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