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Add initial double-double support

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This commit is contained in:
Victor Zverovich
2022-05-21 07:32:54 -07:00
parent 147e8ca580
commit c6324009ba
3 changed files with 52 additions and 14 deletions
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include/fmt/format.h
+8 -7
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@@ -990,11 +990,12 @@ constexpr auto is_negative(T) -> bool {
return false;
}
template <typename T> constexpr auto is_supported_floating_point(T) -> bool {
return (std::is_same<T, float>() && FMT_USE_FLOAT) ||
(std::is_same<T, double>() && FMT_USE_DOUBLE) ||
(std::is_same<T, long double>() && FMT_USE_LONG_DOUBLE) ||
is_float128<T>();
template <typename T>
FMT_CONSTEXPR auto is_supported_floating_point(T) -> bool {
if (std::is_same<T, float>()) return FMT_USE_FLOAT;
if (std::is_same<T, double>()) return FMT_USE_DOUBLE;
if (std::is_same<T, long double>()) return FMT_USE_LONG_DOUBLE;
return true;
}
// Smallest of uint32_t, uint64_t, uint128_t that is large enough to
@@ -2345,14 +2346,14 @@ template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value&&
FMT_CONSTEXPR20 bool isfinite(T value) {
constexpr T inf = T(std::numeric_limits<double>::infinity());
if (is_constant_evaluated())
return !isnan(value) && value != inf && value != -inf;
return !detail::isnan(value) && value != inf && value != -inf;
return std::isfinite(value);
}
template <typename T, FMT_ENABLE_IF(!has_isfinite<T>::value)>
FMT_CONSTEXPR bool isfinite(T value) {
T inf = T(std::numeric_limits<double>::infinity());
// std::isfinite doesn't support __float128.
return !isnan(value) && value != inf && value != -inf;
return !detail::isnan(value) && value != inf && value != -inf;
}
template <typename T, FMT_ENABLE_IF(is_floating_point<T>::value)>