Detect Circular Pattern Match

Code

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

uint8_t is_circular_match(uint16_t reg, uint16_t target) {

    for(int i=0; i<16; i++) {
        if(reg == target) {
            return 1;
        } 
        reg = ((reg << 1 | reg >>15) & 0xFFFF);
    }
    return 0;
}

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

Solving Approach