红宝石 | BigDecimal sub()函数
BigDecimal#sub() : sub()是一个 BigDecimal 类方法,它使用指定的值返回减法。
Syntax: BigDecimal.sub()
Parameter: BigDecimal values
Return: the subtraction using a specified value.
示例 #1:
# Ruby code for BigDecimal.sub() method
# loading library
require 'bigdecimal'
# declaring bigdecimal
a = BigDecimal("10")
# declaring bigdecimal
b = -BigDecimal("10")
# declaring bigdecimal
c = -BigDecimal("11.43")
# sub() method
puts "BigDecimal a sub method : #{a.sub(b, 2)}\n\n"
puts "BigDecimal b sub method : #{b.sub(c, 1)}\n\n"
puts "BigDecimal c sub method : #{c.sub(a, 4)}\n\n"
输出 :
BigDecimal a sub method : 0.2E2
BigDecimal b sub method : 0.1E1
BigDecimal c sub method : -0.2143E2
示例 #2:
# Ruby code for BigDecimal.sub() method
# loading library
require 'bigdecimal'
# declaring bigdecimal
a = BigDecimal('12')*12
# declaring bigdecimal
b = BigDecimal('10')-(22 ** 7.1) ** 10
# declaring bigdecimal
c = BigDecimal('-3')
# sub() method
puts "BigDecimal a sub method : #{a.sub(b, 2)}\n\n"
puts "BigDecimal b sub method : #{b.sub(c, 1)}\n\n"
puts "BigDecimal c sub method : #{c.sub(a, 4)}\n\n"
输出 :
BigDecimal a sub method : 0.21E96
BigDecimal b sub method : -0.2E96
BigDecimal c sub method : -0.147E3