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[meta] Make hb_is_signed/hb_is_unsigned work on all types 

They were failing if type was non-scalar, eg. pointer.
This commit is contained in:
Behdad Esfahbod 2021-08-05 12:23:53 -06:00
parent baf2166a24
commit 407a112e7b
1 changed files with 8 additions and 8 deletions
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16
src/hb-meta.hh
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@ -259,15 +259,15 @@ using hb_is_arithmetic = hb_bool_constant<
#define hb_is_arithmetic(T) hb_is_arithmetic<T>::value
template <typename T>
using hb_is_signed = hb_conditional<hb_is_arithmetic (T),
hb_bool_constant<(T) -1 < (T) 0>,
hb_false_type>;
template <typename T, bool is_arithmetic> struct hb_is_signed_;
template <typename T> struct hb_is_signed_<T, false> : hb_false_type {};
template <typename T> struct hb_is_signed_<T, true> : hb_bool_constant<(T) -1 < (T) 0> {};
template <typename T> struct hb_is_signed : hb_is_signed_<T, hb_is_arithmetic (T)> {};
#define hb_is_signed(T) hb_is_signed<T>::value
template <typename T>
using hb_is_unsigned = hb_conditional<hb_is_arithmetic (T),
hb_bool_constant<(T) 0 < (T) -1>,
hb_false_type>;
template <typename T, bool is_arithmetic> struct hb_is_unsigned_;
template <typename T> struct hb_is_unsigned_<T, false> : hb_false_type {};
template <typename T> struct hb_is_unsigned_<T, true> : hb_bool_constant<(T) 0 < (T) -1> {};
template <typename T> struct hb_is_unsigned : hb_is_unsigned_<T, hb_is_arithmetic (T)> {};
#define hb_is_unsigned(T) hb_is_unsigned<T>::value
template <typename T> struct hb_int_min;