PureBasic Forums - English

Because PB 4.0 goes for thread safety and new types, I was a bit afraid that all this new stuff would hurt performance somehow. But now that my chess program has been converted to the new PB 4.0 syntax, I have to admit that I'm quite impressed. Although some critical parts of the game are coded in assembler, the new compiler gives a 15% speed improvement. The size of the executable grows by 2%, but that's near to nothing. But there's a problem: one test position gives a different result. There must be a difference between 3.94 and 4.0 in some calculation or comparison. To find such a thing is a coder's nightmare...

have you checked on this?

http://www.xs4all.nl/~bluez/datatalk/pu ... evaluation

if it's a calculation, start spreading the brackets...

Also note than as long you're not using the /THREAD switch (thread safe executable), all the libs/code generated is optimized for single threaded programs (like in 3.94).

Thanks blueznl, you're guide is very useful. Found something, will post it in the bugs section since it's very weird.