But whatever the theoretical precision of a float, I think the thing
that makes Pd floats less precise than Max floats lies in the use of the
%g format specifier to print them out, which can result in a lower
precision than the float is capable of. This makes it possible to use
maximum precision float calculations inside of objects but not between
them. (and of course nothing stops an object using doubles internally.)
Martin
On 2012-01-13 08:11, Mathieu Bouchard wrote:
Le 2012-01-13 à 08:05:00, Mathieu Bouchard a écrit :
Neither binary nor decimal representation is more precise than the
other, it's just that their precision never matches exactly. 20 bits
is slightly less than 6 decimals, whereas 16 decimals is slightly more
than 53 bits. Thus you can only preserve precision by using slightly
too many digits, otherwise you'll have too few.
erratum : i meant that 20 bits is slightly more than 6 decimals.
20 bits = 6.0205... decimals
24 bits = 7.2247... decimals
53 bits = 15.9545... decimals
(And by «decimal» here, I mean all significant digits, not the other
meaning of the word)
______________________________________________________________________
| Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC
_______________________________________________
[email protected] mailing list
UNSUBSCRIBE and account-management ->
http://lists.puredata.info/listinfo/pd-list
_______________________________________________
[email protected] mailing list
UNSUBSCRIBE and account-management ->
http://lists.puredata.info/listinfo/pd-list
