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Rollup merge of #119782 - RalfJung:rint, r=cuviper

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rint intrinsics: caution against actually trying to check for floating-point exceptions
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Matthias Krüger 2024-01-10 06:28:45 +01:00 committed by GitHub
commit 3fcddf19e7
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library/core/src/intrinsics.rs
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@ -1787,6 +1787,8 @@ extern "rust-intrinsic" {
/// so this rounds half-way cases to the number with an even least significant digit.
///
/// May raise an inexact floating-point exception if the argument is not an integer.
/// However, Rust assumes floating-point exceptions cannot be observed, so this is not something that
/// can actually be used from Rust code.
///
/// The stabilized version of this intrinsic is
/// [`f32::round_ties_even`](../../std/primitive.f32.html#method.round_ties_even)
@ -1796,6 +1798,8 @@ extern "rust-intrinsic" {
/// so this rounds half-way cases to the number with an even least significant digit.
///
/// May raise an inexact floating-point exception if the argument is not an integer.
/// However, Rust assumes floating-point exceptions cannot be observed, so this is not something that
/// can actually be used from Rust code.
///
/// The stabilized version of this intrinsic is
/// [`f64::round_ties_even`](../../std/primitive.f64.html#method.round_ties_even)