On Wed, Apr 29, 2015 at 05:11:48PM -0700, Tom Lane wrote: > John Gorman <johngorm...@gmail.com> writes: > > Two of the trigonometry functions have differing error condition behavior > > between Linux and OSX. The Linux behavior follows the standard set by the > > other trig functions. > > We have never considered it part of Postgres' charter to try to hide > platform-specific variations in floating-point behavior. If we did, > we'd spend all our time doing that rather than more productive stuff. > > In particular, it appears to me that both of these behaviors are allowed > per the POSIX standard, which makes it very questionable why we should > insist that one is correct and the other is not. > > In addition, the proposed patch turns *all* cases that return NaN into > errors, which is wrong at least for the case where the input is NaN.
OS X is a MATH_ERREXCEPT, !MATH_ERRNO platform. PostgreSQL wrongly assumes that all platforms are MATH_ERRNO platforms. The correct fix is to use fetestexcept() on !MATH_ERRNO platforms. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
