Though your code converts the input int to u32 when calling vpf_num_to_str. That will fail if int happens to be more than 32 bits long. Anyway, a less theoreti

Though your code converts the input int to u32 when calling vpf_num_to_str. That will fail if int happens to be more than 32 bits long. Anyway, a less theoretical bug report: Your "%d" format specifier fails to print negative numbers. :)