Bit copy function

bit_copy.c

#include <stdlib.h>
#include <stdio.h>


int copy_bit(int src, int dst, int pos)
{
    int shifted = (src >> pos) & 0b1;
    if (shifted != 0)
    {
        dst |= 1UL << pos;
        return dst;
    }
    else
    {
        dst &= ~(1UL << pos);
        return dst;
    }
}

#ifndef RunTests
int main()
{
    printf("Actual %d: expected is 4\n", copy_bit(7, 12, 3));
    printf("Actual %d: expected is 14\n", copy_bit(7, 12, 1));
    printf("Actual %d: expected is 13\n", copy_bit(7, 12, 0));
}
#endif