Chapter 2, Problem 2.68HW

Explanation of Solution

Function definition for “lower_one_mask()” function:

The implementation for “lower_one_mask()” function is given below:

//Header file

#include <stdio.h>

#include <assert.h>

//Function definition for lower one with mask

int lower_one_mask(int n)

{

//Determine the value of "w".

int wValue = sizeof(int) << 3;

/* Return the given value by using "-1 >> (wValue - n)" */

return (unsigned) -1 >> (wValue - n);

}

//Main function

int main(int argc, char* argv[])

{

/* Call lower_one_mask with checking value using assert function */

assert(lower_one_mask(6) == 0x3F);

/* Call lower_one_mask with checking value using assert function */

assert(lower_one_mask(21) == 0x1FFFFF);

/* Call lower_one_mask with ch...