std::numeric_limits<T>::has_denorm
来自 zh.cppreference.net
static const std::float_denorm_style has_denorm;
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(C++11 前) | |
static constexpr std::float_denorm_style has_denorm;
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(C++11 起) (C++23 中弃用) |
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std::numeric_limits<T>::has_denorm的值标识支持非规格化值的浮点类型。
标准特化
T
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std:: numeric_limits < T > :: has_denorm 的值 |
| /* non-specialized */ | std::denorm_absent |
| bool | std::denorm_absent |
| char | std::denorm_absent |
| signed char | std::denorm_absent |
| unsigned char | std::denorm_absent |
| wchar_t | std::denorm_absent |
| char8_t (since C++20) | std::denorm_absent |
| char16_t (since C++11) | std::denorm_absent |
| char32_t (since C++11) | std::denorm_absent |
| short | std::denorm_absent |
| unsigned short | std::denorm_absent |
| int | std::denorm_absent |
| unsigned int | std::denorm_absent |
| long | std::denorm_absent |
| unsigned long | std::denorm_absent |
| long long (since C++11) | std::denorm_absent |
| unsigned long long (since C++11) | std::denorm_absent |
| float | 通常为 std::denorm_present |
| double | 通常为 std::denorm_present |
| long double | 通常为 std::denorm_present |
参见
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[static]
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返回给定浮点类型的最小正次正规值
(公开静态成员函数) |
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指示浮点非规范化模式
(枚举) |