41 lines
1.4 KiB
C#
41 lines
1.4 KiB
C#
using System;
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namespace MBS.Framework
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{
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public static class MathExtensions
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{
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/// <summary>
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/// Multiplies a floating point value x by the number 2 raised to the exp power.
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/// </summary>
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/// <returns>The ldexp.</returns>
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/// <param name="x">The x coordinate.</param>
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/// <param name="exp">Exp.</param>
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public static float ldexp(float x, int exp)
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{
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return (float)(x * Math.Pow(2, exp));
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}
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/// <summary>
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/// Multiplies a floating point value x by the number 2 raised to the exp power.
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/// </summary>
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/// <returns>The ldexp.</returns>
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/// <param name="x">The x coordinate.</param>
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/// <param name="exp">Exp.</param>
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public static double ldexp(double x, int exp)
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{
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return (x * Math.Pow(2, exp));
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}
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/// <summary>
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/// Returns a random <see cref="long" /> between
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/// <paramref name="minValue"/> and <paramref name="maxValue" />.
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/// </summary>
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/// <returns>The random number.</returns>
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/// <param name="random">The instance of <see cref="Random" /> being extended.</param>
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/// <param name="minValue">The inclusive minimum bound of the resulting random value.</param>
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/// <param name="maxValue">The exclusive maximum bound of the resulting random value.</param>
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public static long NextLong (this Random random, long minValue = 0, long maxValue = long.MaxValue)
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{
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return (long)((random.NextDouble() * (maxValue - minValue)) + minValue);
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}
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}
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}
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