table of contents
std::isunordered(3) | C++ Standard Libary | std::isunordered(3) |
NAME¶
std::isunordered - std::isunordered
Synopsis¶
Defined in header <cmath>
bool isunordered( float x, float y ); (1) (since C++11)
(constexpr since C++23)
bool isunordered( double x, double y ); (2) (since C++11)
(constexpr since C++23)
bool isunordered( long double x, long double y ); (3) (since
C++11)
(constexpr since C++23)
bool isunordered( Arithmetic x, Arithmetic y ); (4) (since
C++11)
(constexpr since C++23)
1-3) Determines if the floating point numbers x and y are unordered, that is,
one or
both are NaN and thus cannot be meaningfully compared with each other.
4) A set of overloads or a function template for all combinations of
arguments of
arithmetic type not covered by (1-3). If any argument has integral type, it
is cast
to double.
Parameters¶
x - floating point value
y - floating point value
Return value¶
true if either x or y is NaN, false otherwise
See also¶
fpclassify categorizes the given floating-point value
(C++11) (function)
isnan checks if the given number is NaN
(C++11) (function)
2022.07.31 | http://cppreference.com |