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| // 浮点数加法
| export function add (arg1, arg2) {
| var r1, r2, m
| try {
| r1 = arg1.toString().split('.')[1].length
| } catch (e) {
| r1 = 0
| }
| try {
| r2 = arg2.toString().split('.')[1].length
| } catch (e) {
| r2 = 0
| }
| m = Math.pow(10, Math.max(r1, r2))
| return (arg1 * m + arg2 * m) / m
| }
| // 浮点数减法
| export function sub (arg1, arg2) {
| var r1, r2, m, n
| try {
| r1 = arg1.toString().split('.')[1].length
| } catch (e) {
| r1 = 0
| }
| try {
| r2 = arg2.toString().split('.')[1].length
| } catch (e) {
| r2 = 0
| }
| m = Math.pow(10, Math.max(r1, r2))
| n = (r1 >= r2) ? r1 : r2
| return Math.abs(((arg1 * m - arg2 * m) / m).toFixed(n))
| }
| //浮点乘法
| export function mul (a, b) {
| var c = 0,
| d = a.toString(),
| e = b.toString();
| try {
| c += d.split(".")[1].length;
| } catch (f) {}
| try {
| c += e.split(".")[1].length;
| } catch (f) {}
| return Number(d.replace(".", "")) * Number(e.replace(".", "")) / Math.pow(10, c);
| }
| //浮点除法
| export function div (a, b) {
| var c, d, e = 0,
| f = 0;
| try {
| e = a.toString().split(".")[1].length;
| } catch (g) {}
| try {
| f = b.toString().split(".")[1].length;
| } catch (g) {}
| return c = Number(a.toString().replace(".", "")), d = Number(b.toString().replace(".", "")), xyutil.mul(c / d, Math.pow(10, f - e));
| }
| export default {
| add,
| sub,
| mul,
| div
| }
|
|
