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=15; i>=0; i--){
        bool MSB = reg & 0x8000;
        if(reg==target) return 1;
        reg <<= 1;
        if(MSB) reg++; 
    }
    return 0;
}

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

Solving Approach