본래 math.h에 있어야 하는데.. MinGW에는 없다. 필요하면 추가한다.
#define MAXSHORT 0x7fff #define MAXINT 0x7fffffff #define MAXLONG 0x7fffffff #define MAXDOUBLE 1.7976931348623158E+308 #define MAXFLOAT 3.40282347E+38F #define MINDOUBLE 2.2250738585072014E-308 #define MINFLOAT 1.17549435E-38F #define MAXLDOUBLE 1.1897314953572317649E+4932L #define MINLDOUBLE 3.362103143112094E-4917L