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macro do {} while(0) safety

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Sergei Golubchik 2013-04-07 15:20:58 +02:00
parent bbbd7cedf5
commit 0614af18a6
1 changed files with 1 additions and 1 deletions
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include/my_global.h
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@ -476,7 +476,7 @@ typedef unsigned int uint;
typedef unsigned short ushort;
#endif
#define swap_variables(t, a, b) { t dummy; dummy= a; a= b; b= dummy; }
#define swap_variables(t, a, b) do { t dummy; dummy= a; a= b; b= dummy; } while(0)
#define test(a) ((a) ? 1 : 0)
#define set_if_bigger(a,b) do { if ((a) < (b)) (a)=(b); } while(0)
#define set_if_smaller(a,b) do { if ((a) > (b)) (a)=(b); } while(0)