From: Jean Privat <jean@pryen.org>
Date: Sun, 29 May 2016 20:35:59 +0000 (-0400)
Subject: Merge: catalog: tweak documentation score
X-Git-Url: http://nitlanguage.org?hp=bd9979194f0ac741ce170a38d7256e13539651df

Merge: catalog: tweak documentation score

especially, private things, redefinitions and test_suites count for peanuts.

Pull-Request: #2138
Reviewed-by: Alexis Laferrière <alexis.laf@xymus.net>
---

diff --git a/lib/core/math.nit b/lib/core/math.nit
index 0f8325f..7b51e2a 100644
--- a/lib/core/math.nit
+++ b/lib/core/math.nit
@@ -169,6 +169,16 @@ redef class Int
 		end
 		return res
 	end
+
+	# Is `self` a power of two ?
+	#
+	# ~~~nit
+	# assert not 3.is_pow2
+	# assert 2.is_pow2
+	# assert 1.is_pow2
+	# assert not 0.is_pow2
+	# ~~~
+	fun is_pow2: Bool do return self != 0 and (self & self - 1) == 0
 end
 
 redef class Byte