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) |
|---|
© cppreference.com在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。
本文档系腾讯云开发者社区成员共同维护，如有问题请联系 cloudcommunity@tencent.com
