std::signbit

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Defined in header <cmath>
bool signbit( float arg );
(since C++11)
bool signbit( double arg );
(since C++11)
bool signbit( long double arg );
(since C++11)


Determines if the given floating point number arg is negative.

[edit] Parameters

arg - floating point value

[edit] Return value

true if arg is negative, false otherwise

[edit] See also

absolute value of a floating point value (|x|)
(function)
(C++11)
copies the sign of a floating point value
(function)
C documentation for signbit