Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    uint16_t y = 0;
    uint16_t reg = val;
    if (val & 1 << 7)
        y |= 1 << 14;
    if (val & 1 << 6)
        y |= 1 << 12;
    if (val & 1 << 5)
        y |= 1 << 10;
    if (val & 1 << 4)
        y |= 1 << 8;
    if (val & 1 << 3)
        y |= 1 << 6;
    if (val & 1 << 2)
        y |= 1 << 4;
    if (val & 2)
        y |= 1 << 2;
    if (val & 1)
        y |= 1;
    return y;
}

int main() {
    uint8_t val;
    scanf("%hhu", &val);

    uint16_t result = spread_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach