18 Language support library [language.support]

18.3 Implementation properties [support.limits]

18.3.3 C library [c.limits]

1

Table [tab:support.hdr.climits] describes the header <climits>.

Table 31 — Header <climits> synopsis
TypeName(s)
Values:
CHAR_BIT INT_MAX LONG_MAX SCHAR_MIN SHRT_MIN ULLONG_MAX
CHAR_MAX LLONG_MAX LONG_MIN SCHAR_MAX UCHAR_MAX ULONG_MAX
CHAR_MIN LLONG_MIN MB_LEN_MAX SHRT_MAX UINT_MAX USHRT_MAX
INT_MIN
2

The contents are the same as the Standard C library header <limits.h>. [ Note: The types of the constants defined by macros in <climits> are not required to match the types to which the macros refer. — end note ]

3

Table [tab:support.hdr.cfloat] describes the header <cfloat>.

Table 32 — Header <cfloat> synopsis
TypeName(s)
Values:
DBL_DIG DBL_MIN_EXP FLT_MAX_EXP LDBL_MANT_DIG
DBL_EPSILON DECIMAL_DIG FLT_MIN LDBL_MAX_10_EXP
DBL_MANT_DIG FLT_DIG FLT_MIN_10_EXP LDBL_MAX_EXP
DBL_MAX FLT_EPSILON FLT_MIN_EXP LDBL_MAX
DBL_MAX_10_EXP FLT_EVAL_METHOD FLT_RADIX LDBL_MIN
DBL_MAX_EXP FLT_MANT_DIG FLT_ROUNDS LDBL_MIN_10_EXP
DBL_MIN FLT_MAX LDBL_DIG LDBL_MIN_EXP
DBL_MIN_10_EXP FLT_MAX_10_EXP LDBL_EPSILON
4

The contents are the same as the Standard C library header <float.h>.

See also: ISO C 7.1.5, 5.2.4.2.2, 5.2.4.2.1.