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wrap define of ABS in ifndef in std.h

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Felix Ruess
2012-04-11 14:09:57 +02:00
parent 5d9c9a18a3
commit e7e51166f5
1 changed files with 2 additions and 0 deletions
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sw/include/std.h
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@@ -86,7 +86,9 @@ typedef uint8_t unit_t;
#define Min(x,y) (x < y ? x : y)
#define Max(x,y) (x > y ? x : y)
#ifndef ABS
#define ABS(val) ((val) < 0 ? -(val) : (val))
#endif
#define Bound(_x, _min, _max) { if (_x > _max) _x = _max; else if (_x < _min) _x = _min; }
#define BoundAbs(_x, _max) Bound(_x, -(_max), (_max))