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Add set symmetric difference

This commit is contained in:
Behdad Esfahbod 2012-05-25 13:48:00 -04:00
parent 27aba594c9
commit 62c3e111fc
3 changed files with 18 additions and 0 deletions
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5
src/hb-set-private.hh
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@ -102,6 +102,11 @@ struct _hb_set_t
for (unsigned int i = 0; i < ELTS; i++) for (unsigned int i = 0; i < ELTS; i++)
elts[i] &= ~other->elts[i]; elts[i] &= ~other->elts[i];
} }
inline void symmetric_difference (const hb_set_t *other)
{
for (unsigned int i = 0; i < ELTS; i++)
elts[i] ^= other->elts[i];
}
inline hb_codepoint_t get_min (void) const inline hb_codepoint_t get_min (void) const
{ {
for (unsigned int i = 0; i < ELTS; i++) for (unsigned int i = 0; i < ELTS; i++)

7
src/hb-set.cc
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@ -164,6 +164,13 @@ hb_set_subtract (hb_set_t *set,
set->subtract (other); set->subtract (other);
} }
void
hb_set_symmetric_difference (hb_set_t *set,
hb_set_t *other)
{
set->symmetric_difference (other);
}
hb_codepoint_t hb_codepoint_t
hb_set_min (hb_set_t *set) hb_set_min (hb_set_t *set)
{ {

6
src/hb-set.h
View File

@ -105,9 +105,15 @@ void
hb_set_subtract (hb_set_t *set, hb_set_subtract (hb_set_t *set,
hb_set_t *other); hb_set_t *other);
void
hb_set_symmetric_difference (hb_set_t *set,
hb_set_t *other);
/* Undefined if set empty */
hb_codepoint_t hb_codepoint_t
hb_set_min (hb_set_t *set); hb_set_min (hb_set_t *set);
/* Undefined if set empty */
hb_codepoint_t hb_codepoint_t
hb_set_max (hb_set_t *set); hb_set_max (hb_set_t *set);