On 23 Aug, 21:55, James Harris <james.harri...@googlemail.com> wrote:
... > > However for floating point you > > need at least three letters because a floating point number has > > three parts: the fixed point point, the exponent base, and the > > exponent. Now we can represent the radices of the individual > > parts with the 'r'scheme, e.g., 2r101001, but we need separate > > letters to designate the exponent base and the exponent. B and E > > are the obvious choices, though we want to be careful about a > > confusion with 'b' in hex. For example, using 'R', > > > 3R20.1B2E16Rac > > Ooh err! > > > is 20.1 in trinary (6 1/3) times 2**172 (hex ac). > > > I grant that this example looks a bit gobbledegookish, > > You think? :-) > > > but normal > > usage would be much simpler. The notation doesn't handle > > balanced trinary; however I opine that balanced trinary requires > > special notation. > > When the programmer needs to construct such values how about allowing > him or her to specify something like > > (20.1 in base 3) times 2 to the power of 0xac > > Leaving out how to specify (20.1 in base 3) for now this could be > > (20.1 in base 3) * 2 ** 0xac Using the suggestion from another post would convert this to 0.(3:20.1) * 2 ** 0xac > > The compiler could convert this to a constant. -- http://mail.python.org/mailman/listinfo/python-list
