On Sat, Mar 20, 2010 at 4:46 PM, Mark Dickinson <dicki...@gmail.com> wrote: > On Sat, Mar 20, 2010 at 11:20 PM, Greg Ewing > <greg.ew...@canterbury.ac.nz> wrote: >> * Decimal and float really belong side-by-side in the >> tower, rather than one above the other. Neither of them is >> inherently any more precise or exact than the other. > > Except that float is fixed-width (typically 53 bits of precision), > while Decimal allows a user-specified, arbitrarily large, precision; > so in that sense the two floating-point types aren't on an equal > footing.
But this doesn't really help deciding which should be positioned at the end does it? Both Fraction and Decimal can represent every float value (barring NaN/Inf). I wonder if we need to look at use cases or see what other languages do for guidance. -- --Guido van Rossum (python.org/~guido) _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
