28 Feb 1900 reprise

[Neil Booth <neil daikokuya demon co uk>]

My previous patch omitted to update the reverse function.  I've built
and tested this patch.  It gives 28 as the day of dates 59 and 60
as required.

[The reason behind this patch is that typing in 28Feb1900 into
Gnumeric does not give the same number as doing that in Excel].

Neil.

2002-01-13  Neil Booth  <neil daikokuya demon co uk>

        * datetime.c (date_serial_19000228): Should be 59.
        (datetime_serial_to_g): Update accordingly.

Index: datetime.c
===================================================================
RCS file: /cvs/gnome/gnumeric/src/datetime.c,v
retrieving revision 1.15
diff -u -p -r1.15 datetime.c
--- datetime.c  2002/01/10 06:40:20     1.15
+++ datetime.c  2002/01/13 15:23:28
@@ -27,7 +27,7 @@ static int date_origin = 0;
  * The serial number of 19000228.  Excel allocates a serial number for
  * the non-existing date 19000229.
  */
-static const int date_serial_19000228 = 58;
+static const int date_serial_19000228 = 59;
 
 static void
 date_init (void)
@@ -62,11 +62,9 @@ datetime_serial_to_g (int serial)
 
        if (serial <= date_serial_19000228)
                return g_date_new_julian (serial + date_origin);
-       else if (serial == date_serial_19000228 + 1) {
+       else if (serial == date_serial_19000228 + 1)
                g_warning ("Request for date 19000229.");
-               return g_date_new_julian (serial + date_origin);
-       } else
-               return g_date_new_julian (serial + date_origin - 1);
+       return g_date_new_julian (serial + date_origin - 1);
 }