Python | Decimal next _ 减()方法
原文:https://www . geesforgeks . org/python-decimal-next _ next-method/
Decimal # next _ 减():next _ 减()是一个 Decimal 类方法，返回小于 Decimal 值的最大可表示数。
语法:decimal . next _ 减号()
参数:十进制值
返回:小于十进制值的最大可表示数。
代码# 1:next _ 减()方法示例
# Python Program explaining
# next_minus() method
# loading decimal library
from decimal import *
# Initializing a decimal value
a = Decimal(-1)
b = Decimal('0.142857')
# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)
# Using Decimal.next_minus() method
print ("\n\nDecimal a with next_minus() method : ", a.next_minus())
print ("Decimal a with next_minus() method : ", a.next_minus())
print ("Decimal b with next_minus() method : ", b.next_minus())
输出:
Decimal value a : -1
Decimal value b : 0.142857
Decimal a with next_minus() method : -1.000000000000000000000000001
Decimal a with next_minus() method : -1.000000000000000000000000001
Decimal b with next_minus() method : 0.1428569999999999999999999999
代码# 2:next _ 减()方法示例
# Python Program explaining
# next_minus() method
# loading decimal library
from decimal import *
# Initializing a decimal value
a = Decimal('-3.14')
b = Decimal('321e + 5')
# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)
# Using Decimal.next_minus() method
print ("\n\nDecimal a with next_minus() method : ", a.next_minus())
print ("Decimal a with next_minus() method : ", a.next_minus())
print ("Decimal b with next_minus() method : ", b.next_minus())
输出:
Decimal value a : -3.14
Decimal value b : 3.21E+7
Decimal a with next_minus() method : -3.140000000000000000000000001
Decimal a with next_minus() method : -3.140000000000000000000000001
Decimal b with next_minus() method : 32099999.99999999999999999999
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