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Standard library header <climits> - cppreference.com

From cppreference.com

This header was originally in the C standard library as <limits.h>.

This header is part of the type support library, in particular it's part of the C numeric limits interface.

Macros

BOOL_WIDTH

(C++26)

 bit width of bool
(macro constant) [edit]

CHAR_BIT

 bit width of byte
(macro constant) [edit]

MB_LEN_MAX

 maximum number of bytes in a multibyte character
(macro constant) [edit]

CHAR_WIDTH

(C++26)

 bit width of char
(macro constant) [edit]

CHAR_MIN

 minimum value of char
(macro constant) [edit]

CHAR_MAX

 maximum value of char
(macro constant) [edit]

SCHAR_WIDTHSHRT_WIDTHINT_WIDTHLONG_WIDTHLLONG_WIDTH

(C++26)(C++26)(C++26)(C++26)(C++26)

 bit width of signed char, short, int, long, and long long respectively
(macro constant) [edit]

SCHAR_MINSHRT_MININT_MINLONG_MINLLONG_MIN

(C++11)

 minimum value of signed char, short, int, long and long long respectively
(macro constant) [edit]

SCHAR_MAXSHRT_MAXINT_MAXLONG_MAXLLONG_MAX

(C++11)

 maximum value of signed char, short, int, long and long long respectively
(macro constant) [edit]

UCHAR_WIDTHUSHRT_WIDTHUINT_WIDTHULONG_WIDTHULLONG_WIDTH

(C++26)(C++26)(C++26)(C++26)(C++26)

 bit width of unsigned char, unsigned short, unsigned int, unsigned long, and unsigned long long respectively
(macro constant) [edit]

UCHAR_MAXUSHRT_MAXUINT_MAXULONG_MAXULLONG_MAX

(C++11)

 maximum value of unsigned char, unsigned short, unsigned int,
unsigned long and unsigned long long respectively
(macro constant) [edit]

Synopsis

// all freestanding
#define BOOL_WIDTH   /* see description */
#define CHAR_BIT     /* see description */
#define CHAR_WIDTH   /* see description */
#define SCHAR_WIDTH  /* see description */
#define UCHAR_WIDTH  /* see description */
#define USHRT_WIDTH  /* see description */
#define SHRT_WIDTH   /* see description */
#define UINT_WIDTH   /* see description */
#define INT_WIDTH    /* see description */
#define ULONG_WIDTH  /* see description */
#define LONG_WIDTH   /* see description */
#define ULLONG_WIDTH /* see description */
#define LLONG_WIDTH  /* see description */
#define SCHAR_MIN    /* see description */
#define SCHAR_MAX    /* see description */
#define UCHAR_MAX    /* see description */
#define CHAR_MIN     /* see description */
#define CHAR_MAX     /* see description */
#define MB_LEN_MAX   /* see description */
#define SHRT_MIN     /* see description */
#define SHRT_MAX     /* see description */
#define USHRT_MAX    /* see description */
#define INT_MIN      /* see description */
#define INT_MAX      /* see description */
#define UINT_MAX     /* see description */
#define LONG_MIN     /* see description */
#define LONG_MAX     /* see description */
#define ULONG_MAX    /* see description */
#define LLONG_MIN    /* see description */
#define LLONG_MAX    /* see description */
#define ULLONG_MAX   /* see description */