Robin H. Johnson wrote: > On Wed, Jul 20, 2005 at 10:32:29AM -0700, Donnie Berkholz wrote: > >>Duncan wrote: >>| The AT guidelines (available for amd64 ATs here: >>| http://www.gentoo.org/proj/en/base/amd64/tests/index.xml ) specifically >>| mention testing "every conceivable permutation", >>That's an absolute joke for reasonably large packages with say, >=10 USE >>flags. I had to look up my combinations math, but it looks like you're >>already into thousands of possibilities with even 10 flags. > > For PHP with 41 flags (98 in current revisions of PHP5), the numbers > make it simply impossible to test every combination.
10 flags -> 2^10 -> 1024 41 flags -> 2^41 -> 2 199 023 255 552 98 flags -> 2^98 -> 316 912 650 057 057 350 374 175 801 344 Enjoy :-) -jkt -- cd /local/pub && more beer > /dev/mouth
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