organicmaps/harfbuzz
13
Fork 0
mirror of https://github.com/harfbuzz/harfbuzz.git synced 2025-04-14 17:13:40 +00:00
Code Issues 1 Projects Releases Wiki Activity Actions

[instancer] add a hashing impl for floating point type

Browse source
This commit is contained in:
Qunxin Liu 2023-07-18 09:52:40 -07:00
parent 5a4694b693
commit 1d91622ddf
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/hb-algs.hh
View file

@ -367,6 +367,10 @@ struct
hb_enable_if (std::is_integral<T>::value && sizeof (T) > sizeof (uint32_t))> constexpr auto
impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, (uint32_t) (v ^ (v >> 32)) * 2654435761u /* Knuth's multiplicative hash */)
template <typename T,
hb_enable_if (std::is_floating_point<T>::value)> constexpr auto
impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, fasthash32 (std::addressof (v), sizeof (T), 0xf437ffe6))
template <typename T> constexpr auto
impl (const T& v, hb_priority<0>) const HB_RETURN (uint32_t, std::hash<hb_decay<decltype (hb_deref (v))>>{} (hb_deref (v)))