4 files changed, 3 insertions, 9 deletions
diff --git a/src/libcore/num/f32.rs b/src/libcore/num/f32.rs
index e687f482fa9..8c34219ae21 100644
--- a/src/libcore/num/f32.rs
+++ b/src/libcore/num/f32.rs
@@ -425,9 +425,7 @@ impl Exponential for f32 {
 
     #[inline(always)]
     fn log10(&self) -> f32 { log10(*self) }
-}
 
-impl Hyperbolic for f32 {
     #[inline(always)]
     fn sinh(&self) -> f32 { sinh(*self) }
 
diff --git a/src/libcore/num/f64.rs b/src/libcore/num/f64.rs
index d00e6ae2c0d..19951ad7cff 100644
--- a/src/libcore/num/f64.rs
+++ b/src/libcore/num/f64.rs
@@ -437,9 +437,7 @@ impl Exponential for f64 {
 
     #[inline(always)]
     fn log10(&self) -> f64 { log10(*self) }
-}
 
-impl Hyperbolic for f64 {
     #[inline(always)]
     fn sinh(&self) -> f64 { sinh(*self) }
 
diff --git a/src/libcore/num/float.rs b/src/libcore/num/float.rs
index 3aa8848cdbe..c64f36f065f 100644
--- a/src/libcore/num/float.rs
+++ b/src/libcore/num/float.rs
@@ -547,9 +547,7 @@ impl Exponential for float {
     fn log10(&self) -> float {
         (*self as f64).log10() as float
     }
-}
 
-impl Hyperbolic for float {
     #[inline(always)]
     fn sinh(&self) -> float {
         (*self as f64).sinh() as float
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;