unsigned int lzo_crc32(unsigned int c, const unsigned char* buf, unsigned int len)
{
unsigned int crc;
#undef table
#if 1
# define table lzo_crc32_table
#else
const unsigned int * table = lzo_crc32_table;
#endif
if (buf == 0)
return 0;
crc = (c & LZO_UINT32_C(0xffffffff)) ^ LZO_UINT32_C(0xffffffff);
if (len >= 16) do
{
LZO_DO16(buf,0);
buf += 16;
len -= 16;
} while (len >= 16);
if (len != 0) do
{
LZO_DO1(buf,0);
buf += 1;
len -= 1;
} while (len > 0);
return crc ^ LZO_UINT32_C(0xffffffff);
#undef table
}
lzo_crc32(lzo_uint32 c, const lzo_bytep buf, lzo_uint len)
{
lzo_uint32 crc;
#undef table
#if 1
# define table lzo_crc32_table
#else
const lzo_uint32 * table = lzo_crc32_table;
#endif
if (buf == NULL)
return 0;
crc = (c & LZO_UINT32_C(0xffffffff)) ^ LZO_UINT32_C(0xffffffff);
if (len >= 16) do
{
LZO_DO16(buf,0);
buf += 16;
len -= 16;
} while (len >= 16);
if (len != 0) do
{
LZO_DO1(buf,0);
buf += 1;
len -= 1;
} while (len > 0);
return crc ^ LZO_UINT32_C(0xffffffff);
#undef table
}
// We are really paranoid here - LZO should either fail
// at startup or not at all.
//
// Because of inlining much of these functions evaluates to nothing.
//
// And while many of the tests seem highly obvious and redundant they are
// here to catch compiler/optimizer bugs. Yes, these do exist.
************************************************************************/
#if !defined(__LZO_IN_MINILZO)
#define LZO_WANT_ACC_CHK_CH 1
#undef LZOCHK_ASSERT
#include "lzo_supp.h"
LZOCHK_ASSERT((LZO_UINT32_C(1) << (int)(8*sizeof(LZO_UINT32_C(1))-1)) > 0)
LZOCHK_ASSERT_IS_SIGNED_T(lzo_int)
LZOCHK_ASSERT_IS_UNSIGNED_T(lzo_uint)
#if !(__LZO_UINTPTR_T_IS_POINTER)
LZOCHK_ASSERT_IS_UNSIGNED_T(lzo_uintptr_t)
#endif
LZOCHK_ASSERT(sizeof(lzo_uintptr_t) >= sizeof(lzo_voidp))
LZOCHK_ASSERT_IS_UNSIGNED_T(lzo_xint)
#endif
#undef LZOCHK_ASSERT
/***********************************************************************
//
************************************************************************/
