static int LoadHeader (lua_State* L, ZIO* Z)
{
int version,swap;
Number f=0,tf=TEST_NUMBER;
LoadSignature(L,Z);
version=ezgetc(L,Z);
if (version>VERSION)
luaO_verror(L,"`%.99s' too new:\n"
" read version %d.%d; expected at most %d.%d",
ZNAME(Z),V(version),V(VERSION));
if (version<VERSION0) /* check last major change */
luaO_verror(L,"`%.99s' too old:\n"
" read version %d.%d; expected at least %d.%d",
ZNAME(Z),V(version),V(VERSION));
swap=(luaU_endianess()!=ezgetc(L,Z)); /* need to swap bytes? */
TESTSIZE(sizeof(int));
TESTSIZE(sizeof(size_t));
TESTSIZE(sizeof(Instruction));
TESTSIZE(SIZE_INSTRUCTION);
TESTSIZE(SIZE_OP);
TESTSIZE(SIZE_B);
TESTSIZE(sizeof(Number));
f=LoadNumber(L,Z,swap);
if ((long)f!=(long)tf) /* disregard errors in last bit of fraction */
luaO_verror(L,"unknown number format in `%.99s':\n"
" read " NUMBER_FMT "; expected " NUMBER_FMT, ZNAME(Z),f,tf);
return swap;
}
static void DumpHeader(void* D)
{
DumpByte(ID_CHUNK,D);
DumpSig(SIGNATURE, D);
DumpByte(VERSION,D);
DumpByte(luaU_endianess(),D);
DumpByte(sizeof(int),D);
DumpByte(sizeof(size_t),D);
DumpByte(sizeof(Instruction),D);
DumpByte(SIZE_INSTRUCTION,D);
DumpByte(SIZE_OP,D);
DumpByte(SIZE_B,D);
DumpByte(sizeof(Number),D);
DumpNumber(TEST_NUMBER,D);
}
