str_cpyb.c

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#include "str.h"

unsigned int str_copyb(register char *s,register char *t,unsigned int max)
{
  register int len;

  len = 0;

  while (max-- > 0) {
    if (!(*s = *t)) return len; ++s; ++t; ++len;
    if (!(*s = *t)) return len; ++s; ++t; ++len;
    if (!(*s = *t)) return len; ++s; ++t; ++len;
    if (!(*s = *t)) return len; ++s; ++t; ++len;
  }

  return len;
}