1 files changed, 39 insertions, 0 deletions
diff --git a/tests/test_geoid.c b/tests/test_geoid.c
new file mode 100644
index 00000000..cd2213c8
--- /dev/null
+++ b/tests/test_geoid.c
@@ -0,0 +1,39 @@
+/* test driver for the ECEF to WGS84 conversions in geoid.c
+ *
+ * This file is Copyright (c) 2010 by the GPSD project
+ * SPDX-License-Identifier: BSD-2-clause
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "../gpsd.h"
+
+int main(int argc, char **argv)
+{
+    double lat, lon;
+
+    if (argc != 3) {
+	(void)fprintf(stderr, "Usage: %s lat lon\n", argv[0]);
+	return 1;
+    }
+
+    lat = atof(argv[1]);
+    lon = atof(argv[2]);
+
+    if (lon > 180.0 || lat < -180.0) {
+	(void)fprintf(stderr, " -180 <= lon=%s(%.f) <= 180 ?\n", argv[2], lon);
+	return 1;
+    }
+
+    if (lat > 90.0 || lat < -90.0) {
+	(void)fprintf(stderr, " -90 <= lat=%s(%.f) <= 90 ?\n", argv[1], lat);
+	return 1;
+    }
+
+    (void)printf(" lat= %f lon= %f geoid correction= %f\n",
+                 lat, lon, wgs84_separation(lat, lon));
+
+    return 0;
+}