Re: Floats and %d

[Dirk Laurie <dirk.laurie@...>]

2015-07-21 6:49 GMT+02:00 Tim Hill <drtimhill@gmail.com>:

>> On Jul 20, 2015, at 6:59 PM, Dirk Laurie <dirk.laurie@gmail.com> wrote:
>If you view string.format() as a thin wrapper for sprintf(), then it’s unlikely to
> change.

It's not that thin. There is a separate case for every specifier. At present
the following are all treated the same.

        case 'd': case 'i':
        case 'o': case 'u': case 'x': case 'X': {
          lua_Integer n = luaL_checkinteger(L, arg);
          addlenmod(form, LUA_INTEGER_FRMLEN);
          nb = sprintf(buff, form, n);
          break;
        }

> I doubt a re-write of sprintf() is high on Roberto’s todo list. Though is
> IS quite high on my list, I wonder if others here would be interested
> in such a facility?

The OP's problem can be solved with something much less ambitious.
Replace the first line above by:

      case 'd':
          lua_Integer n = (lua_Integer)luaL_checknumber(L, arg);
          addlenmod(form, LUA_INTEGER_FRMLEN);
          nb = sprintf(buff, form, (n);
          break;
      case 'i':

My question was: which of the other five cases should also be
treated like case 'd?