//
// Written by Curtis Olson, started February 2000.
//
-// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
#include <simgear/compiler.h>
+#ifdef _MSC_VER
+# define _USE_MATH_DEFINES
+#endif
#ifdef SG_HAVE_STD_INCLUDES
# include <cmath>
#else
#define SG_METER_TO_FEET 3.28083989501312335958
/** Meters to Nautical Miles. 1 nm = 6076.11549 feet */
-#define SG_METER_TO_NM 0.00053995680
+#define SG_METER_TO_NM 0.0005399568034557235
/** Nautical Miles to Meters */
#define SG_NM_TO_METER 1852.0000
+/** Meters to Statute Miles. */
+#define SG_METER_TO_SM 0.0006213699494949496
+
+/** Statute Miles to Meters. */
+#define SG_SM_TO_METER 1609.3412196
+
/** Radians to Nautical Miles. 1 nm = 1/60 of a degree */
#define SG_NM_TO_RAD 0.00029088820866572159
/** Nautical Miles to Radians */
#define SG_RAD_TO_NM 3437.7467707849392526
+/** Miles per second to Knots */
+#define SG_MPS_TO_KT 1.9438444924406046432
+
+/** Knots to Miles per second */
+#define SG_KT_TO_MPS 0.5144444444444444444
+
+/** Miles per second to Miles per hour */
+#define SG_MPS_TO_MPH 2.2369362920544020312
+
+/** Miles per hour to Miles per second */
+#define SG_MPH_TO_MPS 0.44704
+
+/** Meters per second to Kilometers per hour */
+#define SG_MPS_TO_KMH 3.6
+
+/** Kilometers per hour to Miles per second */
+#define SG_KMH_TO_MPS 0.2777777777777777778
+
+/** Pascal to Inch Mercury */
+#define SG_PA_TO_INHG 0.0002952998330101010
+
+/** Inch Mercury to Pascal */
+#define SG_INHG_TO_PA 3386.388640341
+
+
/** For divide by zero avoidance, this will be close enough to zero */
#define SG_EPSILON 0.0000001
-
/** Highest binobj format version we know how to read/write. This starts at
* 0 and can go up to 65535 */
#define SG_BINOBJ_VERSION 6