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  1.  Home
  2. RPG400-L
  3. September 2010

definintion of signed integer?

I have a variable defined "3i 0", local to a subprocedure that I expect
could be any whole number value from -128 to +127, per my understanding
of a signed integer. When my subprocedure puts what I expect to be a
minus 18 into the field, I get the dreaded "MCH1216 - too small to hold
result" crash & burn.

I'm sure I can fix it instantly by defining packed numerics, but I need
to understand the rules.

D PositiveValue 3u 0
D NegativeValue 3i 0
/free
PositiveValue = 3;
NegativeValue = PositiveValue - 21;
[down in flames we go]
/end-free

What could be so tough about subtracting 3 from 21 and expecting -18?
Please set me straight here. It's an SQLRPGLE program on a 6.1 box.

Many thanks.
Michael Koester


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