Ruby | Numeric arg() function

The arg() is an inbuilt method in Ruby returns 0 if the number is positive, else it returns a float value which is equal to pi.

Syntax: num.arg()

Parameters: The function needs a number.



Return Value: It returns 0 if the number is positive, else it returns a float value which is equal to pi. .

Example 1:

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# Ruby program for arg() method in Matrix
  
# Initialize a number 
num = -19 
  
# Prints arg() of num
puts  num.arg() 

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Output:

3.141592653589793

Example 2:

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# Ruby program for arg() method in Matrix
  
# Initialize a number 
num = 100
  
# Prints arg() of num
puts  num.arg() 

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Output:

0


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