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Code Issues

(#33) Add Random.NextDouble(double, double)

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Oliver Booth 2021-03-07 16:00:54 +00:00
parent 34cead7e02
commit 9ebff198a0
1 changed files with 29 additions and 0 deletions
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29
X10D/src/RandomExtensions/RandomExtensions.cs
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@ -54,6 +54,35 @@ namespace X10D.RandomExtensions
return random.NextDouble() >= 0.5;
}
/// <summary>
/// Returns a random double-precision floating point number that is within a specified range.
/// </summary>
/// <param name="random">The <see cref="System.Random" /> instance.</param>
/// <param name="minValue">The inclusive lower bound of the random number returned.</param>
/// <param name="maxValue">
/// The inclusive upper bound of the random number returned. This value must be greater than or equal to
/// <paramref name="minValue" />.
/// </param>
/// <returns>
/// A random double-precision floating point number between <paramref name="minValue" /> and
/// <paramref name="maxValue" />.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="random" /> is <see langword="null" />.</exception>
/// <exception cref="ArgumentException"><paramref name="maxValue" /> is less than <paramref name="minValue" />.</exception>
public static double NextDouble(this Random random, double minValue, double maxValue)
{
if (random is null)
{
throw new ArgumentNullException(nameof(random));
}
if (maxValue < minValue)
{
throw new ArgumentException("maximum must be greater than or equal to minimum.");
}
return random.NextDouble() * (maxValue - minValue) + minValue;
}
/// <summary>
/// Returns a random element from <paramref name="source" /> using the <see cref="System.Random" /> instance.