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/* bcopy -- copy memory regions of arbitary length

/* bcopy -- copy memory regions of arbitary length

@deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length})

@deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length})

Copies @var{length} bytes from memory region @var{in} to region

Copies @var{length} bytes from memory region @var{in} to region

@var{out}.  The use of @code{bcopy} is deprecated in new programs.

@var{out}.  The use of @code{bcopy} is deprecated in new programs.

@end deftypefn

@end deftypefn

*/

*/

#include <stddef.h>

#include <stddef.h>

void

void

bcopy (const void *src, void *dest, size_t len)

bcopy (const void *src, void *dest, size_t len)

{

{

  if (dest < src)

  if (dest < src)

    {

    {

      const char *firsts = (const char *) src;

      const char *firsts = (const char *) src;

      char *firstd = (char *) dest;

      char *firstd = (char *) dest;

      while (len--)

      while (len--)

        *firstd++ = *firsts++;

        *firstd++ = *firsts++;

    }

    }

  else

  else

    {

    {

      const char *lasts = (const char *)src + (len-1);

      const char *lasts = (const char *)src + (len-1);

      char *lastd = (char *)dest + (len-1);

      char *lastd = (char *)dest + (len-1);

      while (len--)

      while (len--)

        *lastd-- = *lasts--;

        *lastd-- = *lasts--;

    }

    }

}

}