Function isNaN #
Test whether a value is NaN (not a number).
The function supports types number, BigNumber, Fraction, Unit and Complex.
The function is evaluated element-wise in case of Array or Matrix input.
Syntax #
math.isNaN(x)
Parameters #
| Parameter | Type | Description |
|---|---|---|
x |
number | BigNumber | Fraction | Unit | Array | Matrix | Value to be tested |
Returns #
| Type | Description |
|---|---|
| boolean | Returns true when x is NaN. Throws an error in case of an unknown data type. |
Throws #
Type | Description —- | ———–
Examples #
math.isNaN(3) // returns false
math.isNaN(NaN) // returns true
math.isNaN(0) // returns false
math.isNaN(math.bignumber(NaN)) // returns true
math.isNaN(math.bignumber(0)) // returns false
math.isNaN(math.fraction(-2, 5)) // returns false
math.isNaN('-2') // returns false
math.isNaN([2, 0, -3, NaN]) // returns [false, false, false, true]
