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32 lines
897 B
32 lines
897 B
import { isNumber } from '../isNumber';
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/**
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* 减法函数，用于处理浮点数减法并保持精度。
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* @param {number} num1 - 被减数。
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* @param {number} num2 - 减数。
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* @returns {number} 减法运算的结果，保留正确的精度。
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*/
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export function floatSub(num1 : number, num2 : number) : number {
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if (!(isNumber(num1) || isNumber(num2))) {
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console.warn('Please pass in the number type');
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return NaN;
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}
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let r1:number, r2:number, m:number, n:number;
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try {
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r1 = num1.toString().split('.')[1].length;
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} catch (error) {
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r1 = 0;
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}
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try {
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r2 = num2.toString().split('.')[1].length;
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} catch (error) {
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r2 = 0;
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}
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m = Math.pow(10, Math.max(r1, r2));
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n = r1 >= r2 ? r1 : r2;
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// #ifndef APP-ANDROID
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return Number(((num1 * m - num2 * m) / m).toFixed(n));
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// #endif
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// #ifdef APP-ANDROID
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return parseFloat(((num1 * m - num2 * m) / m).toFixed(n));
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// #endif
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}
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