Function secp256k1zkp::ffi::secp256k1_aggsig_partial_sign

pub unsafe extern "C" fn secp256k1_aggsig_partial_sign(
    cx: *const Context, 
    aggctx: *mut AggSigContext, 
    sig: *mut AggSigPartialSignature, 
    msghash32: *const c_uchar, 
    seckey32: *const c_uchar, 
    index: size_t
) -> c_int