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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/108742] Incorrect constant folding with (or exposed by)
 -fexcess-precision=standard
Date: Thu, 09 Feb 2023 17:26:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108742

--- Comment #11 from joseph at codesourcery dot com <joseph at codesourcery=
 dot com> ---
As discussed, FLT_EVAL_METHOD applies to constants as well as to=20
operations.  See the example in C17 F.8.5, for example; it shows

float y =3D 1.1e75f; // may raise exceptions

since 1.1e75f may be evaluated to a wider range and precision than those=20
of float, in which case the conversion to the range and precision of float=
=20
occurs at runtime (whereas if there is no excess range and precision for=20
float, the constant is evaluated to positive infinity of type float at=20
translation time).=