
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| 15 | // deprecated // |
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| 16 | #define __LIKELY_IF(condition) if( likely(condition)) |
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| 17 | #define __UNLIKELY_IF(condition) if( unlikely(condition)) |
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| 18 | #else |
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| 19 | #define __LIKELY_IF(condition) if( condition) |
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| 20 | #define __UNLIKELY_IF(condition) if( condition) |
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| 21 | #endif |
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| 22 | |
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| 23 | |
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| 24 | #endif /* _COMPILER_H */ |
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