Rotate bits of a number

#include<stdio.h> #define INT_BITS 32 /*Function to left rotate n by d bits*/ int leftRotate(int n, unsigned int d) { /* In n<<d, last d bits are 0. To put first 3 bits of n at last, do bitwise or of n<<d with n >>(INT_BITS - d) */ return (n << d)|(n >> (INT_BITS - d)); } /*Function to right rotate n by d bits*/ int rightRotate(int n, unsigned int d) { /* In n>>d, first d bits are 0. To put last 3 bits of at first, do bitwise or of n>>d with n <<(INT_BITS - d) */ return (n >> d)|(n << (INT_BITS - d)); } /* Driver program to test above functions */ int main() { int n = 16; int d = 2; printf("Left Rotation of %d by %d is ", n, d); printf("%d", leftRotate(n, d)); printf("\nRight Rotation of %d by %d is ", n, d); printf("%d", rightRotate(n, d)); getchar(); }