From 6e152dd5c0786a650aed8f0c09babdc93895bff1 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Thu, 5 Jun 2014 17:10:28 -0700 Subject: altos: Add ao_distance.c to compute cartesian distances on the globe This is not a great circle distance, but should be good enough for points reasonably close together Signed-off-by: Keith Packard --- src/kernel/ao_distance.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 src/kernel/ao_distance.h (limited to 'src/kernel/ao_distance.h') diff --git a/src/kernel/ao_distance.h b/src/kernel/ao_distance.h new file mode 100644 index 00000000..6762434e --- /dev/null +++ b/src/kernel/ao_distance.h @@ -0,0 +1,25 @@ +/* + * Copyright © 2014 Keith Packard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#ifndef _AO_DISTANCE_H_ +#define _AO_DISTANCE_H_ +#include + +uint32_t +ao_distance(int32_t lat_a, int32_t lon_a, int32_t lat_b, int32_t lon_b); + +#endif /* _AO_DISTANCE_H_ */ -- cgit v1.2.3