Update libm and simplify where it's used

Author: the-ssd

Cargo.lock

@@ -419,7 +419,7 @@ rustc-hash = { version = "2.1.1", default-features = false }
 libtest-mimic = "0.8.1"
 semver = { version = "1.0.27", default-features = false }
 ittapi = "0.4.0"
-libm = "0.2.15"
+libm = "0.2.16"
 tokio-rustls = "0.25.0"
 rustls = "0.22.0"
 tokio-native-tls = "0.3.1"

Cargo.toml

@@ -705,24 +705,7 @@ macro_rules! ieee_float {
                 /// with an even least significant digit.
                 pub fn round_ties_even(self) -> Self {
                     // TODO: when libm v0.2.16 is published line below can be used instead
-                    // Self::with_float(Libm::<$float_ty>::roundeven(self.$as_float()))
-                    return Self::with_float(self.$as_float().roundeven());
-
-                    trait Roundeven {
-                        fn roundeven(self) -> Self;
-                    }
-
-                    impl Roundeven for f32 {
-                        fn roundeven(self) -> Self {
-                            libm::roundevenf(self)
-                        }
-                    }
-
-                    impl Roundeven for f64 {
-                        fn roundeven(self) -> Self {
-                            libm::roundeven(self)
-                        }
-                    }
+                    Self::with_float(Libm::<$float_ty>::roundeven(self.$as_float()))
                 }
             )?
         }