/* definition of standard cartesian units */

#include <stddef.h>

#include "proj.h"

#define PJ_UNITS__
#include "proj_internal.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;
}
