From 04b08da9af0c450d645ab7389d1467308cfc2db8 Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <stapelberg@debian.org>
Date: Mon, 4 Mar 2013 21:27:36 +0100
Subject: Imported Upstream version 1.1~hg20130304

---
 src/pkg/math/log10.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/pkg/math/log10.go')

diff --git a/src/pkg/math/log10.go b/src/pkg/math/log10.go
index 67c163a49..95cfbf47c 100644
--- a/src/pkg/math/log10.go
+++ b/src/pkg/math/log10.go
@@ -17,5 +17,6 @@ func log10(x float64) float64 {
 func Log2(x float64) float64
 
 func log2(x float64) float64 {
-	return Log(x) * (1 / Ln2)
+	frac, exp := Frexp(x)
+	return Log(frac)*(1/Ln2) + float64(exp)
 }
-- 
cgit v1.2.3