Detect Circular Pattern Match

Code

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

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    uint16_t reg_left_rot_search = reg;
    uint16_t reg_right_rot_search = reg;
    int i=0;

    while (i<16) {
        /*Rotate left*/
        reg_left_rot_search = (reg_left_rot_search << 1) | (reg_left_rot_search >> (16 - 1));
        /*Rotate right*/
        reg_right_rot_search = (reg_right_rot_search >> 1) | (reg_right_rot_search << (16-1));
        if (reg_left_rot_search == target ||
            reg_right_rot_search == target) {
                return 1;
            }
        i++;
    }
    
    return 0;
}

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

Solving Approach