Re: [Plplot-devel] plstrm.h and PLINTs

[Maurice L. <mj...@ga...>]

Andrew Roach writes:
 > While trying to track down the problem with X20C and DJGPP I noticed that
 > there were several warnings for incompatible pointers being passed. Not a
 > real issue, it was just PLINT being passed to int and vice versa. Since
 > PLINT and int are usually the same it should not have made a real
 > difference to my problem, but it does present an ascetic situation for
 > compiling without warnings.
 > 
 > One thing I did find was that most of the new plimage commands expect
 > *dev_ix and *dev_iy in the PLStream structure to be defined as PLINT while
 > the PLStream structure defines them as type int. I know that is a simple
 > fix, but this is not really the reason I am writing the email. There are
 > many other variables of type "int" in PLStream, while the vast majority are
 > of type "PLINT". Is there any particular reason for this ? 

Any pointer should be a (PLINT *), without fail, else bad things can happen.
But for vanilla integers it doesn't matter so much.  For local temporary
variables I think it's preferable to just use int or long as appropriate.
The only negative is if you assign a PLINT to an int you might get compiler
warnings about possible overflow.

-- 
Maurice LeBrun    mj...@ga...