diff --git a/library/core/src/num/f128.rs b/library/core/src/num/f128.rs
index 58de62a8be8d8..4c09c930c796f 100644
--- a/library/core/src/num/f128.rs
+++ b/library/core/src/num/f128.rs
@@ -1422,6 +1422,7 @@ impl f128 {
 // due to https://github.com/llvm/llvm-project/issues/44744. aarch64 linux matches this.
 // #[unstable(feature = "core_float_math", issue = "137578")]
 #[cfg(not(test))]
+#[doc(test(attr(feature(cfg_target_has_reliable_f16_f128), expect(internal_features))))]
 impl f128 {
     /// Returns the largest integer less than or equal to `self`.
     ///
@@ -1431,8 +1432,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1464,8 +1463,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1497,8 +1494,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1535,8 +1530,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1570,8 +1563,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1604,8 +1595,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1646,8 +1635,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1694,8 +1681,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1739,8 +1724,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1779,8 +1762,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1814,8 +1795,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
diff --git a/library/core/src/num/f16.rs b/library/core/src/num/f16.rs
index 45f402d496717..1d98a485c4f72 100644
--- a/library/core/src/num/f16.rs
+++ b/library/core/src/num/f16.rs
@@ -1398,6 +1398,7 @@ impl f16 {
 // Functions in this module fall into `core_float_math`
 // #[unstable(feature = "core_float_math", issue = "137578")]
 #[cfg(not(test))]
+#[doc(test(attr(feature(cfg_target_has_reliable_f16_f128), expect(internal_features))))]
 impl f16 {
     /// Returns the largest integer less than or equal to `self`.
     ///
@@ -1407,8 +1408,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1440,8 +1439,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1473,8 +1470,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1511,8 +1506,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1546,8 +1539,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1580,8 +1571,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1622,8 +1611,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1670,8 +1657,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1715,8 +1700,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1755,8 +1738,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1790,8 +1771,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1828,8 +1807,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
diff --git a/library/std/src/num/f128.rs b/library/std/src/num/f128.rs
index c0190de089f4a..64e604e35f75f 100644
--- a/library/std/src/num/f128.rs
+++ b/library/std/src/num/f128.rs
@@ -5,6 +5,7 @@
 //! Mathematically significant numbers are provided in the `consts` sub-module.
 
 #![unstable(feature = "f128", issue = "116909")]
+#![doc(test(attr(feature(cfg_target_has_reliable_f16_f128), expect(internal_features))))]
 
 #[unstable(feature = "f128", issue = "116909")]
 pub use core::f128::consts;
@@ -27,8 +28,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -59,8 +58,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -93,8 +90,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -127,8 +122,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -146,8 +139,6 @@ impl f128 {
     /// Non-positive values:
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -180,8 +171,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -197,8 +186,6 @@ impl f128 {
     /// Non-positive values:
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -227,8 +214,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -244,8 +229,6 @@ impl f128 {
     /// Non-positive values:
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -274,8 +257,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -291,8 +272,6 @@ impl f128 {
     /// Non-positive values:
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -323,8 +302,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -362,8 +339,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -395,8 +370,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -426,8 +399,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -460,8 +431,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -495,8 +464,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -533,8 +500,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -570,8 +535,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -611,8 +574,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -656,8 +617,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -694,8 +653,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -733,8 +690,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -751,8 +706,6 @@ impl f128 {
     /// Out-of-range values:
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -783,8 +736,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -821,8 +772,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -859,8 +808,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -894,8 +841,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -929,8 +874,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -966,8 +909,6 @@ impl f128 {
     ///
     /// ```
     /// #![feature(f128)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1003,8 +944,6 @@ impl f128 {
     /// ```
     /// #![feature(f128)]
     /// #![feature(float_gamma)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1041,8 +980,6 @@ impl f128 {
     /// ```
     /// #![feature(f128)]
     /// #![feature(float_gamma)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     ///
@@ -1079,8 +1016,6 @@ impl f128 {
     /// ```
     /// #![feature(f128)]
     /// #![feature(float_erf)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     /// /// The error function relates what percent of a normal distribution lies
@@ -1121,8 +1056,6 @@ impl f128 {
     /// ```
     /// #![feature(f128)]
     /// #![feature(float_erf)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f128_math)] {
     /// let x: f128 = 0.123;
diff --git a/library/std/src/num/f16.rs b/library/std/src/num/f16.rs
index 4a4a8fd839a97..7bdefb05858ef 100644
--- a/library/std/src/num/f16.rs
+++ b/library/std/src/num/f16.rs
@@ -5,6 +5,7 @@
 //! Mathematically significant numbers are provided in the `consts` sub-module.
 
 #![unstable(feature = "f16", issue = "116909")]
+#![doc(test(attr(feature(cfg_target_has_reliable_f16_f128), expect(internal_features))))]
 
 #[unstable(feature = "f16", issue = "116909")]
 pub use core::f16::consts;
@@ -27,8 +28,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -59,8 +58,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -93,8 +90,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -127,8 +122,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -146,8 +139,6 @@ impl f16 {
     /// Non-positive values:
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -180,8 +171,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -197,8 +186,6 @@ impl f16 {
     /// Non-positive values:
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -227,8 +214,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -244,8 +229,6 @@ impl f16 {
     /// Non-positive values:
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -274,8 +257,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -291,8 +272,6 @@ impl f16 {
     /// Non-positive values:
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -325,8 +304,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -358,8 +335,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -389,8 +364,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -423,8 +396,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -458,8 +429,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -496,8 +465,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -533,8 +500,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -574,8 +539,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -619,8 +582,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -657,8 +618,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -696,8 +655,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -714,8 +671,6 @@ impl f16 {
     /// Out-of-range values:
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -746,8 +701,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -784,8 +737,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -822,8 +773,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -857,8 +806,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -892,8 +839,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -929,8 +874,6 @@ impl f16 {
     ///
     /// ```
     /// #![feature(f16)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -966,8 +909,6 @@ impl f16 {
     /// ```
     /// #![feature(f16)]
     /// #![feature(float_gamma)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1004,8 +945,6 @@ impl f16 {
     /// ```
     /// #![feature(f16)]
     /// #![feature(float_gamma)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     ///
@@ -1042,8 +981,6 @@ impl f16 {
     /// ```
     /// #![feature(f16)]
     /// #![feature(float_erf)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     /// /// The error function relates what percent of a normal distribution lies
@@ -1084,8 +1021,6 @@ impl f16 {
     /// ```
     /// #![feature(f16)]
     /// #![feature(float_erf)]
-    /// # #![feature(cfg_target_has_reliable_f16_f128)]
-    /// # #![expect(internal_features)]
     /// # #[cfg(not(miri))]
     /// # #[cfg(target_has_reliable_f16_math)] {
     /// let x: f16 = 0.123;