Function BN_mod_exp2_mont

pub unsafe extern "C" fn BN_mod_exp2_mont(
    r: *mut bignum_st,
    a1: *const bignum_st,
    p1: *const bignum_st,
    a2: *const bignum_st,
    p2: *const bignum_st,
    m: *const bignum_st,
    ctx: *mut bignum_ctx,
    m_ctx: *mut bn_mont_ctx_st,
) -> i32