红宝石 | BigDecimal 类底值

BigDecimal#floor() : floor()是一个 BigDecimal 类方法，它返回传递的 BigDecimal 值的下限值。

Syntax: BigDecimal.floor()

Parameter:
– BigDecimal value which is to get its floor value
– decimal digits (default = 0)

Return:
– smallest number >= to BigDecimal with a ndigits decimal point precision.
– For -ve precision : Integer with at least ndigits.abs trailing zeros.
– For +ve precision : BigDecimaling point number.

代码 #1： floor() 方法示例

# Ruby code for floor() method
  
# loading BigDecimal
require 'bigdecimal'
  
# declaring BigDecimal
a = 42.1**13
  
# declaring BigDecimal
b = -BigDecimal("10")
  
# declaring BigDecimal
c = -(22 ** 7.1) * 10
  
# floor value of a
puts "floor value of a : #{a.floor}\n\n"
  
# floor value of b
puts "floor value of b : #{b.floor}\n\n"
  
# floor value of c
puts "floor value of c : #{c.floor}\n\n"

输出 ：

floor value of a : 1305170490200643862528

floor value of b : -10

floor value of c : -33978252068

代码 #2： floor() 方法示例

# Ruby code for floor() method
  
# loading BigDecimal
require 'bigdecimal'
  
# declaring BigDecimal
a = 12**12 - 27
  
# declaring BigDecimal
b = BigDecimal('10')-(22 ** 7.1) ** 10
  
# declaring BigDecimal
c = BigDecimal('-3')
  
  
# floor value of a
puts "floor value of a : #{a.floor}\n\n"
  
# floor value of b
puts "floor value of b : #{b.floor}\n\n"
  
# floor value of c
puts "floor value of c : #{c.floor}\n\n"

输出 ：

floor value of a : 8916100448229

floor value of b : -205121100730586399999999999999999999999999999999999999999999999999999999999999999999999999999990

floor value of c : -3