std::isunordered
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
(C++11)
|
categorizes the given floating-point value (function) |
(C++11)
|
checks if the given number is NaN (function) |
C documentation for isunordered |
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