IsNan
Check whether value is Not a Number
Declaration
Source position: math.pp line 259
function IsNan(const d: Single) : Boolean; Overload;
function IsNan(const d: Double) : Boolean; Overload;
function IsNan(const d: Extended) : Boolean; Overload;
Description
IsNan returns True if the double d contains Not A Number (a value which cannot be represented correctly in double format).
See also
| Name | Description |
|---|---|
| IsInfinite | Check whether value is infinite |
| IsZero | Check whether value is zero |