AP_Math: move locations_are_same to Location and rename to same_latlon_as

libraries/AP_Common/Location.cpp

@@ -308,3 +308,11 @@ int32_t Location::get_bearing_to(const struct Location &loc2) const
     }
     return bearing;
 }
+
+/*
+  return true if lat and lng match. Ignores altitude and options
+ */
+bool Location::same_latlon_as(const Location &loc2) const
+{
+    return (lat == loc2.lat) && (lng == loc2.lng);
+}

libraries/AP_Common/Location.h

@@ -94,6 +94,9 @@ public:
     // return bearing in centi-degrees from location to loc2
     int32_t get_bearing_to(const struct Location &loc2) const;
 
+    // check if lat and lng match. Ignore altitude and options
+    bool same_latlon_as(const Location &loc2) const;
+
     /*
      * convert invalid waypoint with useful data. return true if location changed
      */

libraries/AP_Math/location.cpp

@@ -88,12 +88,6 @@ Vector3f location_3d_diff_NED(const struct Location &loc1, const struct Location
                     (loc1.alt - loc2.alt) * 0.01f);
 }
 
-/*
-  return true if lat and lng match. Ignores altitude and options
- */
-bool locations_are_same(const struct Location &loc1, const struct Location &loc2) {
-    return (loc1.lat == loc2.lat) && (loc1.lng == loc2.lng);
-}
 
 // return true when lat and lng are within range
 bool check_lat(float lat)

libraries/AP_Math/location.h

@@ -48,10 +48,6 @@ float       location_path_proportion(const struct Location &location,
  */
 Vector3f    location_3d_diff_NED(const struct Location &loc1, const struct Location &loc2);
 
-/*
- * check if lat and lng match. Ignore altitude and options
- */
-bool        locations_are_same(const struct Location &loc1, const struct Location &loc2);
 
 // Converts from WGS84 geodetic coordinates (lat, lon, height)
 // into WGS84 Earth Centered, Earth Fixed (ECEF) coordinates