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2.5.3.78 IsErr

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The IsErr function calculates if the operand is a PtgErr parse token that does not have an error code equal to #N/A.

ABNF:

 IsErr = "ISERR(" val ")"

Required Arguments:

Name: Token

Type: vAny

An argument that specifies the operand of the calculation.

Return Value:

Type: PtgBool

This function returns a parse token of the type PtgBool with a value of TRUE if Token is a PtgErr parse token and the value of Token is not equal to #N/A; otherwise, the value of FALSE is returned.