palEqecl palEqecl - Transform from J2000.0 equatorial coordinates to ecliptic coordinates

Description:
Transform from J2000.0 equatorial coordinates to ecliptic coordinates.

Invocation:
void palEqecl( double dr, double dd, double date, double $*$dl, double $*$db);

Arguments:

dr = double (Given)
J2000.0 mean RA (radians)
dd = double (Given)
J2000.0 mean Dec (Radians)
date = double (Given)
TT as Modified Julian Date (JD-2400000.5). The difference between TT and TDB is of the order of a millisecond or two (i.e. about 0.02 arc-seconds).
dl = double $*$ (Returned)
Ecliptic longitude (mean of date, IAU 1980 theory, radians)
db = double $*$ (Returned)
Ecliptic latitude (mean of date, IAU 1980 theory, radians)