Compress Interleaved Bits Reverse Bit Spreading

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

uint8_t compress_bits(uint16_t val) {
    uint8_t i=0,v,m;

    while(i<=7){
        v = (val>>(2*i)) & 1;
        m = m | (v<<i);
        i++;
    }
    return m;
}

int main() {
    uint16_t val;
    scanf("%hu", &val);

    uint8_t result = compress_bits(val);
    printf("%u", result);
    return 0;
}