macro | isunordered(x,y) |
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function | bool isunordered (float x , float y); bool isunordered (double x , double y); bool isunordered (long double x, long double y); |
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true
. In no case the function raises a FE_INVALID exception.int
value. The type of both x and y shall be float
, double
or long double
.bool
value.true
(1
) if either x or y is NaN.false
(0
) otherwise.
|
|
sqrt(-1.0) and 0.0 cannot be ordered |