Ruby BigDecimal truncate()函数
BigDecimal#truncate() : truncate()是BigDecimal类的一个方法,通过截断到最接近的整数(默认情况下)来返回大十进制。
语法。BigDecimal.truncate()
参数。大十进制的值
返回:通过截断到最接近的整数来返回大十进制(默认情况下)。
例子 #1 :
# Ruby code for BigDecimal.truncate() method
# loading library
require 'bigdecimal'
require 'bigdecimal/util'
# declaring bigdecimal
a = BigDecimal("10")
# declaring bigdecimal
b = -BigDecimal("10")
# declaring bigdecimal
c = -BigDecimal("11.43")
# truncate() method
puts "BigDecimal a truncate method : #{a.truncate()}\n\n"
puts "BigDecimal b truncate method : #{b.truncate()}\n\n"
puts "BigDecimal c truncate method : #{c.truncate()}\n\n"
输出:
BigDecimal a truncate method : 10
BigDecimal b truncate method : -10
BigDecimal c truncate method : -11
例子 #2 :
# Ruby code for BigDecimal.truncate() 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')
# truncate() method
puts "BigDecimal a truncate method : #{a.truncate()}\n\n"
puts "BigDecimal b truncate method : #{b.truncate()}\n\n"
puts "BigDecimal c truncate method : #{c.truncate()}\n\n"
输出:
BigDecimal a truncate method : 144
BigDecimal b truncate method : -205121100730586399999999999999999999999999999999999999999999999999999999999999999999999999999990
BigDecimal c truncate method : -3