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/*
* 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)
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