https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123015
Igor Shevlyakov <igor at tachyum dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |igor at tachyum dot com
--- Comment #2 from Igor Shevlyakov <igor at tachyum dot com> ---
A quote from IEEE-754-2019:
"Invalid operation is the only exception that a comparison predicate can
signal. All predicates signal the
invalid operation exception on signaling NaN operands. The predicates named
Quiet shall not signal any
exception, unless an operand is a signaling NaN. The predicates named Signaling
shall signal the invalid
operation exception on quiet NaN operands."
So isordered() will produce INV on sNaNs, while isnan() implemented via
fpcalssify, don't
