From 1a876fb61ea9c64553a80f4d4683c8b675eca054 Mon Sep 17 00:00:00 2001
From: tadf <tadf@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 30 Jun 2011 12:17:52 +0000
Subject: [PATCH] 	* ext/date/date_core.c (m_ajd): refers a constant.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32332 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog            | 4 ++++
 ext/date/date_core.c | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index d383aaafbb..916ea54569 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jun 30 21:16:04 2011  Tadayoshi Funaba  <tadf@dotrb.org>
+
+	* ext/date/date_core.c (m_ajd): refers a constant.
+
 Thu Jun 30 20:54:25 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	  * ext/io/console/io-console.gemspec: spin-off gem for 1.9.2.
diff --git a/ext/date/date_core.c b/ext/date/date_core.c
index a18365eb21..66d980fcf4 100644
--- a/ext/date/date_core.c
+++ b/ext/date/date_core.c
@@ -1481,6 +1481,8 @@ m_fr(union DateData *x)
     }
 }
 
+#define HALF_DAYS_IN_SECONDS (DAY_IN_SECONDS / 2)
+
 static VALUE
 m_ajd(union DateData *x)
 {
@@ -1495,7 +1497,7 @@ m_ajd(union DateData *x)
 
     r = m_real_jd(x);
     df = m_df(x);
-    df -= 43200; /* 12 hours */
+    df -= HALF_DAYS_IN_SECONDS;
     if (df)
 	r = f_add(r, isec_to_day(df));
     sf = m_sf(x);