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How to get values with the power of two using the Euphoria Method

NDUKWE CHIDERA K.

Overview

The math library in Euphoria is very large and understandably so. Programs involve a lot of arithmetic evaluations* and *mathematical computations. Because of this, the Euphoria language comes with different math methods to execute several regular math operations.

In this shot, we shall take a look at a function that checks if the integer is a power of two or not.

What is the powof2() function?

Before digging into this function, let’s understand what the power of 2 mathematically means.

A number is a power of 2 if that number can be achieved by exponentiating the integer 2 to any number ranging from zero to any number.

The powof2() method checks if the number provided can be achieved by exponentiating 2 to any value. This method can be used anywhere in our code. To do this, we add include std/math.e at the top end of our code.

Syntax

powof2(value)

Parameter

  • value: This parameter can be an atom or a sequence. This means the value parameter is of the object data type. It is the value to be checked for the power of two.

Return value

This function returns either 1 or 0. It returns 1 when the value checked is not a power of two.


include std/math.e

--start a for loop
for i = 1 to 16 do

--print the return value
  ? {i, powof2(i)} 

  --end the for loop
end for
Code exmaple of powof2() function

Explanation

  • Line 2: We include the math library.

  • Line 4, 7 and 10: These are all comments.

  • Line 5: A for loop is started and executes the action codes till the counter i— which starts from 1— is equal to 16.

  • Line 8: We use the powof2() function and print the returned value to the screen.

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