Function spice_sys::srfnrm_c

pub unsafe extern "C" fn srfnrm_c(
    method: *const c_char, 
    target: *const c_char, 
    et: c_double, 
    fixref: *const c_char, 
    npts: c_int, 
    srfpts: *const *const c_double, 
    normls: *mut *mut c_double
)

maps an array of surface points on a body, modeled as an ellipsoid or a digital shape (DSK), to the corresponding outward surface normal vectors.