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Ruby | Rational ceil() function
  • Last Updated : 06 Jan, 2020

The ceil() is an inbuilt function in Ruby returns the smallest number greater than or equal to rat with a precision of ndigits decimal digits. ndigits by default is 0. It returns a rational when ndigits is positive, otherwise returns an integer.

Syntax: rat.ceil(ndigits)

Parameters: The function accepts a number ndigits which specifies the number of digits to be rounded off. If ndigits is not given then, default value is taken to be zero.

Return Value: It returns the smallest number greater than or equal to rat with a precision of ndigits

Example 1:



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# Ruby program for ceil() method
  
# Initialize rational number 
rat1 = Rational(-4, 3)
  
# Prints the rational number
puts rat1.ceil()

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Output:

-1

Example 2:

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# Ruby program for ceil() method
  
# Initialize rational number 
rat1 = Rational('123.456')
  
# Prints the rational number
puts rat1.ceil(1)
puts rat1.ceil(-1)

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Output:

247/2
130
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