>>>>> "CX" == CHEN Xuan <sakura286@outlook.com> writes: CX> Hifive Unmatched does not support NaN payload. In fact, this test CX> failure was initially found on Unmatched. I test it with -O0. RiscV in general only supports a single Cannonical NaN. No NaN payloads at all. -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: https://jhcloos.com/0x997A9F17ED7DAEA6.asc