diff options
Diffstat (limited to 'mcs/class/Mono.C5/C5/Random.cs')
| -rw-r--r-- | mcs/class/Mono.C5/C5/Random.cs | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/mcs/class/Mono.C5/C5/Random.cs b/mcs/class/Mono.C5/C5/Random.cs deleted file mode 100644 index 89a8d720a5d..00000000000 --- a/mcs/class/Mono.C5/C5/Random.cs +++ /dev/null @@ -1,174 +0,0 @@ -#if NET_2_0 -/*
- Copyright (c) 2003-2006 Niels Kokholm and Peter Sestoft
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
-*/
-using System;
-using System.Diagnostics;
-using SCG = System.Collections.Generic;
-namespace C5
-{
- /// <summary>
- /// A modern random number generator based on G. Marsaglia:
- /// Seeds for Random Number Generators, Communications of the
- /// ACM 46, 5 (May 2003) 90-93; and a posting by Marsaglia to
- /// comp.lang.c on 2003-04-03.
- /// </summary>
- public class C5Random : Random
- {
- private uint[] Q = new uint[16];
-
- private uint c = 362436, i = 15;
-
-
- private uint Cmwc()
- {
- ulong t, a = 487198574UL;
- uint x, r = 0xfffffffe;
-
- i = (i + 1) & 15;
- t = a * Q[i] + c;
- c = (uint)(t >> 32);
- x = (uint)(t + c);
- if (x < c)
- {
- x++;
- c++;
- }
-
- return Q[i] = r - x;
- }
-
-
- /// <summary>
- /// Get a new random System.Double value
- /// </summary>
- /// <returns>The random double</returns>
- public override double NextDouble()
- {
- return Cmwc() / 4294967296.0;
- }
-
-
- /// <summary>
- /// Get a new random System.Double value
- /// </summary>
- /// <returns>The random double</returns>
- protected override double Sample()
- {
- return NextDouble();
- }
-
-
- /// <summary>
- /// Get a new random System.Int32 value
- /// </summary>
- /// <returns>The random int</returns>
- public override int Next()
- {
- return (int)Cmwc();
- }
-
-
- /// <summary>
- /// Get a random non-negative integer less than a given upper bound
- /// </summary>
- /// <exception cref="ArgumentException">If max is negative</exception>
- /// <param name="max">The upper bound (exclusive)</param>
- /// <returns></returns>
- public override int Next(int max)
- {
- if (max < 0)
- throw new ArgumentException("max must be non-negative");
-
- return (int)(Cmwc() / 4294967296.0 * max);
- }
-
-
- /// <summary>
- /// Get a random integer between two given bounds
- /// </summary>
- /// <exception cref="ArgumentException">If max is less than min</exception>
- /// <param name="min">The lower bound (inclusive)</param>
- /// <param name="max">The upper bound (exclusive)</param>
- /// <returns></returns>
- public override int Next(int min, int max)
- {
- if (min > max)
- throw new ArgumentException("min must be less than or equal to max");
-
- return min + (int)(Cmwc() / 4294967296.0 * (max - min));
- }
-
- /// <summary>
- /// Fill a array of byte with random bytes
- /// </summary>
- /// <param name="buffer">The array to fill</param>
- public override void NextBytes(byte[] buffer)
- {
- for (int i = 0, length = buffer.Length; i < length; i++)
- buffer[i] = (byte)Cmwc();
- }
-
-
- /// <summary>
- /// Create a random number generator seed by system time.
- /// </summary>
- public C5Random() : this(DateTime.Now.Ticks)
- {
- }
-
-
- /// <summary>
- /// Create a random number generator with a given seed
- /// </summary>
- /// <exception cref="ArgumentException">If seed is zero</exception>
- /// <param name="seed">The seed</param>
- public C5Random(long seed)
- {
- if (seed == 0)
- throw new ArgumentException("Seed must be non-zero");
-
- uint j = (uint)(seed & 0xFFFFFFFF);
-
- for (int i = 0; i < 16; i++)
- {
- j ^= j << 13;
- j ^= j >> 17;
- j ^= j << 5;
- Q[i] = j;
- }
-
- Q[15] = (uint)(seed ^ (seed >> 32));
- }
-
- /// <summary>
- /// Create a random number generator with a specified internal start state.
- /// </summary>
- /// <exception cref="ArgumentException">If Q is not of length exactly 16</exception>
- /// <param name="Q">The start state. Must be a collection of random bits given by an array of exactly 16 uints.</param>
- public C5Random(uint[] Q)
- {
- if (Q.Length != 16)
- throw new ArgumentException("Q must have length 16, was " + Q.Length);
- Array.Copy(Q, this.Q, 16);
- }
- }
-} -#endif |