Add math.round.

2010-12-12 15:34:47 -06:00
parent c1579ef1da
commit 87cf842c28
1 changed files with 8 additions and 1 deletions
@@ -241,5 +241,12 @@ function pname(pn)
 	return ToEnumShortString(pn)
 end

+function math.round(num, pre)
+	if pre and pre < 0 then pre = 0 end
+	local mult = 10^(pre or 0) 
+	if num >= 0 then return math.floor(num*mult+.5)/mult 
+	else return math.ceil(num*mult-.5)/mult end
+end
+
 --[[ end helper functions ]]
-- this code is in the public domain.
+-- this code is in the public domain.