1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215

pub const JPL_EPHEM_START_JD: u32 = 0;
pub const JPL_EPHEM_END_JD: u32 = 8;
pub const JPL_EPHEM_STEP: u32 = 16;
pub const JPL_EPHEM_N_CONSTANTS: u32 = 24;
pub const JPL_EPHEM_AU_IN_KM: u32 = 28;
pub const JPL_EPHEM_EARTH_MOON_RATIO: u32 = 36;
pub const JPL_EPHEM_IPT_ARRAY: u32 = 44;
pub const JPL_EPHEM_EPHEMERIS_VERSION: u32 = 224;
pub const JPL_EPHEM_KERNEL_SIZE: u32 = 228;
pub const JPL_EPHEM_KERNEL_RECORD_SIZE: u32 = 232;
pub const JPL_EPHEM_KERNEL_NCOEFF: u32 = 236;
pub const JPL_EPHEM_KERNEL_SWAP_BYTES: u32 = 240;
pub const JPL_EPH_OUTSIDE_RANGE: i32 = -1;
pub const JPL_EPH_READ_ERROR: i32 = -2;
pub const JPL_EPH_QUANTITY_NOT_IN_EPHEMERIS: i32 = -3;
pub const JPL_EPH_INVALID_INDEX: i32 = -5;
pub const JPL_EPH_FSEEK_ERROR: i32 = -6;
pub const JPL_INIT_NO_ERROR: u32 = 0;
pub const JPL_INIT_FILE_NOT_FOUND: i32 = -1;
pub const JPL_INIT_FSEEK_FAILED: i32 = -2;
pub const JPL_INIT_FREAD_FAILED: i32 = -3;
pub const JPL_INIT_FREAD2_FAILED: i32 = -4;
pub const JPL_INIT_FREAD5_FAILED: i32 = -10;
pub const JPL_INIT_FILE_CORRUPT: i32 = -5;
pub const JPL_INIT_MEMORY_FAILURE: i32 = -6;
pub const JPL_INIT_FREAD3_FAILED: i32 = -7;
pub const JPL_INIT_FREAD4_FAILED: i32 = -8;
pub const JPL_INIT_NOT_CALLED: i32 = -9;

extern "C" {
    /// ```text
    /// this function does the initial prep work for use of binary JPL
    /// ephemerides.
    ///   const char *ephemeris_filename = full path/filename of the binary
    ///       ephemeris (on the Willmann-Bell CDs,  this is UNIX.200, 405,
    ///       or 406)
    ///   char nam[][6] = array of constant names (max 6 characters each)
    ///       You can pass nam=NULL if you don't care about the names
    ///   double *val = array of values of constants
    ///       You can pass val=NULL if you don't care about the constants
    ///   Return value is a pointer to the jpl_eph_data structure
    ///   NULL is returned if the file isn't opened or memory isn't alloced
    ///   Errors can be determined with the above jpl_init_error_code( )
    /// ```
    pub fn jpl_init_ephemeris(
        ephemeris_filename: *const ::std::os::raw::c_char,
        nam: *mut [::std::os::raw::c_char; 6usize],
        val: *mut f64,
    ) -> *mut ::std::os::raw::c_void;

    /// ```text
    /// this function closes files and frees up memory allocated by the
    /// jpl_init_ephemeris( ) function.
    /// ```
    pub fn jpl_close_ephemeris(ephem: *mut ::std::os::raw::c_void);

    /// ```text
    /// This subroutine reads and interpolates the jpl planetary ephemeris file
    ///
    ///    Calling sequence parameters:
    ///
    ///    Input:
    ///
    ///        et2[] double, 2-element JED epoch at which interpolation
    ///              is wanted.  Any combination of et2[0]+et2[1] which falls
    ///              within the time span on the file is a permissible epoch.
    ///
    ///               a. for ease in programming, the user may put the
    ///                  entire epoch in et2[0] and set et2[1]=0.0
    ///
    ///               b. for maximum interpolation accuracy, set et2[0] =
    ///                  the most recent midnight at or before interpolation
    ///                  epoch and set et2[1] = fractional part of a day
    ///                  elapsed between et2[0] and epoch.
    ///
    ///               c. as an alternative, it may prove convenient to set
    ///                  et2[0] = some fixed epoch, such as start of integration,
    ///                  and et2[1] = elapsed interval between then and epoch.
    ///
    ///       list   13-element integer array specifying what interpolation
    ///              is wanted for each of the "bodies" on the file.
    ///
    ///                        list[i]=0, no interpolation for body i
    ///                               =1, position only
    ///                               =2, position and velocity
    ///
    ///              the designation of the astronomical bodies by i is:
    ///
    ///                        i = 0: mercury
    ///                          = 1: venus
    ///                          = 2: earth-moon barycenter
    ///                          = 3: mars
    ///                          = 4: jupiter
    ///                          = 5: saturn
    ///                          = 6: uranus
    ///                          = 7: neptune
    ///                          = 8: pluto
    ///                          = 9: geocentric moon
    ///                          =10: nutations in lon & obliq (if on file)
    ///                          =11: lunar librations (if on file)
    ///                          =12: lunar mantle omegas
    ///                          =13: TT-TDB (if on file)
    ///
    /// Note that I've not actually seen case 12 yet.  It probably doesn't work.
    ///
    ///    output:
    ///
    ///    pv[][6]   double array that will contain requested interpolated
    ///              quantities.  The body specified by list[i] will have its
    ///              state in the array starting at pv[i][0]  (on any given
    ///              call, only those words in 'pv' which are affected by the
    ///              first 10 'list' entries (and by list(11) if librations are
    ///              on the file) are set.  The rest of the 'pv' array
    ///              is untouched.)  The order of components in pv[][] is:
    ///              pv[][0]=x,....pv[][5]=dz.
    ///
    ///              All output vectors are referenced to the earth mean
    ///              equator and equinox of epoch. The moon state is always
    ///              geocentric; the other nine states are either heliocentric
    ///              or solar-system barycentric, depending on the setting of
    ///              global variables (see below).
    ///
    ///              Lunar librations, if on file, are put into pv[10][k] if
    ///              list[11] is 1 or 2.
    ///
    ///        nut   dp 4-word array that will contain nutations and rates,
    ///              depending on the setting of list[10].  the order of
    ///              quantities in nut is:
    ///
    ///                       d psi  (nutation in longitude)
    ///                       d epsilon (nutation in obliquity)
    ///                       d psi dot
    ///                       d epsilon dot
    /// ```
    pub fn jpl_state(
        ephem: *mut ::std::os::raw::c_void,
        et: f64,
        list: *const ::std::os::raw::c_int,
        pv: *mut [f64; 6usize],
        nut: *mut f64,
        bary: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;

    /// ```text
    /// This subroutine reads the jpl planetary ephemeris
    /// and gives the position and velocity of the point 'ntarg'
    /// with respect to 'ncent'.
    ///
    /// Calling sequence parameters:
    ///
    ///   et = (double) julian ephemeris date at which interpolation
    ///        is wanted.
    ///
    /// ntarg = integer number of 'target' point.
    ///
    /// ncent = integer number of center point.
    ///
    /// The numbering convention for 'ntarg' and 'ncent' is:
    ///
    ///         1 = mercury           8 = neptune
    ///         2 = venus             9 = pluto
    ///         3 = earth            10 = moon
    ///         4 = mars             11 = sun
    ///         5 = jupiter          12 = solar-system barycenter
    ///         6 = saturn           13 = earth-moon barycenter
    ///         7 = uranus           14 = nutations (longitude and obliq)
    ///                              15 = librations, if on eph. file
    ///                              16 = lunar mantle omega_x,omega_y,omega_z
    ///                              17 = TT-TDB, if on eph. file
    ///
    ///         (If nutations are wanted, set ntarg = 14.
    ///          For librations, set ntarg = 15. set ncent= 0.
    ///          For TT-TDB,  set ntarg = 17.  I've not actually
    ///          seen an ntarg = 16 case yet.)
    ///
    ///  rrd = output 6-element, double array of position and velocity
    ///        of point 'ntarg' relative to 'ncent'. The units are au and
    ///        au/day. For librations the units are radians and radians
    ///        per day. In the case of nutations the first four words of
    ///        rrd will be set to nutations and rates, having units of
    ///        radians and radians/day.
    ///
    ///        The option is available to have the units in km and km/sec.
    ///        for this, set km=TRUE at the beginning of the program.
    ///
    ///  calc_velocity = integer flag;  if nonzero,  velocities will be
    ///        computed,  otherwise not.
    /// ```
    pub fn jpl_pleph(
        ephem: *mut ::std::os::raw::c_void,
        et: f64,
        ntarg: ::std::os::raw::c_int,
        ncent: ::std::os::raw::c_int,
        rrd: *mut f64,
        calc_velocity: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_int;

    pub fn jpl_get_double(
        ephem: *const ::std::os::raw::c_void,
        value: ::std::os::raw::c_int,
    ) -> f64;

    pub fn jpl_get_long(
        ephem: *const ::std::os::raw::c_void,
        value: ::std::os::raw::c_int,
    ) -> ::std::os::raw::c_long;

    pub fn jpl_get_constant(
        idx: ::std::os::raw::c_int,
        ephem: *mut ::std::os::raw::c_void,
        constant_name: *mut ::std::os::raw::c_char,
    ) -> f64;

    pub fn jpl_init_error_code() -> ::std::os::raw::c_int;
}