Ruby BigDecimal round()用法及代码示例

BigDecimal＃round()：round()是BigDecimal类方法，该方法将Big十进制四舍五入到最接近的整数。

用法：BigDecimal.round()

参数：BigDecimal值

返回：将大十进制四舍五入到最接近的整数。

示例1:

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

输出：

BigDecimal round example : 1305170490200643862528

BigDecimal round example : -10

BigDecimal round example : -33978252068

示例2:

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

输出：


BigDecimal round example : 8916100448229

BigDecimal round example : -205121100730586399999999999999999999999999999999999999999999999999999999999999999999999999999990

BigDecimal round example : -3

相关用法

注：本文由纯净天空筛选整理自mayank5326大神的英文原创作品 Ruby | BigDecimal round() function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。