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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/106117] Use of option -fexcess-precision for
 operation-by-operation emulation for _Float16 arithmetics.
Date: Wed, 29 Jun 2022 20:16:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106117

--- Comment #7 from joseph at codesourcery dot com <joseph at codesourcery =
dot com> ---
FLT_EVAL_METHOD of 0 gives _Float16 excess precision ("evaluate all=20
operations and constants, whose semantic type comprises a set of values=20
that is a strict subset of the values of float, to the range and precision=
=20
of float; evaluate all other operations and constants to the range and=20
precision of the semantic type").  See the -fpermitted-flt-eval-methods=3D=
=20
option that's used to control whether FLT_EVAL_METHOD may be defined to a=20
value such as 16 that's not part of C11.=