230 int sphx2s(
const double eul[5], 
int nphi, 
int ntheta, 
int spt, 
int sxy,
 
  231            const double phi[], 
const double theta[],
 
  232            double lng[], 
double lat[]);
 
  234 int sphs2x(
const double eul[5], 
int nlng, 
int nlat, 
int sll , 
int spt,
 
  235            const double lng[], 
const double lat[],
 
  236            double phi[], 
double theta[]);
 
  238 int sphdpa(
int nfield, 
double lng0, 
double lat0,
 
  239            const double lng[], 
const double lat[],
 
  240            double dist[], 
double pa[]);
 
  242 int sphpad(
int nfield, 
double lng0, 
double lat0,
 
  243            const double dist[], 
const double pa[],
 
  244            double lng[], 
double lat[]);
 
int sphdpa(int nfield, double lng0, double lat0, const double lng[], const double lat[], double dist[], double pa[])
Compute angular distance and position angle. 
int sphx2s(const double eul[5], int nphi, int ntheta, int spt, int sxy, const double phi[], const double theta[], double lng[], double lat[])
Rotation in the pixel-to-world direction. 
int sphs2x(const double eul[5], int nlng, int nlat, int sll, int spt, const double lng[], const double lat[], double phi[], double theta[])
Rotation in the world-to-pixel direction. 
int sphpad(int nfield, double lng0, double lat0, const double dist[], const double pa[], double lng[], double lat[])
Compute field points offset from a given point.