Lazy mpz allocation
nisse at lysator.liu.se
Mon Aug 31 20:13:46 UTC 2015
tg at gmplib.org (Torbjörn Granlund) writes:
> Unfortunately, the manual sayd "Initialize x, and set its value to 0."
> about mpz_init.
Sure, but we could do
static const mp_limb_t dummy_limb = 0xc0dedead;
void mpz_init (mpz_t x)
x->_mp_size = x->_mp_alloc = 0;
x->_mp_d = &dummy_limb;
It still represents the number zero, it's just that _mp_d points to a
dummy limb which happens to be far from zero.
Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26.
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