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25 lines
774 B
25 lines
774 B
4 months ago
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/**
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* 保留x位小数
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*/
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export declare function toPrecision(num: number, precision: number): number;
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/**
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* 千分位
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* 100000 -> 10,000
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*/
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export declare function toThousands(num: number): string;
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/**
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* 获得数字科学计数
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* 1000000 = 1e6
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*/
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export declare function toScientificNotation(num: number): string;
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/**
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* 用k的方式表达
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* 1234 -> 1K
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* 12345 -> 12K
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*/
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export declare function toKNotation(num: number, precision?: number): string;
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export declare const ifNegative: <T extends keyof any>(x: any, a: T, b?: T) => T | undefined;
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export declare const ifPositive: <T extends keyof any>(x: any, a: T, b?: T) => T | undefined;
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export declare const multi: (a: number, b: number) => number;
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export declare const mid: (a: number, b?: number) => number;
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