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iserror

error occurrence test

Calling Sequence

iserror([n])

Arguments

n

an integer, an error number

Description

Tests if error number n has occurred (after a call to errcatch). iserror returns 1 if the error occurred and 0 otherwise.

n>0 is the error number ; all errors are tested with n<0.

Examples

errcatch(4,'continue') // trap undefined variable
unknown
iserror() // 1
errclear()
iserror() // 0

See Also


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