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[iter] Minor

This commit is contained in:
Behdad Esfahbod 2019-05-09 11:25:02 -07:00
parent 57d545932f
commit 12dd56f857
1 changed files with 4 additions and 2 deletions
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6
src/hb-iter.hh
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@ -531,7 +531,7 @@ template <typename T, typename S>
struct hb_counter_iter_t : struct hb_counter_iter_t :
hb_iter_t<hb_counter_iter_t<T, S>, T> hb_iter_t<hb_counter_iter_t<T, S>, T>
{ {
hb_counter_iter_t (T start, T end_, S step) : v (start), end_ (end__for (start, end_, step)), step (step) {} hb_counter_iter_t (T start, T end_, S step) : v (start), end_ (end_for (start, end_, step)), step (step) {}
typedef T __item_t__; typedef T __item_t__;
static constexpr bool is_random_access_iterator = true; static constexpr bool is_random_access_iterator = true;
@ -549,8 +549,10 @@ struct hb_counter_iter_t :
{ return v != o.v || end_ != o.end_ || step != o.step; } { return v != o.v || end_ != o.end_ || step != o.step; }
private: private:
static inline T end__for (T start, T end_, S step) static inline T end_for (T start, T end_, S step)
{ {
if (!step)
return end_;
auto res = (end_ - start) % step; auto res = (end_ - start) % step;
if (!res) if (!res)
return end_; return end_;