Provide more context for what the {f32,f64}::EPSILON values represent.

12878a78 · Corey Farwell · 22c25dd7 · 12878a78 · 12878a78
隐藏空白更改
内联并排

Showing with 10 addition and 2 deletion

src/libcore/num/f32.rs src/libcore/num/f32.rs +5 -1

src/libcore/num/f64.rs src/libcore/num/f64.rs +5 -1

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--- a/src/libcore/num/f32.rs
+++ b/src/libcore/num/f32.rs
@@ -33,7 +33,11 @@
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const DIGITS: u32 = 6;

-/// Difference between `1.0` and the next largest representable number.
+/// [Machine epsilon] value for `f32`.
+///
+/// This is the difference between `1.0` and the next largest representable number.
+///
+/// [Machine epsilon]: https://en.wikipedia.org/wiki/Machine_epsilon
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const EPSILON: f32 = 1.19209290e-07_f32;


--- a/src/libcore/num/f64.rs
+++ b/src/libcore/num/f64.rs
@@ -33,7 +33,11 @@
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const DIGITS: u32 = 15;

-/// Difference between `1.0` and the next largest representable number.
+/// [Machine epsilon] value for `f64`.
+///
+/// This is the difference between `1.0` and the next largest representable number.
+///
+/// [Machine epsilon]: https://en.wikipedia.org/wiki/Machine_epsilon
 #[stable(feature = "rust1", since = "1.0.0")]
 pub const EPSILON: f64 = 2.2204460492503131e-16_f64;