From 2bee6132f9a3c2475808da90beba4b20fb12a6eb Mon Sep 17 00:00:00 2001
From: Grahame Bowland <grahame@angrygoats.net>
Date: Mon, 9 Apr 2012 01:33:36 +0800
Subject: [PATCH] write out "inf"/"-inf" in float::to_str_common

---
 src/libcore/float.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libcore/float.rs b/src/libcore/float.rs
index 9699032dd77..fa7a493d8a1 100644
--- a/src/libcore/float.rs
+++ b/src/libcore/float.rs
@@ -42,6 +42,8 @@ Converts a float to a string
 "]
 fn to_str_common(num: float, digits: uint, exact: bool) -> str {
     if is_NaN(num) { ret "NaN"; }
+    if num == infinity { ret "inf"; }
+    if num == neg_infinity { ret "-inf"; }
     let mut (num, accum) = if num < 0.0 { (-num, "-") } else { (num, "") };
     let trunc = num as uint;
     let mut frac = num - (trunc as float);