On Monday, 30 June 2014 at 19:15:44 UTC, Walter Bright wrote:
On 6/30/2014 11:10 AM, Sean Kelly wrote:
If your liquid assets are represented in dollars, yes. But
this
is really just a display issue. The amounts could easily be
stored in a floating point representation and rounded when
reporting is done.
But if you round only for display purposes (and for sending
statements to a customer), the customer can easily wind up with
accounts that don't balance to the penny.
And in those cases, rounding occurs at the proper points to
ensure that things match whatever on-paper accounting you might
have done. "Reporting" in this instance may actually mean
writing data to a ledger somewhere. My point was that
effectively all of the math that's done in these systems is
floating-point. The fixed-point conversions occur at
serialization points.
