[postgis-devel] Memory alignment issues

[Markus Schaber]

Hi, Strk,

strk at refractions.net wrote:

>>>the third is a NOTICE message that isn't in the expected output.
>>
>>> > NOTICE:  Self-intersection
>>
>>Hmm, does this and the slight geometry changes point to a possible problem?
> 
> The notice is expected.

Okay, fine.

> The slight geometry change *might* be a problem in GEOS, but it
> is not easy to tell, I'm having similar mismatches between GEOS
> and JTS as well.

This might be because of different floating point accuracies, AFAIR the
C++ standard does not define anything about them, while the Java
standard has rather exact definitions wr/t floating point semantics.

Markus