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Rewrite hb_is_signed()

This commit is contained in:
Behdad Esfahbod 2019-04-26 14:40:01 -07:00
parent 73c82f2301
commit 3a7f5bdd18
1 changed files with 11 additions and 9 deletions
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20
src/hb-meta.hh
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@ -134,15 +134,17 @@ template <typename T> struct hb_is_same<T, T> : hb_true_t {};
#define hb_is_same(T, T2) hb_is_same<T, T2>::value #define hb_is_same(T, T2) hb_is_same<T, T2>::value
template <typename T> struct hb_is_signed; template <typename T> struct hb_is_signed;
/* https://github.com/harfbuzz/harfbuzz/issues/1535 */ template <> struct hb_is_signed<char> { enum { value = CHAR_MIN < 0 }; };
template <> struct hb_is_signed<int8_t> { enum { value = true }; }; template <> struct hb_is_signed<signed char> { enum { value = true }; };
template <> struct hb_is_signed<int16_t> { enum { value = true }; }; template <> struct hb_is_signed<unsigned char> { enum { value = false }; };
template <> struct hb_is_signed<int32_t> { enum { value = true }; }; template <> struct hb_is_signed<signed short> { enum { value = true }; };
template <> struct hb_is_signed<int64_t> { enum { value = true }; }; template <> struct hb_is_signed<unsigned short> { enum { value = false }; };
template <> struct hb_is_signed<uint8_t> { enum { value = false }; }; template <> struct hb_is_signed<signed int> { enum { value = true }; };
template <> struct hb_is_signed<uint16_t> { enum { value = false }; }; template <> struct hb_is_signed<unsigned int> { enum { value = false }; };
template <> struct hb_is_signed<uint32_t> { enum { value = false }; }; template <> struct hb_is_signed<signed long> { enum { value = true }; };
template <> struct hb_is_signed<uint64_t> { enum { value = false }; }; template <> struct hb_is_signed<unsigned long> { enum { value = false }; };
template <> struct hb_is_signed<signed long long> { enum { value = true }; };
template <> struct hb_is_signed<unsigned long long> { enum { value = false }; };
#define hb_is_signed(T) hb_is_signed<T>::value #define hb_is_signed(T) hb_is_signed<T>::value
template <typename T> struct hb_int_min { static constexpr T value = 0; }; template <typename T> struct hb_int_min { static constexpr T value = 0; };