Standard library header <climits>

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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.

[edit] Macros

CHAR_BIT
number of bits in byte
(macro constant)
MB_LEN_MAX
maximum number of bytes in a multibyte character
(macro constant)
CHAR_MIN
minimum value of char
(macro constant)
CHAR_MAX
maximum value of char
(macro constant)
SCHAR_MINSHRT_MININT_MINLONG_MINLLONG_MIN
(C++11)
minimum value of signed char, short, int, long and long long respectively
(macro constant)
SCHAR_MAXSHRT_MAXINT_MAXLONG_MAXLLONG_MAX
(C++11)
maximum value of signed char, short, int, long and long long respectively
(macro constant)
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)