iserror

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

• error — error message
• error_table — table of error messages
• errcatch — error trapping