Function l_strton

third-party/lua-5.5.0/src/lvm.c:91–101

** Try to convert a value from string to a number value. ** If the value is not a string or is a string not representing ** a valid numeral (or if coercions from strings to numbers ** are disabled via macro 'cvt2num'), do not modify 'result' ** and return 0. */

** and return 0.
*/
static int l_strton (const TValue *obj, TValue *result) {
  lua_assert(obj != result);
  if (!cvt2num(obj))  /* is object not a string? */
    return 0;
  else {
    TString *st = tsvalue(obj);
    size_t stlen;
    const char *s = getlstr(st, stlen);
    return (luaO_str2num(s, result) == stlen + 1);
  }
}


/*