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Dave,
Maybe you need to go at it from a different angle. Can you add 20 years to the ClientBirhtDate? Something like this?
// Check if client was aged under 20
If = ( ClientBirthDate + %YEARS(20) ) <= ContractStartDate;
Gary Monnier
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Dave
Sent: Friday, May 18, 2012 3:50 AM
To: RPG programming on the IBM i / System i
Subject: more rpg maths
Hi all,
Even after reading the wonderful post re:EVAL(H) question at
http://archive.midrange.com/rpg400-l/200908/msg00069.html , I'm not sure about this one :
// Check if client was aged under 20
If = %subdt ( ContractStartDate : *YEARS) -
%subdt ( ClientBirthDate : *YEARS) <=20;
If the client is born AFTER the contract start date, I get an MCH1210.
Someone told me it's because RPG will create a temporary variable of the same type as the operators to contain the result, ie, an integer, so as the result is negative, it crashes.
I can get round my problem with %INT but I'd like an official confirmation or explanation if possible. Anyone know where I that might be documented?
Thanks
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