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Add td_min(), td_max() functions

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This commit is contained in:
Christophe Grenier 2008-04-11 11:29:23 +02:00
parent 12da0317f4
commit d4691ada06
1 changed files with 16 additions and 0 deletions
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16
src/common.h
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@ -417,5 +417,21 @@ int strncasecmp(const char * s1, const char * s2, size_t len);
#endif #endif
void create_dir(const char *dir_name, const unsigned int is_dir_name); void create_dir(const char *dir_name, const unsigned int is_dir_name);
unsigned int filename_convert(char *dst, const char*src, const unsigned int n); unsigned int filename_convert(char *dst, const char*src, const unsigned int n);
/*
* td_min()/td_max() macros that also do
* strict type-checking.. See the
* "unnecessary" pointer comparison.
* Comes from Linux kernel
*/
#define td_min(x,y) ({ \
typeof(x) _x = (x); \
typeof(y) _y = (y); \
(void) (&_x == &_y); \
_x < _y ? _x : _y; })
#define td_max(x,y) ({ \
typeof(x) _x = (x); \
typeof(y) _y = (y); \
(void) (&_x == &_y); \
_x > _y ? _x : _y; })
#endif #endif