65 lines
1.3 KiB
JavaScript
65 lines
1.3 KiB
JavaScript
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// 浮点数加法
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export function add (arg1, arg2) {
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var r1, r2, m
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try {
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r1 = arg1.toString().split('.')[1].length
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} catch (e) {
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r1 = 0
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}
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try {
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r2 = arg2.toString().split('.')[1].length
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} catch (e) {
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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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return (arg1 * m + arg2 * m) / m
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}
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// 浮点数减法
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export function sub (arg1, arg2) {
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var r1, r2, m, n
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try {
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r1 = arg1.toString().split('.')[1].length
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} catch (e) {
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r1 = 0
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}
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try {
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r2 = arg2.toString().split('.')[1].length
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} catch (e) {
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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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return Math.abs(((arg1 * m - arg2 * m) / m).toFixed(n))
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}
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//浮点乘法
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export function mul (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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//浮点除法
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export function div (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(".", "")), xyutil.mul(c / d, Math.pow(10, f - e));
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}
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export default {
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add,
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sub,
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mul,
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div
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}
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