cd7cda5836
* Mark all Fractions classes as internal * Rename the Fractions namespace to k8s.Internal.Fractions
82 lines
2.9 KiB
C#
82 lines
2.9 KiB
C#
using System;
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using System.ComponentModel;
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using System.Numerics;
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using System.Runtime.InteropServices;
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using k8s.Internal.Fractions.TypeConverters;
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namespace k8s.Internal.Fractions {
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/// <summary>
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/// A mathematical fraction. A rational number written as a/b (a is the numerator and b the denominator).
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/// The data type is not capable to store NaN (not a number) or infinite.
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/// </summary>
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[TypeConverter(typeof (FractionTypeConverter))]
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[StructLayout(LayoutKind.Sequential)]
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internal partial struct Fraction : IEquatable<Fraction>, IComparable, IComparable<Fraction>, IFormattable {
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private static readonly BigInteger MIN_DECIMAL = new BigInteger(decimal.MinValue);
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private static readonly BigInteger MAX_DECIMAL = new BigInteger(decimal.MaxValue);
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private static readonly Fraction _zero = new Fraction(BigInteger.Zero, BigInteger.Zero, FractionState.IsNormalized);
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private static readonly Fraction _one = new Fraction(BigInteger.One, BigInteger.One, FractionState.IsNormalized);
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private static readonly Fraction _minus_one = new Fraction(BigInteger.MinusOne, BigInteger.One, FractionState.IsNormalized);
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private readonly BigInteger _denominator;
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private readonly BigInteger _numerator;
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private readonly FractionState _state;
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/// <summary>
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/// The numerator.
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/// </summary>
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public BigInteger Numerator => _numerator;
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/// <summary>
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/// The denominator
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/// </summary>
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public BigInteger Denominator => _denominator;
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/// <summary>
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/// <c>true</c> if the value is positive (greater than or equal to 0).
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/// </summary>
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public bool IsPositive => _numerator.Sign == 1 && _denominator.Sign == 1 ||
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_numerator.Sign == -1 && _denominator.Sign == -1;
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/// <summary>
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/// <c>true</c> if the value is negative (lesser than 0).
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/// </summary>
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public bool IsNegative => _numerator.Sign == -1 && _denominator.Sign == 1 ||
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_numerator.Sign == 1 && _denominator.Sign == -1;
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/// <summary>
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/// <c>true</c> if the fraction has a real (calculated) value of 0.
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/// </summary>
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public bool IsZero => _numerator.IsZero || _denominator.IsZero;
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/// <summary>
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/// The fraction's state.
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/// </summary>
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public FractionState State => _state;
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/// <summary>
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/// A fraction with the reduced/simplified value of 0.
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/// </summary>
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public static Fraction Zero => _zero;
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/// <summary>
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/// A fraction with the reduced/simplified value of 1.
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/// </summary>
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public static Fraction One => _one;
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/// <summary>
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/// A fraction with the reduced/simplified value of -1.
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/// </summary>
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public static Fraction MinusOne => _minus_one;
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}
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}
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