How to return a simpler approximation of a float value in Ruby

Overview

We can return a simpler approximation of a float value by using the rationalize() method.

Syntax

# default 
float_value.rationalize
# with option
float_value.rationalize(opt)

Parameters

• float_value: This is the float value whose simple approximation we want to get.

• opt: This is an optional parameter. When this is passed, the approximation result becomes float_value-opt<= result <= float_value+opt. It means that the results are in between the subtraction of the option from the float value, and the sum of the float value and option.

Return value

This method returns a simple approximation of float_value.

Example

Explanation

In the above code snippet:

• Lines 2 to 5: We create float variables and initialize them with values.
• Lines 8 to 11: We invoke the rationalize() method on the float values.
• Lines 14 to 17: We print the results which are simple approximations to the console.