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Workaround broken numeric_limites, part 2 (#1787)

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This commit is contained in:
Victor Zverovich 2020-07-30 09:42:24 -07:00
parent 0cc73ebf79
commit ccf8561cb3
1 changed files with 7 additions and 2 deletions
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9
include/fmt/format.h
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@ -724,13 +724,18 @@ class FMT_API format_error : public std::runtime_error {
namespace detail {
template <typename T>
constexpr bool is_signed() {
return std::numeric_limits<T>::is_signed || std::is_same<T, int128_t>();
}
// Returns true if value is negative, false otherwise.
// Same as `value < 0` but doesn't produce warnings if T is an unsigned type.
template <typename T, FMT_ENABLE_IF(std::numeric_limits<T>::is_signed)>
template <typename T, FMT_ENABLE_IF(is_signed<T>())>
FMT_CONSTEXPR bool is_negative(T value) {
return value < 0;
}
template <typename T, FMT_ENABLE_IF(!std::numeric_limits<T>::is_signed)>
template <typename T, FMT_ENABLE_IF(!is_signed<T>())>
FMT_CONSTEXPR bool is_negative(T) {
return false;
}