* monday = 0, ... sunday = 6 */

distance in centisecs p1 - p2 normalized to [-180..180[ **************************************/

distance in centisecs p1 - p2 normalized to [0..360[ **************************************/

* get fixstar magnitude * parameters: * star name of star or line number in star file * (start from 1, don't count comment). * If no error

function finds the gauquelin sector position of a planet or fixed star * * if starname != NULL then a star is computed. * iflag: use the flags

function for inhouse testing only */

* compute a planets heliocentric crossing over some longitude * returns juldate of the next crossing, with jd > jd_et if dir >= 0, * or the previous

* compute a planets heliocentric crossing over some longitude * returns juldate of the next crossing, with jd > jd_ut if dir >= 0, * or the previous

housasp.c * cusps are returned in double cusp[13], * or cusp[37] with house system 'G'. * cusp[1...12] houses 1 - 12

For explanation see function swe_houses_armc_ex2() below.

For explanation see function swe_houses_ex2() below.

* Input: tjd_ut Julian day number, universal time (UT1). * gregfalg Calendar flag * Output: UTC year, month, day, hour, minute, second

When is the next lunar eclipse, observable at a geographic position? * * retflag SE_ECL_TOTAL or SE_ECL_PENUMBRAL or SE_ECL_PARTIAL * * tret[0

When is the next lunar occultation anywhere on earth? * This function also finds solar eclipses, but is less efficient * than swe_sol_eclipse_when

When is the next solar eclipse at a given geographical position? * Note the uncertainty of Delta T for the remote past and for * the future. *

double tjd_ut, time, Jul. day UT int32 ipl, planet number char* starname, star name, must be NULL or "" if not a star

* compute Moon's crossing over some longitude * flag covers the following bits as used by swe_calc(): SEFLG_TRUEPOS 0 = apparent positions, 1

* compute next Moon crossing over node, by finding zero latitude crossing * returns juldate of the next crossing, with jd > jd_et * The returned tim

* compute next Moon crossing over node in UT, by finding zero latitude crossing * returns juldate of the next crossing, with jd > jd_ut * The return

* compute Moon's crossing over some longitude * flag covers the following bits as used by swe_calc_ut(): SEFLG_TRUEPOS 0 = apparent positions, 1

This function calculates calculates the maximum possible distance, the * minimum possible distance, and the current true distance of planet, the EMB

sets jpl file name. * also calls swe_close(). this makes sure that swe_calc() * won't return planet positions previously computed from other * ephe

Computes attributes of a solar eclipse for given tjd, geo. longitude, * geo. latitude, and geo. height. * * retflag SE_ECL_TOTAL or SE_ECL_ANN

When is the next solar eclipse anywhere on earth? * * input parameters: * * tjd_start start time for search (UT) * ifl ephemeris to be u

When is the next solar eclipse at a given geographical position? * Note the uncertainty of Delta T for the remote past and for * the future. *

Computes geographic location and type of solar eclipse * for a given tjd * iflag: to indicate ephemeris to be used * (SEFLG_JPLEPH, SEFLG_SW

* compute Sun'scrossing over some longitude * flag covers the following bits as used by swe_calc(): SEFLG_HELCTR 0 = geocentric, SUN, 1 = helioc

* compute Sun'scrossing over some longitude, in UT * flag covers the following bits as used by swe_calc(): SEFLG_HELCTR 0 = geocentric, SUN, 1 =

* splitting decimal degrees into (zod.sign,) deg, min, sec. * * input: * ddeg decimal degrees, ecliptic longitude * roundflag by default the

transform local time to UTC or UTC to local time * * input * iyear ... dsec date and time * d_timezone timezone offset * output