Ruby BigDecimal to_d()函数

BigDecimal#to_d() : to_d()是BigDecimal类的一个方法，用于返回Big decimal的自身。

语法。BigDecimal.to_d()

参数。大十进制的值

返回：大十进制的自身。

例子 #1 :

# Ruby code for BigDecimal.to_d() method
  
# loading library
require 'bigdecimal'
require 'bigdecimal/util'
  
# declaring bigdecimal
a = BigDecimal("10")
  
# declaring bigdecimal
b = -BigDecimal("10")
  
# declaring bigdecimal
c = -BigDecimal("11.43")
  
# to_d() method
puts "BigDecimal a to_d method : #{a.to_d()}\n\n"
  
puts "BigDecimal b to_d method : #{b.to_d()}\n\n"
  
puts "BigDecimal c to_d method : #{c.to_d()}\n\n"

输出:

BigDecimal a to_d method : 0.1E2

BigDecimal b to_d method : -0.1E2

BigDecimal c to_d method : -0.1143E2

例子 #2 :

# Ruby code for BigDecimal.to_d() method
  
# loading library
require 'bigdecimal'
require 'bigdecimal/util'
  
# declaring bigdecimal
a = BigDecimal('12')*12
  
# declaring bigdecimal
b = BigDecimal('10')-(22 ** 7.1) ** 10
  
# declaring bigdecimal
c = BigDecimal('-3')
  
# to_d() method
puts "BigDecimal a to_d method : #{a.to_d()}\n\n"
  
puts "BigDecimal b to_d method : #{b.to_d()}\n\n"
  
puts "BigDecimal c to_d method : #{c.to_d()}\n\n"

输出:

BigDecimal a to_d method : 0.144E3

BigDecimal b to_d method : -0.20512110073058639999999999999999999999999999999999999999999999999999999999999999999999999999999E96

BigDecimal c to_d method : -0.3E1