EasySourceGenerators/MattSourceGenHelpers.Tests/TestSlowMath.cs at 0f5556c71b37f3a0054773d70bb522cfddcf9bb3 · dex3r/EasySourceGenerators · GitHub

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namespace MattSourceGenHelpers.Tests;

internal static class TestSlowMath
{
    // Pi digits string (0-indexed: position 0 = '3', position 1 = '1', position 2 = '4', ...)
    private static readonly string PiDigits =
        "31415926535897932384626433832795028841971693993751" +
        "05820974944592307816406286208998628034825342117067" +
        "98214808651328230664709384460955058223172535940812" +
        "84811174502841027019385211055596446229489549303819" +
        "64428810975665933446128475648233786783165271201909" +
        "14564856692346034861045432664821339360726024914127" +
        "37245870066063155881748815209209628292540917153643" +
        "67892590360011330530548820466521384146951941511609" +
        "43305727036575959195309218611738193261179310511854" +
        "80744623799627495673518857527248912279381830119491" +
        "29833673362440656643086021394946395224737190702179" +
        "86094370277053921717629317675238467481846766940513" +
        "20005681271452635608277857713427577896091736371787" +
        "21468440901224953430146549585371050792279689258923" +
        "54201995611212902196086403441815981362977477130996" +
        "05187072113499999983729780499510597317328160963185" +
        "95024459455346908302642522308253344685035261931188" +
        "17101000313783875288658753320838142061717766914730" +
        "35982534904287554687311595628638823537875937519577" +
        "81857780532171226806613001927876611195909216420198";

    public static int CalculatePiDecimal(int decimalNumber)
    {
        if (decimalNumber >= 0 && decimalNumber < PiDigits.Length)
            return PiDigits[decimalNumber] - '0';
        return 0;
    }
}