Function decFK4toFK5Radians( raFK4, decFK4, bepoch )

Description:
Converts a B1950.0 FK4 position to J2000.0 FK5 yielding Declination. This assumes zero proper motion in the FK5 frame. The bepoch parameter is the epoch at which the position in the FK4 frame was determined.
Parameters:
raFK4 (floating point)
right ascension in B1950.0 FK4 system (radians)
decFK4 (floating point)
declination in B1950.0 FK4 system (radians)
bepoch (floating point)
Besselian epoch
Return Value (floating point):
declination in J2000.0 FK5 system (radians)
Signature:
double decFK4toFK5Radians(double, double, double)