The spherical coordinates are longitude ($+$ve anticlockwise looking from the $+$ve latitude pole) and latitude. The Cartesian coordinates are right handed, with the x axis at zero longitude and latitude, and the z axis at the $+$ve latitude pole.

palDcs2c( double a, double b, double v[3] );

a = double (Given)

b = double (Given)

v = double [3] (Returned)

• Uses eraS2c(). See SOFA/ERFA documentation for details.