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Code Issues

Move math-related extensions to Math namespace (#7)

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Oliver Booth 2022-04-24 11:04:30 +01:00
parent 2c2de1e30e
commit b4f09e0a94
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GPG Key ID: 32A00B35503AF634
14 changed files with 442 additions and 458 deletions
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42
X10D.Tests/src/Core/ByteTests.cs
View File

@ -17,45 +17,13 @@ public class ByteTests
const byte byteMinValue = byte.MinValue; const byte byteMinValue = byte.MinValue;
const byte byteMaxValue = byte.MaxValue; const byte byteMaxValue = byte.MaxValue;
var minValueBytes = new[] { byteMinValue }; byte[] minValueBytes = {byteMinValue};
var maxValueBytes = new[] { byteMaxValue }; byte[] maxValueBytes = {byteMaxValue};
var minValueResult = byteMinValue.GetBytes(); byte[] minValueResult = byteMinValue.GetBytes();
var maxValueResult = byteMaxValue.GetBytes(); byte[] maxValueResult = byteMaxValue.GetBytes();
CollectionAssert.AreEqual(minValueBytes, minValueResult); CollectionAssert.AreEqual(minValueBytes, minValueResult);
CollectionAssert.AreEqual(maxValueBytes, maxValueResult); CollectionAssert.AreEqual(maxValueBytes, maxValueResult);
} }
}
/// <summary>
/// Tests <see cref="ByteExtensions.IsEven" />.
/// </summary>
[TestMethod]
public void IsEven()
{
const byte one = 1;
const byte two = 2;
var oneEven = one.IsEven();
var twoEven = two.IsEven();
Assert.IsFalse(oneEven);
Assert.IsTrue(twoEven);
}
/// <summary>
/// Tests <see cref="ByteExtensions.IsOdd" />.
/// </summary>
[TestMethod]
public void IsOdd()
{
const byte one = 1;
const byte two = 2;
var oneOdd = one.IsOdd();
var twoOdd = two.IsOdd();
Assert.IsTrue(oneOdd);
Assert.IsFalse(twoOdd);
}
}

43
X10D.Tests/src/Core/SByteTests.cs
View File

@ -1,43 +0,0 @@
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace X10D.Tests.Core;
/// <summary>
/// Tests for <see cref="SByteExtensions" />
/// </summary>
[CLSCompliant(false)]
[TestClass]
public class SByteTests
{
/// <summary>
/// Tests <see cref="SByteExtensions.IsEven"/>.
/// </summary>
[TestMethod]
public void IsEven()
{
const sbyte one = 1;
const sbyte two = 2;
var oneEven = one.IsEven();
var twoEven = two.IsEven();
Assert.AreEqual(false, oneEven);
Assert.AreEqual(true, twoEven);
}
/// <summary>
/// Tests <see cref="SByteExtensions.IsOdd"/>.
/// </summary>
[TestMethod]
public void IsOdd()
{
const sbyte one = 1;
const sbyte two = 2;
var oneOdd = one.IsOdd();
var twoOdd = two.IsOdd();
Assert.AreEqual(true, oneOdd);
Assert.AreEqual(false, twoOdd);
}
}

26
X10D.Tests/src/Math/ByteTests.cs
View File

@ -21,4 +21,30 @@ public class ByteTests
Assert.AreEqual(362880L, ((byte)9).Factorial()); Assert.AreEqual(362880L, ((byte)9).Factorial());
Assert.AreEqual(3628800L, ((byte)10).Factorial()); Assert.AreEqual(3628800L, ((byte)10).Factorial());
} }
[TestMethod]
public void IsEvenShouldBeCorrect()
{
const byte one = 1;
const byte two = 2;
bool oneEven = one.IsEven();
bool twoEven = two.IsEven();
Assert.IsFalse(oneEven);
Assert.IsTrue(twoEven);
}
[TestMethod]
public void IsOddShouldBeCorrect()
{
const byte one = 1;
const byte two = 2;
bool oneOdd = one.IsOdd();
bool twoOdd = two.IsOdd();
Assert.IsTrue(oneOdd);
Assert.IsFalse(twoOdd);
}
} }

30
X10D.Tests/src/Core/IsPrimeTests.cs → X10D.Tests/src/Math/IsPrimeTests.cs
View File

@ -2,19 +2,10 @@
using System.Reflection; using System.Reflection;
using System.Text; using System.Text;
using Microsoft.VisualStudio.TestTools.UnitTesting; using Microsoft.VisualStudio.TestTools.UnitTesting;
using X10D.Math;
namespace X10D.Tests.Core; namespace X10D.Tests.Math;
/// <summary>
/// Tests for <see cref="Int32Extensions.IsPrime(int)"/>.
/// </summary>
/// <remarks>
/// Tests for this extension method are delegated to their own test class because of the non-trivial requirements for
/// loading testing prime numbers.
/// </remarks>
/// <seealso cref="Int16Extensions.IsPrime(short)" />
/// <seealso cref="Int32Extensions.IsPrime(int)" />
/// <seealso cref="Int64Extensions.IsPrime(long)" />
[TestClass] [TestClass]
public class IsPrimeTests public class IsPrimeTests
{ {
@ -27,9 +18,6 @@ public class IsPrimeTests
Assert.AreEqual(1000, _primeNumbers.Count); Assert.AreEqual(1000, _primeNumbers.Count);
} }
/// <summary>
/// Asserts the primality of the first 1000 known prime numbers.
/// </summary>
[TestMethod] [TestMethod]
public void First1000Primes() public void First1000Primes()
{ {
@ -41,9 +29,6 @@ public class IsPrimeTests
} }
} }
/// <summary>
/// Asserts that all negative numbers are not prime.
/// </summary>
[TestMethod] [TestMethod]
public void Negatives() public void Negatives()
{ {
@ -54,9 +39,6 @@ public class IsPrimeTests
} }
} }
/// <summary>
/// Asserts that values 0 and 1 are not prime.
/// </summary>
[TestMethod] [TestMethod]
public void LessThan2() public void LessThan2()
{ {
@ -67,9 +49,6 @@ public class IsPrimeTests
} }
} }
/// <summary>
/// Tests the primality of the numbers 0 - 7919.
/// </summary>
[TestMethod] [TestMethod]
public void ZeroTo7919() public void ZeroTo7919()
{ {
@ -82,9 +61,6 @@ public class IsPrimeTests
} }
} }
/// <summary>
/// Tests the primality of the numbers 0 - <see cref="byte.MaxValue" />.
/// </summary>
[TestMethod] [TestMethod]
public void ZeroToByteMaxValue() public void ZeroToByteMaxValue()
{ {
@ -115,4 +91,4 @@ public class IsPrimeTests
return primes.AsReadOnly(); return primes.AsReadOnly();
} }
} }

26
X10D.Tests/src/Math/SByteTests.cs
View File

@ -23,6 +23,32 @@ public class SByteTests
Assert.AreEqual(3628800L, ((sbyte)10).Factorial()); Assert.AreEqual(3628800L, ((sbyte)10).Factorial());
} }
[TestMethod]
public void IsEvenShouldBeCorrect()
{
const sbyte one = 1;
const sbyte two = 2;
bool oneEven = one.IsEven();
bool twoEven = two.IsEven();
Assert.AreEqual(false, oneEven);
Assert.AreEqual(true, twoEven);
}
[TestMethod]
public void IsOddShouldBeCorrect()
{
const sbyte one = 1;
const sbyte two = 2;
bool oneOdd = one.IsOdd();
bool twoOdd = two.IsOdd();
Assert.AreEqual(true, oneOdd);
Assert.AreEqual(false, twoOdd);
}
[TestMethod] [TestMethod]
public void NegativeFactorialShouldThrow() public void NegativeFactorialShouldThrow()
{ {

38
X10D/src/ByteExtensions/ByteExtensions.cs
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@ -14,42 +14,4 @@ public static class ByteExtensions
{ {
return new[] { value }; return new[] { value };
} }
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsEven(this byte value)
{
return value % 2 == 0;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsOdd(this byte value)
{
return !value.IsEven();
}
/// <summary>
/// Returns a value indicating whether the current value is a prime number.
/// </summary>
/// <param name="value">The value whose primality to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is prime; otherwise, <see langword="false" />.
/// </returns>
public static bool IsPrime(this byte value)
{
return ((short)value).IsPrime();
}
} }

83
X10D/src/ByteExtensions/SByteExtensions.cs
View File

@ -1,83 +0,0 @@
using System.Diagnostics.Contracts;
using System.Runtime.CompilerServices;
namespace X10D;
/// <summary>
/// Extension methods for <see cref="sbyte" />.
/// </summary>
[CLSCompliant(false)]
public static class SByteExtensions
{
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsEven(this sbyte value)
{
return value % 2 == 0;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsOdd(this sbyte value)
{
return !value.IsEven();
}
/// <summary>
/// Returns a value indicating whether the current value is a prime number.
/// </summary>
/// <param name="value">The value whose primality to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is prime; otherwise, <see langword="false" />.
/// </returns>
public static bool IsPrime(this sbyte value)
{
return ((long)value).IsPrime();
}
/// <summary>
/// Returns an integer that indicates the sign of this 8-bit signed integer.
/// </summary>
/// <param name="value">A signed number.</param>
/// <returns>
/// A number that indicates the sign of <paramref name="value" />, as shown in the following table.
///
/// <list type="table">
/// <listheader>
/// <term>Return value</term>
/// <description>Meaning</description>
/// </listheader>
///
/// <item>
/// <term>-1</term>
/// <description><paramref name="value" /> is less than zero.</description>
/// </item>
/// <item>
/// <term>0</term>
/// <description><paramref name="value" /> is equal to zero.</description>
/// </item>
/// <item>
/// <term>1</term>
/// <description><paramref name="value" /> is greater than zero.</description>
/// </item>
/// </list>
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static int Sign(this sbyte value)
{
return System.Math.Sign(value);
}
}

113
X10D/src/DoubleExtensions/DoubleExtensions.cs
View File

@ -1,22 +1,10 @@
using X10D.Math; namespace X10D;
namespace X10D;
/// <summary> /// <summary>
/// Extension methods for <see cref="double" />. /// Extension methods for <see cref="double" />.
/// </summary> /// </summary>
public static class DoubleExtensions public static class DoubleExtensions
{ {
/// <summary>
/// Converts the current angle in degrees to its equivalent represented in radians.
/// </summary>
/// <param name="value">The angle in degrees to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
public static double DegreesToRadians(this double value)
{
return value * (System.Math.PI / 180.0);
}
/// <summary> /// <summary>
/// Converts the <see cref="double" /> to a <see cref="byte" />[]. /// Converts the <see cref="double" /> to a <see cref="byte" />[].
/// </summary> /// </summary>
@ -26,103 +14,4 @@ public static class DoubleExtensions
{ {
return BitConverter.GetBytes(number); return BitConverter.GetBytes(number);
} }
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsEven(this double value)
{
return System.Math.Abs(value % 2.0) < double.Epsilon;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsOdd(this double value)
{
return !value.IsEven();
}
/// <summary>
/// Linearly interpolates to the current value from a specified source using a specified alpha.
/// </summary>
/// <param name="target">The interpolation target.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
public static double LerpFrom(this double target, double value, double alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates from the current value to a specified target using a specified alpha.
/// </summary>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
public static double LerpTo(this double value, double target, double alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates to a specified target from a specified source, using the current value as the alpha value.
/// </summary>
/// <param name="alpha">The interpolation alpha.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
public static double LerpWith(this double alpha, double value, double target)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Converts the current angle in radians to its equivalent represented in degrees.
/// </summary>
/// <param name="value">The angle in radians to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
public static double RadiansToDegrees(this double value)
{
return value * (180.0 / System.Math.PI);
}
/// <summary>
/// Rounds the current value to the nearest whole number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <returns><paramref name="value" /> rounded to the nearest whole number.</returns>
public static double Round(this double value)
{
return value.Round(1.0);
}
/// <summary>
/// Rounds the current value to the nearest multiple of a specified number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <param name="nearest">The nearest multiple to which <paramref name="value" /> should be rounded.</param>
/// <returns><paramref name="value" /> rounded to the nearest multiple of <paramref name="nearest" />.</returns>
public static double Round(this double value, double nearest)
{
return System.Math.Round(value / nearest) * nearest;
}
} }

40
X10D/src/Math/ByteExtensions.cs
View File

@ -1,7 +1,7 @@
namespace X10D.Math; namespace X10D.Math;
/// <summary> /// <summary>
/// Extension methods for <see cref="byte" />. /// Math-related extension methods for <see cref="byte" />.
/// </summary> /// </summary>
public static class ByteExtensions public static class ByteExtensions
{ {
@ -25,4 +25,42 @@ public static class ByteExtensions
return result; return result;
} }
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsEven(this byte value)
{
return value % 2 == 0;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsOdd(this byte value)
{
return !value.IsEven();
}
/// <summary>
/// Returns a value indicating whether the current value is a prime number.
/// </summary>
/// <param name="value">The value whose primality to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is prime; otherwise, <see langword="false" />.
/// </returns>
public static bool IsPrime(this byte value)
{
return ((long)value).IsPrime();
}
} }

127
X10D/src/Math/DoubleExtensions.cs
View File

@ -148,6 +148,133 @@ public static class DoubleExtensions
return System.Math.Cosh(value); return System.Math.Cosh(value);
} }
/// <summary>
/// Converts the current angle in degrees to its equivalent represented in radians.
/// </summary>
/// <param name="value">The angle in degrees to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double DegreesToRadians(this double value)
{
return value * (System.Math.PI / 180.0);
}
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsEven(this double value)
{
return System.Math.Abs(value % 2.0) < double.Epsilon;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsOdd(this double value)
{
return !value.IsEven();
}
/// <summary>
/// Linearly interpolates to the current value from a specified source using a specified alpha.
/// </summary>
/// <param name="target">The interpolation target.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double LerpFrom(this double target, double value, double alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates from the current value to a specified target using a specified alpha.
/// </summary>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double LerpTo(this double value, double target, double alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates to a specified target from a specified source, using the current value as the alpha value.
/// </summary>
/// <param name="alpha">The interpolation alpha.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double LerpWith(this double alpha, double value, double target)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Converts the current angle in radians to its equivalent represented in degrees.
/// </summary>
/// <param name="value">The angle in radians to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double RadiansToDegrees(this double value)
{
return value * (180.0 / System.Math.PI);
}
/// <summary>
/// Rounds the current value to the nearest whole number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <returns><paramref name="value" /> rounded to the nearest whole number.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double Round(this double value)
{
return value.Round(1.0);
}
/// <summary>
/// Rounds the current value to the nearest multiple of a specified number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <param name="nearest">The nearest multiple to which <paramref name="value" /> should be rounded.</param>
/// <returns><paramref name="value" /> rounded to the nearest multiple of <paramref name="nearest" />.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static double Round(this double value, double nearest)
{
return System.Math.Round(value / nearest) * nearest;
}
/// <summary> /// <summary>
/// Returns the sine of the specified angle. /// Returns the sine of the specified angle.
/// </summary> /// </summary>

87
X10D/src/Math/SByteExtensions.cs
View File

@ -1,7 +1,10 @@
namespace X10D.Math; using System.Diagnostics.Contracts;
using System.Runtime.CompilerServices;
namespace X10D.Math;
/// <summary> /// <summary>
/// Extension methods for <see cref="sbyte" />. /// Math-related extension methods for <see cref="sbyte" />.
/// </summary> /// </summary>
[CLSCompliant(false)] [CLSCompliant(false)]
public static class SByteExtensions public static class SByteExtensions
@ -12,6 +15,8 @@ public static class SByteExtensions
/// <param name="value">The value whose factorial to compute.</param> /// <param name="value">The value whose factorial to compute.</param>
/// <returns>The factorial of <paramref name="value" />.</returns> /// <returns>The factorial of <paramref name="value" />.</returns>
/// <exception cref="ArithmeticException"><paramref name="value" /> is less than 0.</exception> /// <exception cref="ArithmeticException"><paramref name="value" /> is less than 0.</exception>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static long Factorial(this sbyte value) public static long Factorial(this sbyte value)
{ {
if (value < 0) if (value < 0)
@ -32,4 +37,82 @@ public static class SByteExtensions
return result; return result;
} }
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsEven(this sbyte value)
{
return value % 2 == 0;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsOdd(this sbyte value)
{
return !value.IsEven();
}
/// <summary>
/// Returns a value indicating whether the current value is a prime number.
/// </summary>
/// <param name="value">The value whose primality to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is prime; otherwise, <see langword="false" />.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsPrime(this sbyte value)
{
return ((long)value).IsPrime();
}
/// <summary>
/// Returns an integer that indicates the sign of this 8-bit signed integer.
/// </summary>
/// <param name="value">A signed number.</param>
/// <returns>
/// A number that indicates the sign of <paramref name="value" />, as shown in the following table.
///
/// <list type="table">
/// <listheader>
/// <term>Return value</term>
/// <description>Meaning</description>
/// </listheader>
///
/// <item>
/// <term>-1</term>
/// <description><paramref name="value" /> is less than zero.</description>
/// </item>
/// <item>
/// <term>0</term>
/// <description><paramref name="value" /> is equal to zero.</description>
/// </item>
/// <item>
/// <term>1</term>
/// <description><paramref name="value" /> is greater than zero.</description>
/// </item>
/// </list>
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static int Sign(this sbyte value)
{
return System.Math.Sign(value);
}
} }

127
X10D/src/Math/SingleExtensions.cs
View File

@ -148,6 +148,133 @@ public static class SingleExtensions
return MathF.Cosh(value); return MathF.Cosh(value);
} }
/// <summary>
/// Converts the current angle in degrees to its equivalent represented in radians.
/// </summary>
/// <param name="value">The angle in degrees to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float DegreesToRadians(this float value)
{
return value * (MathF.PI / 180.0f);
}
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsEven(this float value)
{
return value % 2 == 0;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static bool IsOdd(this float value)
{
return !value.IsEven();
}
/// <summary>
/// Linearly interpolates to the current value from a specified source using a specified alpha.
/// </summary>
/// <param name="target">The interpolation target.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float LerpFrom(this float target, float value, float alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates from the current value to a specified target using a specified alpha.
/// </summary>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float LerpTo(this float value, float target, float alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates to a specified target from a specified source, using the current value as the alpha value.
/// </summary>
/// <param name="alpha">The interpolation alpha.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float LerpWith(this float alpha, float value, float target)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Converts the current angle in radians to its equivalent represented in degrees.
/// </summary>
/// <param name="value">The angle in radians to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float RadiansToDegrees(this float value)
{
return value * (180.0f / MathF.PI);
}
/// <summary>
/// Rounds the current value to the nearest whole number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <returns><paramref name="value" /> rounded to the nearest whole number.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float Round(this float value)
{
return value.Round(1.0f);
}
/// <summary>
/// Rounds the current value to the nearest multiple of a specified number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <param name="nearest">The nearest multiple to which <paramref name="value" /> should be rounded.</param>
/// <returns><paramref name="value" /> rounded to the nearest multiple of <paramref name="nearest" />.</returns>
[Pure]
[MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
public static float Round(this float value, float nearest)
{
return MathF.Round(value / nearest) * nearest;
}
/// <summary> /// <summary>
/// Returns an integer that indicates the sign of this single-precision floating-point number. /// Returns an integer that indicates the sign of this single-precision floating-point number.
/// </summary> /// </summary>

5
X10D/src/Numerics/RandomExtensions.cs
View File

@ -1,4 +1,4 @@
using System.Numerics; using System.Numerics;
namespace X10D.Numerics; namespace X10D.Numerics;
@ -57,8 +57,7 @@ public static class RandomExtensions
y = seededRandom.NextSingle(-1f, 1f); y = seededRandom.NextSingle(-1f, 1f);
z = seededRandom.NextSingle(-1f, 1f); z = seededRandom.NextSingle(-1f, 1f);
normal = (w * w) + (x * x) + (y * y) + (z * z); normal = (w * w) + (x * x) + (y * y) + (z * z);
} } while (normal > 1f || normal == 0f);
while (normal > 1f || normal == 0f);
normal = MathF.Sqrt(normal); normal = MathF.Sqrt(normal);
return new Quaternion(x / normal, y / normal, z / normal, w / normal); return new Quaternion(x / normal, y / normal, z / normal, w / normal);

113
X10D/src/SingleExtensions/SingleExtensions.cs
View File

@ -1,22 +1,10 @@
using X10D.Math; namespace X10D;
namespace X10D;
/// <summary> /// <summary>
/// Extension methods for <see cref="float" />. /// Extension methods for <see cref="float" />.
/// </summary> /// </summary>
public static class SingleExtensions public static class SingleExtensions
{ {
/// <summary>
/// Converts the current angle in degrees to its equivalent represented in radians.
/// </summary>
/// <param name="value">The angle in degrees to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
public static float DegreesToRadians(this float value)
{
return value * (MathF.PI / 180.0f);
}
/// <summary> /// <summary>
/// Converts the <see cref="float" /> to a <see cref="byte" />[]. /// Converts the <see cref="float" /> to a <see cref="byte" />[].
/// </summary> /// </summary>
@ -26,103 +14,4 @@ public static class SingleExtensions
{ {
return BitConverter.GetBytes(number); return BitConverter.GetBytes(number);
} }
/// <summary>
/// Returns a value indicating whether the current value is evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsEven(this float value)
{
return value % 2 == 0;
}
/// <summary>
/// Returns a value indicating whether the current value is not evenly divisible by 2.
/// </summary>
/// <param name="value">The value whose parity to check.</param>
/// <returns>
/// <see langword="true" /> if <paramref name="value" /> is not evenly divisible by 2, or <see langword="false" />
/// otherwise.
/// </returns>
public static bool IsOdd(this float value)
{
return !value.IsEven();
}
/// <summary>
/// Linearly interpolates to the current value from a specified source using a specified alpha.
/// </summary>
/// <param name="target">The interpolation target.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
public static float LerpFrom(this float target, float value, float alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates from the current value to a specified target using a specified alpha.
/// </summary>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <param name="alpha">The interpolation alpha.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
public static float LerpTo(this float value, float target, float alpha)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Linearly interpolates to a specified target from a specified source, using the current value as the alpha value.
/// </summary>
/// <param name="alpha">The interpolation alpha.</param>
/// <param name="value">The interpolation source.</param>
/// <param name="target">The interpolation target.</param>
/// <returns>
/// The interpolation result as determined by <c>(1 - alpha) * value + alpha * target</c>.
/// </returns>
public static float LerpWith(this float alpha, float value, float target)
{
return MathUtility.Lerp(value, target, alpha);
}
/// <summary>
/// Converts the current angle in radians to its equivalent represented in degrees.
/// </summary>
/// <param name="value">The angle in radians to convert.</param>
/// <returns>The result of π * <paramref name="value" /> / 180.</returns>
public static float RadiansToDegrees(this float value)
{
return value * (180.0f / MathF.PI);
}
/// <summary>
/// Rounds the current value to the nearest whole number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <returns><paramref name="value" /> rounded to the nearest whole number.</returns>
public static float Round(this float value)
{
return value.Round(1.0f);
}
/// <summary>
/// Rounds the current value to the nearest multiple of a specified number.
/// </summary>
/// <param name="value">The value to round.</param>
/// <param name="nearest">The nearest multiple to which <paramref name="value" /> should be rounded.</param>
/// <returns><paramref name="value" /> rounded to the nearest multiple of <paramref name="nearest" />.</returns>
public static float Round(this float value, float nearest)
{
return MathF.Round(value / nearest) * nearest;
}
} }