Detect Circular Pattern Match

Code

#include <stdio.h>
#include <stdint.h>

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    uint32_t d=((uint16_t)reg<<16)|reg;
        for(int i=0;i<16;i++){
                uint16_t r=(d>>i)&0xffff;
                        if(r==target){
                                    return 1;
                                            }
                                                }
                                                    
                                                        
                                                            return 0;
                                                            }

int main() {
    uint16_t reg, target;
    scanf("%hu %hu", &reg, &target);
    printf("%hhu", is_circular_match(reg, target));
    return 0;
}

Solving Approach