https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110622
--- Comment #12 from Mathieu Malaterre <malat at debian dot org> --- I am seeing a difference in result (log1p computation) in the range: 4318952042648305665 - 0x1.0000000000001p-64 4368493837572636672 - 0x1.002p-53 the other values seems to match expectation of log1p computation.