Thanks for confirming. > 2018-04-11 0:13 GMT-03:00 David Rowley <david.row...@2ndquadrant.com>: > > I can recreate this when building with MSVC 2012. I confirm that I see > > the same as you. Microsoft are setting errno to EDOM in the above 3 > > cases, where in Linux the result is still NaN, just the errno is not > > set. > > > FWIW, I tested in MSVC 2017 (15.6.4) and it worked like expected. > Looking at , it seems there could be nasty bugs when using math functions > in MSVC < 2013 (or 2015). I don't have some older MSVC here to try > /fp:OPTIONHERE  to see if it makes any difference.
Thanks. Anyway currently PostgreSQL installers seem not be compiled with MSVC 2017, so it should be fix for current users? I updated the patch as David Rowley mentioned. --- Thanks and best regards, Dang Minh Huong NEC Solution Innovators, Ltd. http://www.nec-solutioninnovators.co.jp/en/