Function CalcWrappedAzDiffs 

pub unsafe extern "C" fn CalcWrappedAzDiffs(
    dpsi: *mut *mut f32,
    avgdpsi: *mut *mut f32,
    wrappedphase: *mut *mut f32,
    kperpdpsi: c_long,
    kpardpsi: c_long,
    nrow: c_long,
    ncol: c_long,
) -> c_int

Computes an array of wrapped phase differences in range (across rows). Input wrapped phase array should be in radians. Output is in cycles.