Fix bug in arctangent
diff --git a/lib/lib.bc b/lib/lib.bc
index 92a5742..db40206 100644
--- a/lib/lib.bc
+++ b/lib/lib.bc
@@ -147,7 +147,7 @@
 		scale+=5
 		a=a(.267)
 	}
-	scale=s+3
+	scale=s+5
 	while(x>.267){
 		m+=1
 		x=(x-.267)/(1+.267*x)