Hi! On 08/23/2011 12:35 PM, Tamas Istvan wrote:

It's works fine with the -fno-builtin-cos_sin option.

Aha! Well you've not only found a hidden "feature", but also the secret switch to turn it off. At least, I am unable to find any reference whatsoever to that builtin or to that particular switch. I bet this is a trick to cheat in benchmarks. Surely, some common benchmark contains numeric code with a cos_sin function and they replace it with their highly tuned version. (They must be targeting at some external code: If it would be for internal use only they would've prefixed it with underscores.) But with CLN, this clever plot turns into a serious bug. On 2011.08.22. 17:30, Tamas Istvan wrote:

(Anyway, the Intel Compiler Studio is free for Linux.)

Not quite: it's gratis. <http://en.wikipedia.org/wiki/Gratis_versus_libre> Best wishes, and thanks a lot for this hilarious finding! -richy. -- Richard B. Kreckel <http://www.ginac.de/~kreckel/>