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-rw-r--r--src/libcore/num/f32.rs7
-rw-r--r--src/libcore/num/f64.rs7
2 files changed, 12 insertions, 2 deletions
diff --git a/src/libcore/num/f32.rs b/src/libcore/num/f32.rs
index 43d38926c97..7f758f2a23b 100644
--- a/src/libcore/num/f32.rs
+++ b/src/libcore/num/f32.rs
@@ -8,7 +8,12 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Operations and constants for 32-bits floats (`f32` type)
+//! This module provides constants which are specific to the implementation
+//! of the `f32` floating point data type.
+//!
+//! Mathematically significant numbers are provided in the `consts` sub-module.
+//!
+//! *[See also the `f32` primitive type](../../std/primitive.f32.html).*
 
 #![stable(feature = "rust1", since = "1.0.0")]
 
diff --git a/src/libcore/num/f64.rs b/src/libcore/num/f64.rs
index 4ff80a2f05d..b9db4990a7e 100644
--- a/src/libcore/num/f64.rs
+++ b/src/libcore/num/f64.rs
@@ -8,7 +8,12 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Operations and constants for 64-bits floats (`f64` type)
+//! This module provides constants which are specific to the implementation
+//! of the `f64` floating point data type.
+//!
+//! Mathematically significant numbers are provided in the `consts` sub-module.
+//!
+//! *[See also the `f64` primitive type](../../std/primitive.f64.html).*
 
 #![stable(feature = "rust1", since = "1.0.0")]