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@ -367,6 +367,87 @@ const jnpf = {
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},
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isEmptyArray(data) {
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return Array.isArray(data) ? data.length === 0 : true
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}
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},
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/**
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* 解决两个数相加精度丢失问题
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* @param a
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* @param b
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* @returns {Number}
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*/
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floatAdd(a, b) {
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var c, d, e;
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if(undefined==a||null==a||""==a||isNaN(a)){a=0;}
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if(undefined==b||null==b||""==b||isNaN(b)){b=0;}
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try {
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c = a.toString().split(".")[1].length;
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} catch (f) {
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c = 0;
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}
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try {
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d = b.toString().split(".")[1].length;
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} catch (f) {
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d = 0;
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}
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e = Math.pow(10, Math.max(c, d));
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return (this.floatMul(a, e) + this.floatMul(b, e)) / e;
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},
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/**
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* 解决两个数相减精度丢失问题
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* @param a
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* @param b
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* @returns {Number}
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*/
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floatSub(a, b) {
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var c, d, e;
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if(undefined==a||null==a||""==a||isNaN(a)){a=0;}
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if(undefined==b||null==b||""==b||isNaN(b)){b=0;}
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try {
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c = a.toString().split(".")[1].length;
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} catch (f) {
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c = 0;
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}
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try {
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d = b.toString().split(".")[1].length;
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} catch (f) {
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d = 0;
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}
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e = Math.pow(10, Math.max(c, d));
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return (this.floatMul(a, e) - this.floatMul(b, e)) / e;
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},
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/**
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* 解决两个数相乘精度丢失问题
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* @param a
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* @param b
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* @returns {Number}
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*/
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floatMul(a, b) {
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var c = 0,
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d = a.toString(),
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e = b.toString();
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try {
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c += d.split(".")[1].length;
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} catch (f) {}
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try {
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c += e.split(".")[1].length;
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} catch (f) {}
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return Number(d.replace(".", "")) * Number(e.replace(".", "")) / Math.pow(10, c);
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},
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/**
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* 解决两个数相除精度丢失问题
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* @param a
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* @param b
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* @returns
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*/
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floatDiv(a, b) {
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var c, d, e = 0,
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f = 0;
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try {
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e = a.toString().split(".")[1].length;
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} catch (g) {}
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try {
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f = b.toString().split(".")[1].length;
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} catch (g) {}
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return c = Number(a.toString().replace(".", "")), d = Number(b.toString().replace(".", "")), floatMul(c / d, Math.pow(10, f - e));
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},
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}
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export default jnpf
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17602169347
2 years ago