Programming interface to the Swiss Ephemeris - programmiastral.com

* get tidal acceleration used in swe_deltat() */
swe_get_tid_acc();
/* set tidal acceleration to be used in swe_deltat() */
swe_set_tid_acc();
Initialization, setup, and closing functions
/* set directory path of ephemeris files */
swe_set_ephe_path();
/* set name of JPL ephemeris file */
swe_set_jpl_file();
/* close Swiss Ephemeris */
swe_close();
House calculation
/* sidereal time */
swe_sidtime();
/* house cusps, ascendant, MC, armc, vertex */
swe_houses();
Auxiliary functions
/* coordinate transformation, from ecliptic to equator or vice -versa. */
swe_cotrans();
/* coordinate transformation of position and speed,
* from ecliptic to equator or vice-versa*/
swe_cotrans_sp();
/* get the name of a planet */
swe_get_planet_name();
/* normalization of any degree number to the range 0 ... 360 */
swe_degnorm();
Other functions that may be useful
PLACALC, the predecessor of SWISSEPH, included several functions that we do not need for SWISSEPH
anymore. Nevertheless we include them again in our DLL, because some users of our software may have taken
them over and use them in their applications. However, we gave them new names that were more consistent with
SWISSEPH.
PLACALC used angular measurements in centiseconds a lot; a centisecond is 1/100 of an arc second. The C type
CSEC or centisec is a 32-bit integer. CSEC was used because calculation with integer variables was considerably
faster than floating point calculation on most CPUs in 1988, when PLACALC was written.
In the Swiss Ephemeris we have dropped the use of centiseconds and use double (64-bit floating point) for all
angular measurements.
/* normalize argument into interval [0..DEG360]
* former function name: csnorm() */
swe_csnorm();