Plan 9 from Bell Labs’s /usr/web/sources/contrib/anothy/src/lib/djb-ape/byte/byte_cr.c

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
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#include "byte.h"

void byte_copyr(register void* To,register unsigned int n,
		register const void* From)
{
  register char *to=(char*)To+n;
  register const char *from=(char*)From+n;
  for (;;) {
    if (!n) return; *--to = *--from; --n;
    if (!n) return; *--to = *--from; --n;
    if (!n) return; *--to = *--from; --n;
    if (!n) return; *--to = *--from; --n;
  }
}

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