From 3465856922deedc246eed120b812fa07923491f2 Mon Sep 17 00:00:00 2001
From: mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 19 May 2009 14:00:04 +0000
Subject: [PATCH] * time.c (time_minus): always return a Float. 
 [ruby-dev:38446]

* time.c (time_to_r): new method.  [ruby-dev:38461]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23490 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog |  6 ++++++
 time.c    | 27 ++++++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 346a19f905..c70afc3098 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Tue May 19 22:54:35 2009  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* time.c (time_minus): always return a Float.  [ruby-dev:38446]
+
+	* time.c (time_to_r): new method.  [ruby-dev:38461]
+
 Tue May 19 13:59:35 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* class.c (clone_method): add cast to remove warning from
diff --git a/time.c b/time.c
index 3f8282589f..7fcb7f40ab 100644
--- a/time.c
+++ b/time.c
@@ -2275,6 +2275,30 @@ time_to_f(VALUE time)
     return rb_Float(tobj->timev);
 }
 
+/*
+ *  call-seq:
+ *     time.to_r => Rational
+ *
+ *  Returns the value of <i>time</i> as a rational number of seconds
+ *  since the Epoch.
+ *
+ *     t = Time.now
+ *     p t.to_r            #=> (8807170717088293/8388608)
+ *
+ *  This methods is intended to be used to get an accurate value
+ *  representing nanoseconds from the Epoch.  You can use this
+ *  to convert time to another Epoch.
+ */
+
+static VALUE
+time_to_r(VALUE time)
+{
+    struct time_object *tobj;
+
+    GetTimeval(time, tobj);
+    return tobj->timev;
+}
+
 /*
  *  call-seq:
  *     time.usec    => int
@@ -2803,7 +2827,7 @@ time_minus(VALUE time1, VALUE time2)
 	struct time_object *tobj2;
 
 	GetTimeval(time2, tobj2);
-        return sub(tobj->timev, tobj2->timev);
+        return rb_Float(sub(tobj->timev, tobj2->timev));
     }
     return time_add(tobj, time2, -1);
 }
@@ -3682,6 +3706,7 @@ Init_Time(void)
 
     rb_define_method(rb_cTime, "to_i", time_to_i, 0);
     rb_define_method(rb_cTime, "to_f", time_to_f, 0);
+    rb_define_method(rb_cTime, "to_r", time_to_r, 0);
     rb_define_method(rb_cTime, "<=>", time_cmp, 1);
     rb_define_method(rb_cTime, "eql?", time_eql, 1);
     rb_define_method(rb_cTime, "hash", time_hash, 0);