Computation of the n-th digit of π with low memory
Pidec implements an algorithm to compute single decimals of the sequence of π digits, using only a small amount of memory.
The implementation is in the module
main.rkt, while its tests are defined in
test-main.rkt. The first one is written in Typed Racket, while the second one
is plain Racket. Apparently, Typed Racket does not support defining tests in
submodules of the same file as the implementation.
You will need to have Racket > 6.1 installed. Use Racket's built-in package manager:
$ raco pkg install pidec
Compile the code with
raco, and execute it passing a single number, which is
the starting position for 10 π decimal places.
$ raco exe bellard.rkt $ ./bellard 50
Pass the tests with
$ raco test test-bellard.rkt
These module are licensed under the MIT license. See LICENSE for details.
Sebastián Ortega (sortega)