/* * Copyright (C) 2006-2007 Axis Communications AB * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include <string.h> char *strncpy(char *dest, const char *src, size_t count) { char *ret = dest; unsigned long himagic = 0x80808080L; unsigned long lomagic = 0x01010101L; while (count && (unsigned long)src & (sizeof src - 1)) { count--; if (!(*dest++ = *src++)) { goto finalize; } } while (count >= sizeof (unsigned long)) { unsigned long value = *(unsigned long*)src; unsigned long magic; if ((magic = (value - lomagic) & himagic)) { if (magic & ~value) { break; } } *(unsigned long*)dest = value; dest += sizeof (unsigned long); src += sizeof (unsigned long); count -= sizeof (unsigned long); } while (count) { count--; if (!(*dest++ = *src++)) break; } finalize: if (count) { memset(dest, '\0', count); } return ret; } libc_hidden_def(strncpy)