#ifndef GD_INTERN_H #define GD_INTERN_H #ifndef MIN #define MIN(a,b) ((a)<(b)?(a):(b)) #endif #define MIN3(a,b,c) ((a)<(b)?(MIN(a,c)):(MIN(b,c))) #ifndef MAX #define MAX(a,b) ((a)<(b)?(b):(a)) #endif #define MAX3(a,b,c) ((a)<(b)?(MAX(b,c)):(MAX(a,c))) #define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x))) #endif