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#include <linux/types.h>

void * memcpy(void * to, const void * from, size_t n)

{

  void *xto = to;

  size_t temp;

  if (!n)

    return xto;

  if ((long) to & 1)

    {

      char *cto = to;

      const char *cfrom = from;

      *cto++ = *cfrom++;

      to = cto;

      from = cfrom;

      n--;

    }

  if (n > 2 && (long) to & 2)

    {

      short *sto = to;

      const short *sfrom = from;

      *sto++ = *sfrom++;

      to = sto;

      from = sfrom;

      n -= 2;

    }

  temp = n >> 2;

  if (temp)

    {

      long *lto = to;

      const long *lfrom = from;

      temp--;

      do

        *lto++ = *lfrom++;

      while (temp--);

      to = lto;

      from = lfrom;

    }

  if (n & 2)

    {

      short *sto = to;

      const short *sfrom = from;

      *sto++ = *sfrom++;

      to = sto;

      from = sfrom;

    }

  if (n & 1)

    {

      char *cto = to;

      const char *cfrom = from;

      *cto = *cfrom;

    }

  return xto;

}