75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# @version : 1.0
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# @Creaet Time : 2022/5/12 17:09
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# @File : compute.py
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# @IDE : PyCharm
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# @desc : 精准计算
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from decimal import Decimal
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from typing import Union
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class Compute:
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@staticmethod
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def add(precision: int, *args: Union[float, Decimal]) -> float:
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"""
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相加
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:param precision: 精度
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"""
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result = 0
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for i in args:
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if i is None:
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i = 0
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result += Decimal(str(i))
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if precision == -1:
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return float(result)
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return round(float(result), precision)
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@staticmethod
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def subtract(precision: int, *args: Union[float, Decimal]) -> float:
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"""
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相减
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:param precision: 精度
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"""
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if args[0] is None:
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start = 0
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else:
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start = args[0]
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result = Decimal(str(start))
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for i in args[1:]:
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if i is None:
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i = 0
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result -= Decimal(str(i))
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if precision == -1:
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return float(result)
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return round(float(result), precision)
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@staticmethod
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def divide(precision: int, *args: Union[float, Decimal]) -> float:
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"""
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除法
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:param precision: 精度
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"""
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result = Decimal(str(args[0]))
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for i in args[1:]:
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result = result / Decimal(str(i))
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if precision == -1:
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return float(result)
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return round(float(result), precision)
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@staticmethod
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def multiply(precision: int, *args: Union[float, Decimal]) -> float:
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"""
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乘法
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:param precision: 精度
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"""
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result = Decimal(str(1))
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for i in args:
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if i is None:
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i = 1
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result = result * Decimal(str(i))
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if precision == -1:
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return float(result)
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return round(float(result), precision)
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