[deliverable/binutils-gdb.git] / libiberty / bcopy.c

/* bcopy -- copy memory regions of arbitary 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
@var{out}.  The use of @code{bcopy} is deprecated in new programs.

@end deftypefn

*/

#include <stddef.h>

void
bcopy (const void *src, void *dest, size_t len)
{
  if (dest < src)
    {
      const char *firsts = (const char *) src;
      char *firstd = (char *) dest;
      while (len--)
	*firstd++ = *firsts++;
    }
  else
    {
      const char *lasts = (const char *)src + (len-1);
      char *lastd = (char *)dest + (len-1);
      while (len--)
        *lastd-- = *lasts--;
    }
}
Commit	Line	Data
	1	/* bcopy -- copy memory regions of arbitary length
	2
	3	@deftypefn Supplemental void bcopy (char @var{in}, char @var{out}, int @var{length})
	4
	5	Copies @var{length} bytes from memory region @var{in} to region
	6	@var{out}. The use of @code{bcopy} is deprecated in new programs.
	7
	8	@end deftypefn
	9
	10	*/
	11
	12	#include <stddef.h>
	13
	14	void
	15	bcopy (const void src, void dest, size_t len)
	16	{
	17	if (dest < src)
	18	{
	19	const char firsts = (const char ) src;
	20	char firstd = (char ) dest;
	21	while (len--)
	22	firstd++ = firsts++;
	23	}
	24	else
	25	{
	26	const char lasts = (const char )src + (len-1);
	27	char lastd = (char )dest + (len-1);
	28	while (len--)
	29	lastd-- = lasts--;
	30	}
	31	}