From e9830964c415a4c6255780e5f046ccb7bcce6434 Mon Sep 17 00:00:00 2001
From: Kalev Lember <kalevlember@gmail.com>
Date: Tue, 10 Sep 2013 00:00:27 +0200
Subject: [PATCH 1/7] location-info: Add gclue_location_info_equal

https://bugs.freedesktop.org/show_bug.cgi?id=69105
---
 src/gclue-location-info.c | 27 +++++++++++++++++++++++++++
 src/gclue-location-info.h |  3 +++
 2 files changed, 30 insertions(+)

diff --git a/src/gclue-location-info.c b/src/gclue-location-info.c
index d372acf..49ea11c 100644
--- a/src/gclue-location-info.c
+++ b/src/gclue-location-info.c
@@ -26,6 +26,7 @@
 #include <math.h>
 
 #define EARTH_RADIUS_KM 6372.795
+#define EPSILON (1e-10)
 
 /**
  * SECTION:gclue-location
@@ -413,3 +414,29 @@ gclue_location_info_get_distance_from (GClueLocationInfo *loca,
         c = 2 * atan2 (sqrt (a), sqrt (1-a));
         return EARTH_RADIUS_KM * c;
 }
+
+/**
+ * gclue_location_info_equal:
+ * @loca: a #GClueLocationInfo
+ * @locb: a #GClueLocationInfo
+ *
+ * Compares two locations for equality, returning TRUE if they are equal.
+ *
+ * Returns: TRUE if the coordinates, accuracy, and description are equal
+ **/
+gboolean
+gclue_location_info_equal (GClueLocationInfo *loca,
+                           GClueLocationInfo *locb)
+{
+        gboolean ret;
+
+        g_return_val_if_fail (GCLUE_IS_LOCATION_INFO (loca), FALSE);
+        g_return_val_if_fail (GCLUE_IS_LOCATION_INFO (locb), FALSE);
+
+        ret = fabs (loca->priv->latitude - locb->priv->latitude) < EPSILON &&
+              fabs (loca->priv->longitude - locb->priv->longitude) < EPSILON &&
+              fabs (loca->priv->accuracy - locb->priv->accuracy) < EPSILON &&
+              g_strcmp0 (loca->priv->description, locb->priv->description) == 0;
+
+        return ret;
+}
diff --git a/src/gclue-location-info.h b/src/gclue-location-info.h
index e31266c..16e0453 100644
--- a/src/gclue-location-info.h
+++ b/src/gclue-location-info.h
@@ -82,6 +82,9 @@ GClueLocationInfo *gclue_location_info_new_with_description (gdouble     latitud
 double gclue_location_info_get_distance_from                (GClueLocationInfo *loca,
                                                              GClueLocationInfo *locb);
 
+gboolean gclue_location_info_equal                          (GClueLocationInfo *loca,
+                                                             GClueLocationInfo *locb);
+
 void gclue_location_info_set_description                    (GClueLocationInfo *loc,
                                                              const char    *description);
 
-- 
1.8.3.1