Function nginx::BN_mod_mul_reciprocal

pub unsafe extern "C" fn BN_mod_mul_reciprocal(
    r: *mut BIGNUM, 
    x: *const BIGNUM, 
    y: *const BIGNUM, 
    recp: *mut BN_RECP_CTX, 
    ctx: *mut BN_CTX
) -> c_int