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Check if a Function is a Primitive Function in R Programming – is.primitive() Function
  • Last Updated : 05 Jun, 2020

is.primitive() function in R Language is used to check if a function is a primitive function, i.e. its either a built-in function or a special function.

Syntax: is.primitive(func)

Parameters:
func: Function to be checked

Example 1:

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# R program to illustrate 
# the use of is.primitive function
  
# Calling is.primitive() function
is.primitive(1)
is.primitive(is.primitive)
is.primitive(sum)
is.primitive(prod)

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Output:

[1] FALSE
[1] FALSE
[1] TRUE
[1] TRUE

Example 2:

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# R program to illustrate 
# the use of is.primitive function
  
# Sample user-defined Function
evenOdd = function(x){ 
  if(x %% 2 == 0
    return("even"
  else
    return("odd"
}  
  
# Calling is.primitive() function
is.primitive(evenOdd)

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Output:

[1] FALSE
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