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- unsigned variables [message #41055] Thu, 23 September 2004 15:56
hanswurst247 is currently offline  hanswurst247
Messages: 2
Registered: September 2004
Junior Member
A strange behavior in IDL occured to me.

In C++ if I do:
unsigned short x=1;
printf("%d",-x);
I get
-1
like I would expect.

In IDL however:
x=1U
print, -x
gives
65535
So it basically treats it like I had done:
print, uint(-1)

Does anybody have an explanation for this?
Is this, because of a typecast before executing the print?
(Can creat bugs, which are hard to localize.)

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