Function luaU_header

third-party/lua-5.2.4/src/lundump.c:244–258

* make header for precompiled chunks * if you change the code below be sure to update LoadHeader and FORMAT above * and LUAC_HEADERSIZE in lundump.h */

* and LUAC_HEADERSIZE in lundump.h
*/
void luaU_header (lu_byte* h)
{
 int x=1;
 memcpy(h,LUA_SIGNATURE,sizeof(LUA_SIGNATURE)-sizeof(char));
 h+=sizeof(LUA_SIGNATURE)-sizeof(char);
 *h++=cast_byte(VERSION);
 *h++=cast_byte(FORMAT);
 *h++=cast_byte(*(char*)&x);			/* endianness */
 *h++=cast_byte(sizeof(int));
 *h++=cast_byte(sizeof(size_t));
 *h++=cast_byte(sizeof(Instruction));
 *h++=cast_byte(sizeof(lua_Number));
 *h++=cast_byte(((lua_Number)0.5)==0);		/* is lua_Number integral? */
 memcpy(h,LUAC_TAIL,sizeof(LUAC_TAIL)-sizeof(char));
}