Andrea Aime a écrit :
> GeoTools targets Java 5 at the moment. Due to differences in how
> Java 5 and Java 6 behave (the way they handle math calculations
> for example) some tests are failing in Java 6.
Andrea is right. I noticed issues in projection formulas around expressions
like
"atan(v1) / sqrt(v2)" when both v1 and v2 are very small. I get different
result
between Intel and AMD processors, between Java running in client and server
mode
and between 32 and 64 bits machines (not sure which one of all the above is the
main factor).
In practice it doesn't hurt since (at least in my tests) the projected
coordinates appear different only in place where it has no signifiance, like
the
longitude at poles. However the test suites have to be modified for taking in
account those special cases. I have already done this work in an other project,
pending completion for merge with GeoTools.
Martin
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