From c9ac35f3bae25c296df787d14a0d532430ee9ee5 Mon Sep 17 00:00:00 2001
From: wanabe <s.wanabe@gmail.com>
Date: Mon, 19 Aug 2013 01:34:07 +0900
Subject: android doesn't have log2

---
 mrbgems/mruby-math/src/math.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'mrbgems/mruby-math/src/math.c')

diff --git a/mrbgems/mruby-math/src/math.c b/mrbgems/mruby-math/src/math.c
index bdc7767f7..4960de6dd 100644
--- a/mrbgems/mruby-math/src/math.c
+++ b/mrbgems/mruby-math/src/math.c
@@ -87,6 +87,10 @@ erfc(double x)
   return one_sqrtpi*exp(-x*x)*q2;
 }
 
+#endif
+
+#if (defined _MSC_VER && _MSC_VER < 1800) || defined __ANDROID__
+
 double
 log2(double x)
 {
-- 
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