lua_Integer lua_tointeger(lua_State *L, int index)
{
lua_Number d = lua_tonumber(L, index);
lua_Integer i;
lua_number2integer(i, d);
return i;
}
// - LuaValue::asInteger() --------------------------------------------------
lua_Integer LuaValue::asInteger() const
{
if (dataType_ == LUA_TNUMBER)
{
lua_Number num = (*reinterpret_cast<const lua_Number*>(&data_));
lua_Integer res;
lua_number2integer (res, num);
return res;
}
else
{
throw TypeMismatchError ("number", typeName());
}
}
LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *isnum) {
TValue n;
const TValue *o = index2addr(L, idx);
if (tonumber(o, &n)) {
lua_Integer res;
lua_Number num = nvalue(o);
lua_number2integer(res, num);
if (isnum) *isnum = 1;
return res;
}
else {
if (isnum) *isnum = 0;
return 0;
}
}
/*
* If a LUA_TNUMBER has integer value, give it.
*/
int /*bool*/ tt_integer_valued( const TValue *o, lua_Integer *ref ) {
lua_Number d;
lua_Integer i;
lua_assert( ttype(o)==LUA_TNUMBER );
lua_assert( ref );
#ifdef LNUM_COMPLEX
if (nvalue_img_fast(o)!=0) return 0;
#endif
d= nvalue_fast(o);
lua_number2integer(i, d);
if (cast_num(i) == d) {
*ref= i; return 1;
}
return 0;
}
static int read_number (lua_State *L, FILE *f) {
lua_Number d;
if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) {
#ifdef LUA_TINT
lua_Integer tmp;
lua_number2integer(tmp, d);
if (cast_num(tmp) == d)
lua_pushinteger(L, tmp);
else
#endif
lua_pushnumber(L, d);
return 1;
}
else {
lua_pushnil(L); /* "result" to be removed */
return 0; /* read fails */
}
}