C numeric limits interface
From cppreference.com
See also std::numeric_limits interface.
| Defined in header
<cstdint> |
|
| PTRDIFF_MIN
(C++11)
|
minimum value of object of std::ptrdiff_t type (macro constant) |
| PTRDIFF_MAX
(C++11)
|
maximum value of object of std::ptrdiff_t type (macro constant) |
| SIZE_MAX
(C++11)
|
maximum value of object of std::size_t type (macro constant) |
| SIG_ATOMIC_MIN
(C++11)
|
minimum value of object of std::sig_atomic_t type (macro constant) |
| SIG_ATOMIC_MAX
(C++11)
|
maximum value of object of std::sig_atomic_t type (macro constant) |
| WCHAR_MIN
(C++11)
|
minimum value of object of wchar_t type (macro constant) |
| WCHAR_MAX
(C++11)
|
maximum value of object of wchar_t type (macro constant) |
| WINT_MIN
(C++11)
|
minimum value of object of std::wint_t type (macro constant) |
| WINT_MAX
(C++11)
|
maximum value of object of std::wint_t type (macro constant) |
[edit] Limits of integer types
| Defined in header
<climits> |
|
| 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_MIN
SHRT_MIN INT_MIN LONG_MIN LLONG_MIN (C++11)
|
minimum value of signed char, short, int, long and long long respectively (macro constant) |
| SCHAR_MAX
SHRT_MAX INT_MAX LONG_MAX LLONG_MAX (C++11)
|
maximum value of signed char, short, int, long and long long respectively (macro constant) |
| UCHAR_MAX
USHRT_MAX UINT_MAX ULONG_MAX ULLONG_MAX (C++11)
|
maximum value of unsigned char, unsigned short, unsigned int, unsigned long and unsigned long long respectively (macro constant) |
[edit] Limits of floating point types
| Defined in header
<cfloat> |
|
| FLT_RADIX |
the radix (integer base) used by the representation of all three floating-point types (macro constant) |
| DECIMAL_DIG
(C++11)
|
number of decimal digits that can be converted to long double and back without losing precision (macro constant) |
| FLT_MIN DBL_MIN LDBL_MIN |
minimum value of float, double and long double respectively (macro constant) |
| FLT_MAX DBL_MAX LDBL_MAX |
maximum value of float, double and long double respectively (macro constant) |
| FLT_EPSILON DBL_EPSILON LDBL_EPSILON |
difference between 1.0 and the next representable value for float, double and long double respectively (macro constant) |
| FLT_DIG DBL_DIG LDBL_DIG |
number of decimal digits that can be represented without losing precision for float, double and long double respectively (see std::numeric_limits::digits10 for explanation) (macro constant) |
| FLT_MANT_DIG DBL_MANT_DIG LDBL_MANT_DIG |
number of base FLT_RADIX digits that can be represented without losing precision for float, double and long double respectively (macro constant) |
| FLT_MIN_EXP DBL_MIN_EXP LDBL_MIN_EXP |
minimum negative integer such that FLT_RADIX raised by power one less than that integer is a normalized float, double and long double respectively (macro constant) |
| FLT_MIN_10_EXP DBL_MIN_10_EXP LDBL_MIN_10_EXP |
minimum negative integer such that 10 raised by power one less than that integer is a normalized float, double and long double respectively (macro constant) |
| FLT_MAX_EXP DBL_MAX_EXP LDBL_MAX_EXP |
maximum positive integer such that FLT_RADIX raised by power one more than that integer is a normalized float, double and long double respectively (macro constant) |
| FLT_MAX_10_EXP DBL_MAX_10_EXP LDBL_MAX_10_EXP |
maximum positive integer such that 10 raised by power one more than that integer is a normalized float, double and long double respectively (macro constant) |
| default rounding mode of floating-point arithmetics (macro constant) |
|
| (C++11)
|
specifies in what precision all arithmetic operations are done (macro constant) |