https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89991
--- Comment #22 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Mon, Apr 08, 2019 at 10:17:00PM +0000, redi at gcc dot gnu.org wrote: > (In reply to kargl from comment #19) > > I get the expected. So, if you're on a system that has > > _GLIBCXX_USE_C99_COMPLEX, you won't see the bug. > > Wow, why isn't libstdc++ using the C99 <math.h> functions on FreeBSD? > Because it is all or nothing. See comment #8 and #9 in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125 If you're too busy to look at PR89125 the upshot is that FreeBSD is missing ccoshl, ccosl, cexpl, csinhl, csinl, ctanhl, and ctanl. I have BSD licensed versions of ccoshl, ccosl, cexpl, csinhl, and csinl, but testing on FreeBSD ran into what I consider to be a very bad bug in clang (FreeBSD system compiler).
