From: Lucas Bajolet <r4pass@hotmail.com>
Date: Mon, 22 Sep 2014 15:31:29 +0000 (-0400)
Subject: lib/standard/math: Added function is_even to Int
X-Git-Tag: v0.6.9~23^2~1
X-Git-Url: http://nitlanguage.org

lib/standard/math: Added function is_even to Int

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
---

diff --git a/lib/standard/math.nit b/lib/standard/math.nit
index 7db6fa3..ba4db63 100644
--- a/lib/standard/math.nit
+++ b/lib/standard/math.nit
@@ -51,6 +51,16 @@ redef class Int
 		if self > o then return (self - o).rshift(1).gcd(o)
 		return (o - self).rshift(1).gcd(self)
 	end
+
+	# Is `self` even ?
+	#
+	#    assert 12.is_even
+	fun is_even: Bool do return self % 2 == 0
+
+	# Is `self` odd ?
+	#
+	#    assert not 13.is_even
+	fun is_odd: Bool do return not is_even
 end
 
 redef class Float