首页 > 代码库 > <climits>头文件定义的符号常量

<climits>头文件定义的符号常量

<climits>头文件定义的符号常量

CHAR_MIN       char的最小值
SCHAR_MAX      signed char 最大值
SCHAR_MIN       signed char 最小值
UCHAR_MAX      unsigned char 最大值
SHRT_MAX       short 最大值
SHRT_MIN       short 最小值
USHRT_MAX      unsigned short 最大值
INT_MAX       int 最大值
INT_MIN        int 最小值
UINT_MAX       unsigned int 最大值
UINT_MIN        unsigned int 最小值
LONG_MAX      long最大值
LONG_MIN       long最小值
ULONG_MAX      unsigned long 最大值
FLT_MANT_DIG    float 类型的尾数
FLT_DIG         float 类型的最少有效数字位数
FLT_MIN_10_EXP   带有全部有效数的float类型的负指数的最小值(以10为底)
FLT_MAX_10_EXP    float类型的正指数的最大值(以10为底)
FLT_MIN        保留全部精度的float类型正数最小值
FLT_MAX        float类型正数最大值

来自于C++手册的解释:

nameexpressesvalue*
CHAR_BITNumber of bits in a char object (byte)8 or greater*
SCHAR_MINMinimum value for an object of type signed char-127 (-27+1) or less*
SCHAR_MAXMaximum value for an object of type signed char127 (27-1) or greater*
UCHAR_MAXMaximum value for an object of type unsigned char255 (28-1) or greater*
CHAR_MINMinimum value for an object of type chareither SCHAR_MIN or 0
CHAR_MAXMaximum value for an object of type chareither SCHAR_MAX or UCHAR_MAX
MB_LEN_MAXMaximum number of bytes in a multibyte character, for any locale1 or greater*
SHRT_MINMinimum value for an object of type short int-32767 (-215+1) or less*
SHRT_MAXMaximum value for an object of type short int32767 (215-1) or greater*
USHRT_MAXMaximum value for an object of type unsigned short int65535 (216-1) or greater*
INT_MINMinimum value for an object of type int-32767 (-215+1) or less*
INT_MAXMaximum value for an object of type int32767 (215-1) or greater*
UINT_MAXMaximum value for an object of type unsigned int65535 (216-1) or greater*
LONG_MINMinimum value for an object of type long int-2147483647 (-231+1) or less*
LONG_MAXMaximum value for an object of type long int2147483647 (231-1) or greater*
ULONG_MAXMaximum value for an object of type unsigned long int4294967295 (232-1) or greater*
LLONG_MINMinimum value for an object of type long long int-9223372036854775807 (-263+1) or less*
LLONG_MAXMaximum value for an object of type long long int9223372036854775807 (263-1) or greater*
ULLONG_MAXMaximum value for an object of type unsigned long long int18446744073709551615 (264-1) or greater*


<climits>头文件定义的符号常量