source code
// The Computer Language Benchmarks Game
// https://salsa.debian.org/benchmarksgame-team/benchmarksgame/
//
// contributed by Michael Ganss
// derived from PHP version that was
// contributed by Oleksii Prudkyi
// port from pidigits.lua-5.lua (Mike Pall, Wim Couwenberg)
// modified by Craig Russell
// converted from GmpInteger to BigInteger by Isaac Gouy
using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
namespace PiDigits
{
class Program
{
const int DigitsPerLine = 10;
static void Main(string[] args)
{
var n = int.Parse(args[0]);
var i = 1;
foreach (var d in GenDigits().Take(n))
{
Console.Out.Write(d);
if ((i % DigitsPerLine) == 0)
Console.Out.WriteLine("\t:" + i);
i++;
}
// Pad out any trailing digits for the final line
if ((n % DigitsPerLine) > 0)
Console.Out.WriteLine(new string(' ', (DigitsPerLine - (n % DigitsPerLine))) + "\t:" + n);
}
private static IEnumerable<int> GenDigits()
{
var k = 1;
var n1 = new BigInteger(4);
var n2 = new BigInteger(3);
var d = BigInteger.One;
var u = new BigInteger();
var v = new BigInteger();
var w = BigInteger.Zero;
while (true)
{
// digit
u = BigInteger.Divide(n1, d);
v = BigInteger.Divide(n2, d);
if (BigInteger.Compare(u,v) == 0)
{
yield return (int)u;
// extract
u = BigInteger.Multiply(u, -10);
u = BigInteger.Multiply(u, d);
n1 = BigInteger.Multiply(n1, 10);
n1 = BigInteger.Add(n1, u);
n2 = BigInteger.Multiply(n2, 10);
n2 = BigInteger.Add(n2, u);
}
else
{
// produce
var k2 = k * 2;
u = BigInteger.Multiply(n1, k2 - 1);
v = BigInteger.Add(n2, n2);
w = BigInteger.Multiply(n1, k - 1);
n1 = BigInteger.Add(u, v);
u = BigInteger.Multiply(n2, k + 2);
n2 = BigInteger.Add(w, u);
d = BigInteger.Multiply(d, k2 + 1);
k++;
}
}
}
}
}
notes, command-line, and program output
NOTES:
64-bit Ubuntu quad core
.NET SDK 9.0.100
Host Version: 9.0.0
Commit: 9d5a6a9aa4
<OutputType>Exe
<TargetFramework>net9.0
<ImplicitUsings>enable
<Nullable>enable
<AllowUnsafeBlocks>true
<ServerGarbageCollection>true
<ConcurrentGarbageCollection>true
<PublishAot>false
Wed, 13 Nov 2024 23:01:29 GMT
MAKE:
cp pidigits.csharpcore-7.csharpcore Program.cs
cp Include/csharpcore/program.csproj .
mkdir obj
cp Include/csharpcore/project.assets.json ./obj
/opt/src/dotnet-sdk-9.0.100/dotnet build -c Release --use-current-runtime
Determining projects to restore...
/home/dunham/all-benchmarksgame/benchmarksgame_i53330/pidigits/tmp/program.csproj : warning NU1900: Error occurred while getting package vulnerability data: Unable to load the service index for source https://api.nuget.org/v3/index.json.
Restored /home/dunham/all-benchmarksgame/benchmarksgame_i53330/pidigits/tmp/program.csproj (in 5.93 sec).
/home/dunham/all-benchmarksgame/benchmarksgame_i53330/pidigits/tmp/program.csproj : warning NU1900: Error occurred while getting package vulnerability data: Unable to load the service index for source https://api.nuget.org/v3/index.json.
program -> /home/dunham/all-benchmarksgame/benchmarksgame_i53330/pidigits/tmp/bin/Release/net9.0/linux-x64/program.dll
Build succeeded.
/home/dunham/all-benchmarksgame/benchmarksgame_i53330/pidigits/tmp/program.csproj : warning NU1900: Error occurred while getting package vulnerability data: Unable to load the service index for source https://api.nuget.org/v3/index.json.
/home/dunham/all-benchmarksgame/benchmarksgame_i53330/pidigits/tmp/program.csproj : warning NU1900: Error occurred while getting package vulnerability data: Unable to load the service index for source https://api.nuget.org/v3/index.json.
2 Warning(s)
0 Error(s)
Time Elapsed 00:00:11.01
12.99s to complete and log all make actions
COMMAND LINE:
./bin/Release/net9.0/linux-x64/program 10000
(TRUNCATED) PROGRAM OUTPUT:
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