hsbt	2015-01-18 18:32:26 +0900 (Sun, 18 Jan 2015)

  New Revision: 49325

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=49325

  Log:
    * math.c (math_atan2): revive documentation before r49220.
      http://d.hatena.ne.jp/nagachika/20150112/ruby_trunk_changes_49213_49226

  Modified files:
    trunk/ChangeLog
    trunk/math.c
Index: math.c
===================================================================
--- math.c	(revision 49324)
+++ math.c	(revision 49325)
@@ -37,7 +37,9 @@ VALUE rb_eMathDomainError; https://github.com/ruby/ruby/blob/trunk/math.c#L37
  *  call-seq:
  *     Math.atan2(y, x)  -> Float
  *
- *  Returns a angle in radians between the positive x-axis of cartesian plane
+ *  Computes the arc tangent given +y+ and +x+.
+ *  Returns a Float in the range -PI..PI. Return value is a angle
+ *  in radians between the positive x-axis of cartesian plane
  *  and the point given by the coordinates (+x+, +y+) on it.
  *
  *  Domain: (-INFINITY, INFINITY)
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 49324)
+++ ChangeLog	(revision 49325)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Sun Jan 18 18:32:20 2015  SHIBATA Hiroshi  <shibata.hiroshi@g...>
+
+	* math.c (math_atan2): revive documentation before r49220.
+	  http://d.hatena.ne.jp/nagachika/20150112/ruby_trunk_changes_49213_49226
+
 Sun Jan 18 15:57:32 2015  Seiei Higa  <hanachin@g...>
 
 	* vm_method.c (check_definition): Module#public_method_defined?,

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