https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68686
--- Comment #4 from Ed Smith-Rowland <3dw4rd at verizon dot net> --- Created attachment 41079 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41079&action=edit Correct sign of negative arg tgammaq. Basically, return (x > 0.0Q || (int)(-x) & 1) ? +res : -res; CL: 2017-03-29 Edward Smith-Rowland <3dw...@verizon.net> PR libquadmath/68686 * math/tgammaq.c: Correct sign for negative argument. * testsuite/pr68686.c We need a testsuite for libquadmath? pr68686.c -------------------------------------------------------- #include <quadmath.h> #include <assert.h> int main(void) { __float128 result = tgammaq(-1.5Q); assert(result > 0.0Q); result = tgammaq(-2.5Q); assert(result < 0.0Q); return 0; } --------------------------------------------------------
