1 files changed, 3 insertions, 3 deletions
diff --git a/src/libcore/num/num.rs b/src/libcore/num/num.rs
index 3e43ebfef12..30a1213f7ff 100644
--- a/src/libcore/num/num.rs
+++ b/src/libcore/num/num.rs
@@ -131,9 +131,9 @@ pub trait Exponential {
     fn log(&self) -> Self;
     fn log2(&self) -> Self;
     fn log10(&self) -> Self;
-}
 
-pub trait Hyperbolic: Exponential {
+    // The Hyperbolic Functions are trivially implemented in terms of `exp`, so it's  simpler
+    // to group them within this trait. In the future these would have default implementations.
     fn sinh(&self) -> Self;
     fn cosh(&self) -> Self;
     fn tanh(&self) -> Self;
@@ -146,7 +146,7 @@ pub trait Real: Signed
               + Fractional
               + Algebraic
               + Trigonometric
-              + Hyperbolic {
+              + Exponential {
     // Common Constants
     // FIXME (#5527): These should be associated constants
     fn pi() -> Self;