1 files changed, 58 insertions, 0 deletions
diff --git a/src/units.cpp b/src/units.cpp
new file mode 100644
index 00000000..50f11396
--- /dev/null
+++ b/src/units.cpp
@@ -0,0 +1,58 @@
+/* definition of standard cartesian units */
+
+#include <stddef.h>
+
+#include "proj.h"
+
+#define PJ_UNITS__
+#include "projects.h"
+
+/* Field 2 that contains the multiplier to convert named units to meters
+** may be expressed by either a simple floating point constant or a
+** numerator/denomenator values (e.g. 1/1000) */
+static const struct PJ_UNITS
+pj_units[] = {
+    {"km",      "1000",                 "Kilometer",                    1000.0},
+    {"m",       "1",                    "Meter",                        1.0},
+    {"dm",      "1/10",                 "Decimeter",                    0.1},
+    {"cm",      "1/100",                "Centimeter",                   0.01},
+    {"mm",      "1/1000",               "Millimeter",                   0.001},
+    {"kmi",     "1852",                 "International Nautical Mile",  1852.0},
+    {"in",      "0.0254",               "International Inch",           0.0254},
+    {"ft",      "0.3048",               "International Foot",           0.3048},
+    {"yd",      "0.9144",               "International Yard",           0.9144},
+    {"mi",      "1609.344",             "International Statute Mile",   1609.344},
+    {"fath",    "1.8288",               "International Fathom",         1.8288},
+    {"ch",      "20.1168",              "International Chain",          20.1168},
+    {"link",    "0.201168",             "International Link",           0.201168},
+    {"us-in",   "1/39.37",              "U.S. Surveyor's Inch",         100/3937.0},
+    {"us-ft",   "0.304800609601219",    "U.S. Surveyor's Foot",         1200/3937.0},
+    {"us-yd",   "0.914401828803658",    "U.S. Surveyor's Yard",         3600/3937.0},
+    {"us-ch",   "20.11684023368047",    "U.S. Surveyor's Chain",        79200/3937.0},
+    {"us-mi",   "1609.347218694437",    "U.S. Surveyor's Statute Mile", 6336000/3937.0},
+    {"ind-yd",  "0.91439523",           "Indian Yard",                  0.91439523},
+    {"ind-ft",  "0.30479841",           "Indian Foot",                  0.30479841},
+    {"ind-ch",  "20.11669506",          "Indian Chain",                 20.11669506},
+    {nullptr,      nullptr,                   nullptr,                           0.0}
+};
+
+const PJ_UNITS *proj_list_units()
+{
+    return pj_units;
+}
+
+/* M_PI / 200 */
+#define GRAD_TO_RAD 0.015707963267948967
+
+const struct PJ_UNITS
+pj_angular_units[] = {
+    {"rad",         "1.0",                   "Radian", 1.0},
+    {"deg",         "0.017453292519943296",  "Degree", DEG_TO_RAD},
+    {"grad",        "0.015707963267948967",  "Grad",   GRAD_TO_RAD},
+    {nullptr,          nullptr,                     nullptr,    0.0}
+};
+
+const PJ_UNITS *proj_list_angular_units()
+{
+    return pj_angular_units;
+}