Set Baud Rate Field in Control Register

Code

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

uint32_t set_baud_rate(uint32_t reg, uint8_t baud) {
    uint32_t mask_low = (1u << 4) - 1u;
    uint32_t field_mask = mask_low << 8;

    uint32_t reg_cleared = reg & ~field_mask;
    uint32_t inserted = (baud & mask_low) << 8;

    return reg_cleared | inserted;
    return reg;
}

int main() {
    uint32_t reg;
    uint8_t baud;
    scanf("%u %hhu", &reg, &baud);
    printf("%u", set_baud_rate(reg, baud));
    return 0;
}

Solving Approach