From 6afd231a14c4fdb244a38f3e0637c93671e90ba9 Mon Sep 17 00:00:00 2001
From: Charles Haley <cbhaley@i.wont.say.com>
Date: Sat, 12 Oct 2013 18:36:18 +0200
Subject: [PATCH] Fix formatter function days_between to compute the right
 value when the answer is negative.

---
 src/calibre/utils/formatter_functions.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/utils/formatter_functions.py b/src/calibre/utils/formatter_functions.py
index b8ff7b0387..2d0106c59a 100644
--- a/src/calibre/utils/formatter_functions.py
+++ b/src/calibre/utils/formatter_functions.py
@@ -1187,7 +1187,7 @@ class BuiltinDaysBetween(BuiltinFormatterFunction):
         except:
             return ''
         i = d1 - d2
-        return str('%d.%d'%(i.days, i.seconds/8640))
+        return '%.1f'%(i.days + (i.seconds/(24.0*60.0*60.0)))
 
 class BuiltinLanguageStrings(BuiltinFormatterFunction):
     name = 'language_strings'