64 Bit Version of Random<\/p>\n\n\n\n
using System;\nusing System.Runtime.InteropServices;\nusing System.Security.Cryptography;\n[Serializable]\npublic class Random64d : RandomNumberGenerator\n{\n private const double DBi = 1.0 \/ 9223372036854775807;\n private const double DBui = 1.0 \/ ulong.MaxValue;\n private readonly Random _r1;\n private readonly Random _r2;\n [NonSerialized] private readonly RNGCryptoServiceProvider _rng = new RNGCryptoServiceProvider();\n private RNumber _rNumber;\n public Random64d() : this(((long) (uint) Environment.TickCount << 32) | (uint) Environment.TickCount)\n {\n }\n public Random64d(long Seed)\n {\n var Seed0 = (int) (((Seed ^ 0x86B28CAB) << 16) & 0x7fffffff);\n var Seed1 = (int) (Seed & 0x7fffffff);\n _r1 = new Random(Seed0);\n _r2 = new Random(Seed1);\n }\n public long InternalSample()\n {\n _rNumber.n1 = _r1.Next();\n _rNumber.n2 = _r2.Next();\n return _rNumber.total;\n }\n private double GetSampleForLargeRange()\n {\n var value = InternalSample();\n if (InternalSample() % 2 == 0)\n value = -value;\n return (value + 4611686018427387903.0) \/ 9223372036854775807.0;\n }\n private double Sample()\n {\n return InternalSample() * DBi;\n }\n public long Next()\n {\n return InternalSample();\n }\n public long Next(long minValue, long maxValue)\n {\n if (minValue > maxValue)\n throw new ArgumentException(\"maxValue must be greater than or equal to minValue\");\n var num = (ulong) maxValue - (ulong) minValue;\n if (num <= long.MaxValue)\n return (long) (Sample() * num) + minValue;\n return (long) ((ulong) (GetSampleForLargeRange() * num) + (ulong) minValue);\n }\n public ulong Next(ulong minValue, ulong maxValue)\n {\n if (minValue > maxValue)\n throw new ArgumentException(\"maxValue must be greater than or equal to minValue\");\n var num = maxValue - minValue;\n return (ulong) (InternalSample() * DBui * num) + minValue;\n }\n public long Next(long maxValue)\n {\n if (maxValue < 0)\n throw new ArgumentException(\"maxValue must be greater than zero.\");\n return (long) (Sample() * maxValue);\n }\n public ulong Next(ulong maxValue)\n {\n return (ulong) (InternalSample() * DBui * maxValue);\n }\n public double NextDouble()\n {\n return Sample();\n }\n public byte[] GetNextByteArray(int size)\n {\n var ba = new byte[size];\n _rng.GetBytes(ba);\n return ba;\n }\n public byte[] GetNextByteArrayFn(int size)\n {\n var ba = new byte[size];\n for (var i = 0; i < size; ++i)\n ba[i] = (byte) Next(0, 256);\n return ba;\n }\n public char[] GetNextCharArray(int size)\n {\n var ca = new char[size];\n for (var i = 0; i < size; ++i)\n ca[i] = (char)Next(32, 128);\n return ca;\n }\n public string GetRandomString(int minLen, int maxLen)\n {\n if (minLen == maxLen)\n return new string(GetNextCharArray(minLen));\n return new string(GetNextCharArray((int) Next(minLen, maxLen)));\n }\n public override void GetBytes(byte[] data)\n {\n if (data == null)\n throw new ArgumentException(\"The buffer cannot be null.\");\n _rng.GetBytes(data);\n }\n [StructLayout(LayoutKind.Explicit, Size = 8, Pack = 1)]\n [Serializable]\n public struct RNumber\n {\n [FieldOffset(0)] public long n1;\n [FieldOffset(4)] public long n2;\n [FieldOffset(0)] public long total;\n }\n}<\/pre>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
64 Bit Version of Random<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[36,38,37,39],"_links":{"self":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/92"}],"collection":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/comments?post=92"}],"version-history":[{"count":2,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/92\/revisions"}],"predecessor-version":[{"id":94,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/posts\/92\/revisions\/94"}],"wp:attachment":[{"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/media?parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/categories?post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/michaeljohnsteiner.com\/index.php\/wp-json\/wp\/v2\/tags?post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}