Update stable Rust and typos (#132)

Author: waywardmonkeys

.github/workflows/ci.yml

@@ -3,7 +3,7 @@ env:
   # version like 1.70. Note that we only specify MAJOR.MINOR and not PATCH so that bugfixes still
   # come automatically. If the version specified here is no longer the latest stable version,
   # then please feel free to submit a PR that adjusts it along with the potential clippy fixes.
-  RUST_STABLE_VER: "1.83" # In quotes because otherwise (e.g.) 1.70 would be interpreted as 1.7
+  RUST_STABLE_VER: "1.84" # In quotes because otherwise (e.g.) 1.70 would be interpreted as 1.7
   # The purpose of checking with the minimum supported Rust toolchain is to detect its staleness.
   # If the compilation fails, then the version specified here needs to be bumped up to reality.
   # Be sure to also update the rust-version property in the workspace Cargo.toml file,
@@ -324,4 +324,4 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: check typos
-        uses: crate-ci/typos@v1.28.4
+        uses: crate-ci/typos@v1.29.4

Cargo.toml

@@ -13,6 +13,8 @@ version = "0.2.2"
 edition = "2021"
 # Keep in sync with RUST_MIN_VER in .github/workflows/ci.yml, with the relevant README.md files
 # and with the MSRV in the `Unreleased` section of CHANGELOG.md.
+# When updating to 1.83 or later, update `color/src/flags.rs` and remove this note.
+# When updating to 1.84 or later, update `color/src/floatfuncs.rs` and remove this note.
 rust-version = "1.82"
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/linebender/color"

color/src/floatfuncs.rs

@@ -1,6 +1,14 @@
 // Copyright 2024 the Color Authors
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
+// In Rust 1.84 (https://github.com/rust-lang/rust/pull/131304), `abs` and
+// `copysign` were added to `core`, so we no longer need these forwarded to
+// libm.
+#![cfg_attr(
+    not(feature = "std"),
+    allow(dead_code, reason = "abs and copysign were added to core in 1.84")
+)]
+
 //! Shims for math functions that ordinarily come from std.
 
 /// Defines a trait that chooses between libstd or libm implementations of float methods.
@@ -35,10 +43,12 @@ macro_rules! define_float_funcs {
 }
 
 define_float_funcs! {
+    // This is not needed once the MSRV is 1.84 or later.
     fn abs(self) -> Self => fabsf;
     fn atan2(self, other: Self) -> Self => atan2f;
     fn cbrt(self) -> Self => cbrtf;
     fn ceil(self) -> Self => ceilf;
+    // This is not needed once the MSRV is 1.84 or later.
     fn copysign(self, sign: Self) -> Self => copysignf;
     fn floor(self) -> Self => floorf;
     fn hypot(self, other: Self) -> Self => hypotf;