NumberUtils.ts
1.75 KB
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//浮点数加法运算
export function FloatAdd(arg1: any, arg2: any) {
let 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;
}
//浮点数减法运算
export function FloatSub(arg1: any, arg2: any) {
let 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));
//动态控制精度长度
n = (r1 = r2) ? r1 : r2;
return ((arg1 * m - arg2 * m) / m).toFixed(n);
}
//浮点数乘法运算
export function FloatMul(arg1: any, arg2: any) {
let m = 0,
s1 = arg1.toString(),
s2 = arg2.toString();
try {
m += s1.split('.')[1].length;
} catch (e) {}
try {
m += s2.split('.')[1].length;
} catch (e) {}
return (
(Number(s1.replace('.', '')) * Number(s2.replace('.', ''))) /
Math.pow(10, m)
);
}
//浮点数除法运算
export function FloatDiv(arg1: any, arg2: any) {
let t1 = 0,
t2 = 0,
r1,
r2;
try {
t1 = arg1.toString().split('.')[1].length;
} catch (e) {}
try {
t2 = arg2.toString().split('.')[1].length;
} catch (e) {}
if (Math) {
r1 = Number(arg1.toString().replace('.', ''));
r2 = Number(arg2.toString().replace('.', ''));
return (r1 / r2) * Math.pow(10, t2 - t1);
}
}
export function roundToDecimal(num : any, decimalPlaces: any) {
return Number(num.toFixed(decimalPlaces));
}