On 09/06/2012 18:47, Joseph Rushton Wakeling wrote:
On Saturday, 9 June 2012 at 01:11:49 UTC, Stewart Gordon wrote:
Including it in D seems very unlikely.
Including it in Phobos, OTOH, is another matter.
My bad phrasing. Of course in Phobos.
On 09/06/12 08:25, SomeDude wrote:
I've never had any use for rational numbers as have 99% of developers I believe.
Maybe I'm overlooking something, but I see only two possible usages of them:
math packages and length quotations in the english system. Because of this, I'd
rather see them in Deimos than in Phobos.
In fact the application I had in mind was for music software, where you want to
be able to
store pitch changes in fractions of a whole tone. In that context it's
important that
adding up those changes be guaranteed to produce exact results.
e.g. if you take middle C and raise it by 1 whole tone _exactly_ you arrive at
the note
D. If you raise it by 0.99999999999999999999999999995 instead, how does your
software
reliably handle this?
By using an integer type to store pitches in such a way that the semitone is
the basic unit.
Do you compose music that makes use of demisemitones, thirds of tones, and so
on?
Stewart.
