Thread: Function return a value

I am an old assembly programmer and I am trying to teach myself c programming.

I have a function that converts a 32 bit value for endianess and I can't figure out why I do not the the corrected value returned.

This is part of my code

Code:

int process_cmd(int sock)
{
        int cmd, ccmd, res;
        int (* process_func)(int);

        RECV_INTEGER(&cmd);
        ccmd=cmd;
        BYTESWAP2(ccmd);
        printf("converted %08X\n", ccmd);

This is my function

Code:

int BYTESWAP2(ccmd)
{
      return (((ccmd&0x000000FF)<<24)+((ccmd&0x0000FF00)<<8)+
             ((ccmd&0x00FF0000)>>8)+((ccmd&0xFF000000)>>24));
}

The function input is 0158DA00 and should return 00DA5801 and yet it
after the function ccmd = 0158DA00

What am I doing wrong ?