# 数字

¥Number

基本数值的封装。

¥Wrappers for basic numerical values.

Number 对象也已根据基本 WebAssembly 类型分为一个类。与 JavaScript 不同，这些类不能有实际实例，因此它的工作方式与 JavaScript 的 (MDN (opens new window)) 有点不同。

¥The Number object has been split into one class per basic WebAssembly type as well. Unlike in JavaScript, these classes cannot have actual instances, hence it works a bit different than JavaScript's (MDN (opens new window)).

# 整数

¥Integers

下面的名称 Number 代表封装器 I8、I16、I32、I64、U8、U16、U32 或 U64 之一，代表它们各自的基本整数类型 T。

¥The name Number below stands for one of the wrappers I8, I16, I32, I64, U8, U16, U32 or U64 representing their respective basic integer type T.

# 静态成员

¥Static members

```
const MIN_VALUE: T
```
各个基本类型的最小可表示值。与浮点值不同，浮点值是最小的可表示正值。

¥The smallest representable value of the respective basic type. Differs from floating point values where it is the smallest representable positive value.
```
const MAX_VALUE: T
```
各个基本类型的最大可表示值。

¥The largest representable value of the respective basic type.
```
function parseInt(value: string, radix?: i32): T
```
将字符串解析为相应基本类型的值。

¥Parses a string to a value of the respective basic type.

# 实例成员

¥Instance members

```
function toString(radix?: i32): string
```
返回转换为字符串的相应基本值。

¥Returns the respective basic value converted to a string.

# 花车

¥Floats

下面的名称 Number 代表封装器 F32 或 F64 之一，代表它们各自的基本浮点类型 T。

¥The name Number below stands for one of the wrappers F32 or F64 representing their respective basic floating point type T.

# 静态成员

¥Static members

```
const EPSILON: T
```
1.0 与比 1.0 大的最小数之差。

¥The difference between 1.0 and the smallest number larger than 1.0.
```
const MAX_VALUE: T
```
相应基本类型的最大可表示正值。

¥The largest representable positive value by the respective basic type.
```
const MIN_VALUE: T
```
相应基本类型的最小可表示正值。

¥The smallest representable positive value by the respective basic type.
```
const MAX_SAFE_INTEGER: T
```
相应基本类型可表示的最大安全整数。

¥The largest safe integer representable by the respective basic type.
```
const MIN_SAFE_INTEGER: T
```
相应基本类型可表示的最小安全整数。

¥The smallest safe integer representable by the respective basic type.
```
const POSITIVE_INFINITY: T
```
相应基本类型的正无穷大。

¥Positive infinity of the respective basic type.
```
const NEGATIVE_INFINITY: T
```
相应基本类型的负无穷大。

¥Negative infinity of the respective basic type.
```
const NaN: T
```
相应基本类型的 NaN（非数字）。

¥NaN (Not A Number) of the respective basic type.
```
function isNaN(value: T): bool
```
测试该值是否为 NaN。

¥Tests if the value is NaN.
```
function isFinite(value: T): bool
```
测试该值是否是有限的，即不是 NaN 、 POSITIVE_INFINITY 或 NEGATIVE_INFINITY.

¥Tests if the value is finite, that is not NaN , POSITIVE_INFINITY or NEGATIVE_INFINITY.
```
function isInteger(value: T): bool
```
测试该值是否为整数。

¥Tests if the value is an integer.
```
function isSafeInteger(value: T): bool
```
测试该值是否是安全整数。

¥Tests if the value is a safe integer.
```
function parseInt(value: string, radix?: i32): T
```
将字符串解析为相应基本类型的整数值。

¥Parses a string to an integer value of the respective basic type.
```
function parseFloat(value: string): T
```
将字符串解析为相应基本类型的浮点值。

¥Parses a string to a float value of the respective basic type.

# 实例成员

¥Instance members

```
function toString(radix?: i32): string
```
返回转换为字符串的相应基本值。目前此处忽略 radix 参数。

¥Returns the respective basic value converted to a string. The radix parameter is currently ignored here.

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