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Changed definitions for 'char' for is_signed and is_unsigned to handle instances where char can be unsigned.

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This commit is contained in:
John Wellbelove 2016-06-18 07:06:06 +01:00
parent 5b2ea0f0c6
commit 54d90ffbf3
1 changed files with 2 additions and 1 deletions
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3
src/type_traits.h
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@ -152,7 +152,7 @@ namespace etl
/// is_signed
///\ingroup type_traits
template <typename T> struct is_signed : false_type {};
template <> struct is_signed<char> : true_type {};
template <> struct is_signed<char> : integral_constant<bool, (char(255) < 0)> {};
template <> struct is_signed<wchar_t> : public etl::integral_constant<bool, static_cast<bool>(wchar_t(-1) < wchar_t(0))> {};
template <> struct is_signed<signed char> : true_type {};
template <> struct is_signed<short> : true_type {};
@ -170,6 +170,7 @@ namespace etl
///\ingroup type_traits
template <typename T> struct is_unsigned : false_type {};
template <> struct is_unsigned<bool> : true_type {};
template <> struct is_unsigned<char> : integral_constant<bool, (char(255) > 0)> {};
template <> struct is_unsigned<unsigned char> : true_type {};
template <> struct is_unsigned<wchar_t> : public etl::integral_constant<bool, (wchar_t(-1) > wchar_t(0))> {};
template <> struct is_unsigned<unsigned short> : true_type {};