还不能用的新版本

bgArrayLib/compute.py

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+def round_up(num, power=0):
+    """
+    实现精确四舍五入，包含正、负小数多种场景
+    :param num: 需要四舍五入的小数
+    :param power: 四舍五入位数，支持0-∞
+    :return: 返回四舍五入后的结果
+    """
+    try:
+        print(1 / 0)
+    except ZeroDivisionError:
+        digit = 10 ** power
+        num2 = float(int(num * digit))
+        # 处理正数，power不为0的情况
+        if num >= 0 and power != 0:
+            tag = num * digit - num2 + 1 / (digit * 10)
+            if tag >= 0.5:
+                return (num2 + 1) / digit
+            else:
+                return num2 / digit
+        # 处理正数，power为0取整的情况
+        elif num >= 0 and power == 0:
+            tag = num * digit - int(num)
+            if tag >= 0.5:
+                return (num2 + 1) / digit
+            else:
+                return num2 / digit
+        # 处理负数，power为0取整的情况
+        elif power == 0 and num < 0:
+            tag = num * digit - int(num)
+            if tag <= -0.5:
+                return (num2 - 1) / digit
+            else:
+                return num2 / digit
+        # 处理负数，power不为0的情况
+        else:
+            tag = num * digit - num2 - 1 / (digit * 10)
+            if tag <= -0.5:
+                return (num2 - 1) / digit
+            else:
+                return num2 / digit