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[hash] Adjust prime number

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Previous one wasn't a prime. Ouch!
This commit is contained in:
Behdad Esfahbod 2023-05-09 17:11:05 -06:00
parent 9cc7eb80ff
commit 1fbb08584b
1 changed files with 2 additions and 2 deletions
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4
src/hb-algs.hh
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@ -319,11 +319,11 @@ struct
template <typename T,
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, v * 8388607u /* Mersenne prime */)
impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, v * 131071u /* Mersenne prime */)
template <typename T,
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, (v ^ (v >> 32)) * 8388607u /* Mersenne prime */)
impl (const T& v, hb_priority<1>) const HB_RETURN (uint32_t, (v ^ (v >> 32)) * 131071u /* Mersenne prime */)
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)))