Alan Eliasen wrote:
From the queries I get, this is important to a lot of people. The
performance of BigInteger can be improved by tens or hundreds or
thousands of times (or even more in the case of certain arguments of
pow()), and should be done to make Java a more viable platform for
I hope you get this in.
Andrew Haley wrote:
You give examples of the speedup for very large bignums, but you don't say
the size of numbers at which your approach becomes faster than the current
code. Of course any asymptotic improvement helps with numbers that are
half a million decimal digits long, but where's the
Alan Eliasen wrote:
Note that my optimizations for the pow() function give vastly better
performance at even small bit sizes for many operands, as they factor
out powers of 2 in the exponent and perform these very rapidly as
bit-shifts.
Oops. I mean powers of 2 in the *base*, of
Doug,
On Thu, Jun 4, 2009 at 4:32 PM, Doug Lea d...@cs.oswego.edu wrote:
The main one is that LinkedHashMap is declared as a
subclass of HashMap. There's not
an obvious way to add insertion- or access- ordered links
to your version.
Well, it can be done by adding another index array,
I've
