Ciao,
Il Mer, 29 Aprile 2015 10:49 am, t...@gmplib.org ha scritto:
> ni...@lysator.liu.se (Niels Möller) writes:
mp_limb_t
mpn_neg (mp_ptr rp, mp_srcptr up, mp_size_t n)
{
/* Low zero limbs are unchanged by negation. */
while (*up == 0)
{
*rp = 0;
if (!--n)
/* All zero */
return 0;
++up; ++rp;
}
/* First non-zero limb is negated. */
*rp = - *up;
/* Higher limbs get complemented. */
if (--n)
mpn_com (++rp, ++up, n);
return 1;
}
Looks much better than mine!
(I micro-optimised increments, moving them after the possibly returning
branches)
Regards,
m
--
http://bodrato.it/
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