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[set] Add page_t::elt_maybe_invert()

This commit is contained in:
Behdad Esfahbod 2021-08-15 11:39:31 -06:00
parent 9449cfeefd
commit c88e7ec935
1 changed files with 3 additions and 2 deletions
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5
src/hb-set.hh
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@ -190,7 +190,7 @@ struct hb_set_t
{
for (unsigned int i = 0; i < len (); i++)
{
elt_t e = inverted ? ~v[i] : v[i];
elt_t e = elt_maybe_invert (v[i], inverted);
if (e)
return i * ELT_BITS + elt_get_min (e);
}
@ -200,7 +200,7 @@ struct hb_set_t
{
for (int i = len () - 1; i >= 0; i--)
{
elt_t e = inverted ? ~v[i] : v[i];
elt_t e = elt_maybe_invert (v[i], inverted);
if (e)
return i * ELT_BITS + elt_get_max (e);
}
@ -213,6 +213,7 @@ struct hb_set_t
static unsigned int elt_get_min (const elt_t &elt) { return hb_ctz (elt); }
static unsigned int elt_get_max (const elt_t &elt) { return hb_bit_storage (elt) - 1; }
static elt_t elt_maybe_invert (elt_t elt, bool inverted) { return inverted ? ~elt : elt; }
typedef hb_vector_size_t<elt_t, PAGE_BITS / 8> vector_t;