Smallest of three integers without comparison operators | GeeksforGeeks

Write a C program to find the smallest of three integers, without using any of the comparison operators.
Method 2 (Use Bit Operations)

int min(int x, int y)

{

  return  y + ((x - y) & ((x - y) >>

            (sizeof(int) * CHAR_BIT - 1)));

}

 

/* Function to find minimum of 3 numbers x, y and z*/

int smallest(int x, int y, int z)

{

    return min(x, min(y, z));

}

Method 3 (Use Division operator)
We can also use division operator to find minimum of two numbers. If value of (a/b) is zero, then b is greater than a, else a is greater. 

int smallest(int x, int y, int z)

{

    if (!(y/x))  // Same as "if (y < x)"

        return (!(y/z))? y : z;

    return (!(x/z))? x : z;

}

Read full article from Smallest of three integers without comparison operators | GeeksforGeeks