static void LoadHeader (LoadState* S)
{
int version;
lua_Number x,tx=TEST_NUMBER;
LoadSignature(S);
version=LoadByte(S);
if (version>VERSION)
luaG_runerror(S->L,"%s too new: "
"read version %d.%d; expected at most %d.%d",
S->name,V(version),V(VERSION));
if (version<VERSION0) /* check last major change */
luaG_runerror(S->L,"%s too old: "
"read version %d.%d; expected at least %d.%d",
S->name,V(version),V(VERSION0));
S->swap=(luaU_endianness()!=LoadByte(S)); /* need to swap bytes? */
TESTSIZE(sizeof(int),"int");
TESTSIZE(sizeof(size_t), "size_t");
TESTSIZE(sizeof(Instruction), "Instruction");
TESTSIZE(SIZE_OP, "OP");
TESTSIZE(SIZE_A, "A");
TESTSIZE(SIZE_B, "B");
TESTSIZE(SIZE_C, "C");
TESTSIZE(sizeof(lua_Number), "number");
x=LoadNumber(S);
if ((long)x!=(long)tx) /* disregard errors in last bits of fraction */
luaG_runerror(S->L,"unknown number format in %s",S->name);
}
static void DumpHeader(DumpState* D)
{
DumpLiteral(LUA_SIGNATURE,D);
DumpByte(VERSION,D);
DumpByte(luaU_endianness(),D);
DumpByte(sizeof(int),D);
DumpByte(sizeof(size_t),D);
DumpByte(sizeof(Instruction),D);
DumpByte(SIZE_OP,D);
DumpByte(SIZE_A,D);
DumpByte(SIZE_B,D);
DumpByte(SIZE_C,D);
DumpByte(sizeof(lua_Number),D);
DumpNumber(TEST_NUMBER,D);
}
