Add public-test-deps feature for better visibility control

library/compiler-builtins/src/float/mod.rs

@@ -11,9 +11,9 @@ pub mod mul;
 pub mod pow;
 pub mod sub;
 
+public_test_dep! {
 /// Trait for some basic operations on floats
-#[doc(hidden)]
-pub trait Float:
+pub(crate) trait Float:
     Copy
     + core::fmt::Debug
     + PartialEq
@@ -99,6 +99,7 @@ pub trait Float:
     /// Returns if `self` is subnormal
     fn is_subnormal(self) -> bool;
 }
+}
 
 macro_rules! float_impl {
     ($ty:ident, $ity:ident, $sity:ident, $expty:ident, $bits:expr, $significand_bits:expr) => {