for the function=20 mp_size_t=20 mpn_pow_1(mp_ptr rp, mp_srcptr bp, mp_size_t bn, mp_limb_t exp, mp_ptr tp= ) how much space is required at rp ?=20 clearly it needs enough space for the result , but does it need any extra= =20 limbs? how much space is required at tp ? which I assume is a temporary varible thanks jason