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big: Timed factorial.

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This commit is contained in:
Jeroen van Rijn
2021-08-11 20:59:52 +02:00
parent a27612ec6a
commit 627872db97
4 changed files with 35 additions and 24 deletions
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core/math/big/example.odin
+19 -6
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@@ -111,17 +111,30 @@ print :: proc(name: string, a: ^Int, base := i8(10), print_name := false, newlin
}
demo :: proc() {
err: Error;
as: string;
defer delete(as);
a, b, c, d, e, f := &Int{}, &Int{}, &Int{}, &Int{}, &Int{}, &Int{};
defer destroy(a, b, c, d, e, f);
s := time.tick_now();
err = choose(a, 65535, 255);
Timings[.choose].t += time.tick_since(s); Timings[.choose].c += 1;
N :: 5_000;
print("65535 choose 255", a, 10, true, true, true);
fmt.printf("Error: %v\n", err);
s := time.tick_now();
err = factorial(a, N);
Timings[.factorial].t += time.tick_since(s); Timings[.factorial].c += 1;
if err != .None {
fmt.printf("factorial(%v) returned %v\n", N, err);
}
s = time.tick_now();
as, err = itoa(a, 16);
Timings[.itoa].t += time.tick_since(s); Timings[.itoa].c += 1;
if err != .None {
fmt.printf("itoa(factorial(%v), 16) returned %v\n", N, err);
}
fmt.printf("factorial(%v): %v (first 10 hex digits)\n", N, as[:10]);
}
main :: proc() {