From 53ab360d94b5e8dec26fe698246e64f81ab60ca3 Mon Sep 17 00:00:00 2001
From: svartalf <self@svartalf.info>
Date: Thu, 4 Jan 2018 16:46:02 +0300
Subject: [PATCH] std::fmt::Display implemented for ParseFloatError

---
 src/lib.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 253f236..c71c4e4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,7 @@
 use std::ops::{Add, Sub, Mul, Div, Rem};
 use std::ops::{AddAssign, SubAssign, MulAssign, DivAssign, RemAssign};
 use std::num::Wrapping;
+use std::fmt;
 
 pub use bounds::Bounded;
 pub use float::{Float, FloatConst};
@@ -163,6 +164,17 @@ pub struct ParseFloatError {
     pub kind: FloatErrorKind,
 }
 
+impl fmt::Display for ParseFloatError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let description = match self.kind {
+            FloatErrorKind::Empty => "cannot parse float from empty string",
+            FloatErrorKind::Invalid => "invalid float literal",
+        };
+
+        description.fmt(f)
+    }
+}
+
 // FIXME: The standard library from_str_radix on floats was deprecated, so we're stuck
 // with this implementation ourselves until we want to make a breaking change.
 // (would have to drop it from `Num` though)