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std::isunordered

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isunordered
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Defined in header <cmath>
bool isunordered( float x, float y );
(since C++11)
bool isunordered( double x, double y );
(since C++11)
bool isunordered( long double x, long double y );
(since C++11)

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.

[edit] Parameters

x - floating point value
y - floating point value

[edit] Return value

true if either x or y is NaN, false otherwise

[edit] See also

categorizes the given floating point value
(function) [edit]
(C++11)
checks if the given number is NaN
(function) [edit]