diff options
Diffstat (limited to 'ipl/packs/loadfuncpp/examples/factorials.icn')
| -rw-r--r-- | ipl/packs/loadfuncpp/examples/factorials.icn | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/ipl/packs/loadfuncpp/examples/factorials.icn b/ipl/packs/loadfuncpp/examples/factorials.icn new file mode 100644 index 0000000..908ea97 --- /dev/null +++ b/ipl/packs/loadfuncpp/examples/factorials.icn @@ -0,0 +1,27 @@ +procedure main () + every n := 1 to 10 do { + write (n, "! = ", memoized_factorial ( n ) ); + } + n := 135; write(n, "! = ", memoized_factorial ( n ) ); + n := 155; write(n, "! = ", memoized_factorial ( n ) ); +end +procedure memoized_factorial ( k ) + static results; + static k_limit; + static k_old; + initial { + results := [1]; + k_limit := 10 ^ 5; + k_old := 1; + } + if (k < k_limit) then { + while (k > *results) do results := results ||| list(*results) + every n := (k_old + 1) to k do { + results[n] := n * results[n - 1]; + } + k_old := k; + return results[k]; + } else { + return ((k / &e) ^ n) * sqrt(2 * &pi * n); + } +end |