Ruby Float prev_float()方法及示例

Float prev_float()是一个float类方法，用于返回浮点数的前一个表示。

语法： float.prev_float()

参数： 要传递的浮点数

返回浮点数的上一个表示法。

例子 #1 :

# Ruby code for prev_float() method
  
# Initializing value
a = 26.00/ 3
b = 8.0999
c = 3 + 105.003
  
# Printing Result
puts "previous Floating Point Number : #{a.prev_float}\n\n"
puts "previous Floating Point Number : #{b.prev_float}\n\n"
puts "previous Floating Point Number : #{c.prev_float}\n\n"

输出:

previous Floating Point Number : 8.666666666666664

previous Floating Point Number : 8.099899999999998

previous Floating Point Number : 108.00299999999999

例子#2 。

# Ruby code for next_float() method
  
# Initializing value
a = 26.00
b = 8.0
  
# Printing result
puts "previous Floating Point Number : #{a.next_float}\n\n"
puts "previous Floating Point Number : #{b.prev_float}\n\n"

输出:

previous Floating Point Number : 26.000000000000004

previous Floating Point Number : 7.999999999999999