File: bcopy.c

package info (click to toggle)
cpio 2.4.2-23
  • links: PTS
  • area: main
  • in suites: slink
  • size: 836 kB
  • ctags: 704
  • sloc: ansic: 7,997; makefile: 208; sh: 176
file content (19 lines) | stat: -rw-r--r-- 565 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
/* bcopy.c -- copy memory.
   Copy LENGTH bytes from SOURCE to DEST.  Does not null-terminate.
   In the public domain.
   By David MacKenzie <djm@gnu.ai.mit.edu>.  */

void
bcopy (source, dest, length)
     char *source, *dest;
     unsigned length;
{
  if (source < dest)
    /* Moving from low mem to hi mem; start at end.  */
    for (source += length, dest += length; length; --length)
      *--dest = *--source;
  else if (source != dest)
    /* Moving from hi mem to low mem; start at beginning.  */
    for (; length; --length)
      *dest++ = *source++;
}