std::numeric_limits::round_error
static T round_error(); | ? | (until C++11) |
|---|---|---|
static constexpr T round_error(); | ? | (since C++11) |
返回以ULPS%28单位表示的最大可能的舍入误差，该值在ISO 10967定义的最后一个位置%29，它可以从0.5%28四舍五入到最近的数字%29到1.0%28舍入到零或无穷大%29。只有当std::numeric_limits<T>::is_integer==false...
返回值
T | std::numeric_limits<T>::round_error() |
|---|---|
/* non-specialized */ | T(); |
bool | false |
char | ?0? |
signed char | ?0? |
unsigned char | ?0? |
wchar_t | ?0? |
char16_t | ?0? |
char32_t | ?0? |
short | ?0? |
unsigned short | ?0? |
int | ?0? |
unsigned int | ?0? |
long | ?0? |
unsigned long | ?0? |
long long | ?0? |
unsigned long long | ?0? |
float | 0.5F |
double | 0.5 |
long double | 0.5L |
例外
(none) | (until C++11) |
|---|---|
noexcept specification: noexcept | (since C++11) |
另见
round_style static | identifies the rounding style used by the type (public static member constant) |
|---|
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