2.5.4.55 IsError

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The IsError function calculates if the operand is a PtgErr.

ABNF:

 IsError = val " ISERROR():128"

Required Arguments:

Name: Token

Type: vAny

An argument that specifies the operand of the calculation.

Return Value:

Type: PtgBool

This function returns a PtgBool with a value of TRUE if Token is a PtgErr, and a value of FALSE otherwise.