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Last change
on this file since 3126 was 2, checked in by bird, 23 years ago |
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Initial revision
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Property cvs2svn:cvs-rev
set to
1.1
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Property svn:eol-style
set to
native
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Property svn:executable
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*
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File size:
579 bytes
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| 1 | /* bcopy -- copy memory regions of arbitary length
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| 2 |
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| 3 | @deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length})
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| 4 |
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| 5 | Copies @var{length} bytes from memory region @var{in} to region
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| 6 | @var{out}. The use of @code{bcopy} is deprecated in new programs.
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| 7 |
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| 8 | @end deftypefn
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| 9 |
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| 10 | */
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| 11 |
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| 12 | void
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| 13 | bcopy (src, dest, len)
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| 14 | register char *src, *dest;
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| 15 | int len;
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| 16 | {
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| 17 | if (dest < src)
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| 18 | while (len--)
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| 19 | *dest++ = *src++;
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| 20 | else
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| 21 | {
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| 22 | char *lasts = src + (len-1);
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| 23 | char *lastd = dest + (len-1);
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| 24 | while (len--)
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| 25 | *(char *)lastd-- = *(char *)lasts--;
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| 26 | }
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| 27 | }
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