From cea341c690955299b0cd52f301ea25244db76ab7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8B=A5=E5=B1=B1=E5=8F=B2=E9=83=8E?=
 <shirou@wakayamashirou-no-MacBook-Pro.local>
Date: Thu, 26 Feb 2015 16:23:35 +0900
Subject: [PATCH] mem: add 0 check to darwin.swapmem.

---
 mem/mem_darwin.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mem/mem_darwin.go b/mem/mem_darwin.go
index a454894a..6f901d25 100644
--- a/mem/mem_darwin.go
+++ b/mem/mem_darwin.go
@@ -92,7 +92,10 @@ func SwapMemory() (*SwapMemoryStat, error) {
 		return nil, err
 	}
 
-	u := ((total_v - free_v) / total_v) * 100.0
+	u := float64(0)
+	if total_v != 0 {
+		u = ((total_v - free_v) / total_v) * 100.0
+	}
 
 	// vm.swapusage shows "M", multiply 1000
 	ret = &SwapMemoryStat{