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how to catch a math error? [message #34805]

Thu, 17 April 2003 12:17

J Li
Messages: 1
Registered: April 2003

Junior Member

Hi,

I am trying to figure out how to trap the math error and dump the error
message to a file. Math error is somehow different than other types of
errors? My test program is listed below.

I have done tests for I/O error or raising an exception by issuing a
"message" call. They all work as expected, that is I got error message in
the myLog.err file and the program exited gracefully. So far, I have not
been able to do the same for math error. Please help!

Email: jylimd(at)yahoo(dot)com

pro test3
on_error, 2
print, "i am in test3"
x = 1 / 0
; message, "Error occurs in test 3"
end

pro test2
on_error,2
print, "i am in test2"
test3
end

pro test1
on_error,2
print, "i am in test 1"
test2
end

pro test

Catch, myError
if(myError NE 0) then begin
Catch, /Cancel
openw, lun, "myLog.err", /get_lun
printf,lun, !Error_State.Msg
free_lun, lun
return
endif
test1

end

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how to catch a math error?

By: J Li on Thu, 17 April 2003 12:17

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