Detect Circular Pattern Match

Code

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

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    
    uint16_t left_rotation = 0x0000;
    uint16_t right_rotation = 0x0000;

    for(uint8_t i=0; i<16; i++)
    {
        // get the ith right rotation
        right_rotation = (reg>>i) | (reg<<(16-i));

        // get the ith left rotation
        left_rotation = (reg<<i) | (reg>>(16-i));

        // if any ith rotation matched the target number
        if(right_rotation == target || left_rotation==target)
        {
            return 1;
        }
    }

    // else 
    return 0;
}

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

Solving Approach