修复精度计算问题

src/utils/basic/util.js

@@ -174,16 +174,76 @@ class Util {
   // 数字运算，处理精度问题
   numCalc(type, num1, num2) {
     // 最多保留两位小数，不四舍五入
-    num1 = Math.floor(Number(num1) * 100)
-    num2 = Math.floor(Number(num2) * 100)
     if (type === '+') {
-      return (num1 + num2) / 100
+      return add(num1, num2)
     } else if (type === '-') {
-      return (num1 - num2) / 100
+      return sub(num1, num2)
     } else if (type === '*') {
-      return (num1 * num2) / 100
+      return mul(num1, num2)
     } else if (type === '/') {
-      return METHOD.notRoundedToFixed(num1 / num2 / 100)
+      return div(num1, num2)
+    }
+
+    function add(org1, org2) {
+      var r1, r2, m
+      try {
+        r1 = Number(org1)
+          .toString()
+          .split('.')[1].length
+      } catch (e) {
+        r1 = 0
+      }
+      try {
+        r2 = Number(org2)
+          .toString()
+          .split('.')[1].length
+      } catch (e) {
+        r2 = 0
+      }
+      m = Math.pow(10, Math.max(r1, r2))
+      return (Number(org1) * m + Number(org2) * m) / m
+    }
+    function sub(r1, r2) {
+      return add(r1, -r2)
+    }
+    function mul(org1, org2) {
+      var m = 0,
+        s1 = Number(org1).toString(),
+        s2 = Number(org2).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)
+    }
+    function div(org1, org2) {
+      var t1 = 0,
+        t2 = 0,
+        r1,
+        r2
+      try {
+        t1 = Number(org1)
+          .toString()
+          .split('.')[1].length
+      } catch (e) {}
+      try {
+        t2 = Number(org2)
+          .toString()
+          .split('.')[1].length
+      } catch (e) {}
+      r1 = Number(
+        Number(org1)
+          .toString()
+          .replace('.', '')
+      )
+      r2 = Number(
+        Number(org2)
+          .toString()
+          .replace('.', '')
+      )
+      return (r1 / r2) * Math.pow(10, t2 - t1)
     }
   }
   // 金额保留两位小数，不四舍五入