Detect Circular Pattern Match

Code

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

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    uint8_t rot = 0;
    uint16_t ext_val = 0, val = 0;

    for (int i = 0; i < 16; ++i){
        ext_val = (reg >> (16 - i));
        val = reg << i;
        val |= ext_val;

        if(val & 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