# Number

`import { Number } from "destack:math";`

Number constants and parsing functions.

```ds title="Number"
export class Number {
    EPSILON: float64;
    MAX_VALUE: float64;
    MIN_VALUE: float64;
    MAX_SAFE_INTEGER: float64;
    MIN_SAFE_INTEGER: float64;
    POSITIVE_INFINITY: float64;
    NEGATIVE_INFINITY: float64;
    NaN: float64;
    toString(radix?: float64 | undefined): Cow<"frame", string>;
    toFixed(fractionDigits?: float64 | undefined): Cow<"frame", string>;
    toExponential(fractionDigits?: float64 | undefined): Cow<"frame", string>;
    toPrecision(precision?: float64 | undefined): Cow<"frame", string>;
    toLocaleString(locales?: string | string[] | undefined, options?: NumberFormatOptions | undefined): Cow<"frame", string>;
    valueOf(): float64;
    static isFinite(value: unknown): boolean;
    static isInteger(value: unknown): boolean;
    static isNaN(value: unknown): boolean;
    static isSafeInteger(value: unknown): boolean;
    static parseFloat(text: string): float64;
    static parseInt(text: string, radix?: float64 | undefined): float64;
}
```

[language/library/src/math/number.ds:104:195](https://github.com/destack-sh/destack/blob/main/language/library/src/math/number.ds#L104-L195)

## Members

### `EPSILON: float64`

Difference between 1 and the next representable float64 value.

### `MAX_VALUE: float64`

The largest finite float64 value.

### `MIN_VALUE: float64`

The smallest positive float64 value.

### `MAX_SAFE_INTEGER: float64`

The largest exactly representable integer in a float64.

### `MIN_SAFE_INTEGER: float64`

The smallest exactly representable integer in a float64.

### `POSITIVE_INFINITY: float64`

Positive infinity.

### `NEGATIVE_INFINITY: float64`

Negative infinity.

### `NaN: float64`

Not-a-number.

### `toString(radix?: float64 | undefined): Cow<"frame", string>`

Return this number as a string.

### `toFixed(fractionDigits?: float64 | undefined): Cow<"frame", string>`

Return this number in fixed-point notation.

### `toExponential(fractionDigits?: float64 | undefined): Cow<"frame", string>`

Return this number in exponential notation.

### `toPrecision(precision?: float64 | undefined): Cow<"frame", string>`

Return this number with the requested precision.

### `toLocaleString(locales?: string | string[] | undefined, options?: NumberFormatOptions | undefined): Cow<"frame", string>`

Return this number as a locale-aware string.

### `valueOf(): float64`

Return the primitive number value.

### `static isFinite(value: unknown): boolean`

Return whether `value` is finite.

### `static isInteger(value: unknown): boolean`

Return whether `value` is an integer.

### `static isNaN(value: unknown): boolean`

Return whether `value` is NaN.

### `static isSafeInteger(value: unknown): boolean`

Return whether `value` is exactly representable as an integer.

### `static parseFloat(text: string): float64`

Parse a float64 from `text`.

### `static parseInt(text: string, radix?: float64 | undefined): float64`

Parse an integer from `text`.