isNaN

bool

isNaN

(

)

(

D d

)

if (

isInstanceOf!(Decimal, D)

)

Return Value

Type: bool

If this decimal represents a positive or negative NaN

assert( isNaN(decimal("NaN")));
assert( isNaN(decimal("-NaN")));
assert(!isNaN(decimal("Inf")));
assert(!isNaN(decimal("1.001")));