1 #ifndef GD_INTERN_H 2 #define GD_INTERN_H 3 #ifndef MIN 4 #define MIN(a,b) ((a)<(b)?(a):(b)) 5 #endif 6 #define MIN3(a,b,c) ((a)<(b)?(MIN(a,c)):(MIN(b,c))) 7 #ifndef MAX 8 #define MAX(a,b) ((a)<(b)?(b):(a)) 9 #endif 10 #define MAX3(a,b,c) ((a)<(b)?(MAX(b,c)):(MAX(a,c))) 11 #define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x))) 12 13 #endif 14 15
