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[bit-page] Minor simplify bit-page specification

This commit is contained in:
Behdad Esfahbod 2023-01-12 13:14:24 -07:00
parent 32866a331e
commit 0d66529135
1 changed files with 3 additions and 3 deletions
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6
src/hb-bit-page.hh
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@ -301,10 +301,10 @@ struct hb_bit_page_t
static constexpr hb_codepoint_t INVALID = HB_SET_VALUE_INVALID; static constexpr hb_codepoint_t INVALID = HB_SET_VALUE_INVALID;
typedef unsigned long long elt_t; typedef unsigned long long elt_t;
static constexpr unsigned PAGE_BITS = 512; static constexpr unsigned PAGE_BITS_LOG_2 = 9; // 512 bits
static_assert ((PAGE_BITS & ((PAGE_BITS) - 1)) == 0, ""); static constexpr unsigned PAGE_BITS = 1 << PAGE_BITS_LOG_2;
static constexpr unsigned PAGE_BITS_LOG_2 = 9;
static_assert (1 << PAGE_BITS_LOG_2 == PAGE_BITS, ""); static_assert (1 << PAGE_BITS_LOG_2 == PAGE_BITS, "");
static_assert ((PAGE_BITS & ((PAGE_BITS) - 1)) == 0, "");
static constexpr unsigned PAGE_BITMASK = PAGE_BITS - 1; static constexpr unsigned PAGE_BITMASK = PAGE_BITS - 1;
static unsigned int elt_get_min (const elt_t &elt) { return hb_ctz (elt); } static unsigned int elt_get_min (const elt_t &elt) { return hb_ctz (elt); }