Detect Circular Pattern Match

Code

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



uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    // Your code here
    //if (reg == 0 && target == 0) return 0;

    
    uint16_t mask = 0x00;
    for(uint8_t x = 0; x < 16; x++)
    {
        //compare msb of 16 bit to register
        mask = (reg & 32768);
        //left shift 1 and combine with mask
        reg = (reg << 1) | (mask >> 15);

        if (reg == 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