Hya,
You did not post what system your penguin is, (hardware and software) neither language (BASIC, Pascal, PL/1, PL/I, fortran, BCPL, CPL, B, Modula, Algol, prolog, LISP, COBOL, Ada, Forth...) The answer varies depending...
If you are using C, these values are defined in float.h
If you are using LISP, usually precision is infinite.
In some languages, there is not such a thing like float.
Happy Penguins!