• Documentation
  • Core API
  • SmartOpenHamburg API
  • Model Components API
  • Common API

    Show / Hide Table of Contents
    • Mars.Common
      • GeoHash
      • GeoHashDecoder
      • GeohashDecodeResult
      • GeoHashEncoder
      • GeoHashPrecision
      • Hyperrectangle
      • InputHashHelper
      • PositionHelper
    • Mars.Common.Collections
      • BinaryArrayHeap<T>
      • DoubleBits
      • FibonacciHeap<T, TKey>
      • FibonacciHeapDoubleKey<T>
      • FibonacciHeapNode<T, TKey>
      • FibonacciHeapNodeDoubleKey<T>
      • HeapNode
      • IntervalSize
      • K2DTree<T>
      • K2dTreeNode<T>
      • KdTree
      • KdTree<T>
      • KdTreeBase<TNode>
      • KdTreeNode
      • KdTreeNode<T>
      • KdTreeNodeBase<TNode>
      • KdTreeNodeCollection<TNode>
      • KdTreeNodeList<T>
      • Key
      • Node<T>
      • NodeBase<T>
      • NodeDataContainer<T>
      • NodeDistance<TNode>
      • QuadTree<T>
      • Root<T>
      • TreeDataContainer<T>
    • Mars.Common.Collections.CritBit
      • ICritBitTree<TValue>
    • Mars.Common.Collections.Graph
      • EdgeData
      • GraphData
      • GraphSerializer
      • ISpatialGraph
      • KeyContainer
      • NodeData
      • SpatialGraph
      • SpatialGraphHelper
    • Mars.Common.Collections.Graph.Algorithms
      • AStar
      • CompressedPathDatabase
      • ContractionSearch
      • DepthLimitedTraversal
    • Mars.Common.Collections.Graph.Helper
      • INodeFinder
      • KdTreeNodeFinder
      • RunLengthEncoder
    • Mars.Common.Collections.KNNGraph
      • DefaultRandomGenerator
      • DistanceUtils
      • EventSources
      • EventSources.GraphBuildEventSource
      • EventSources.GraphSearchEventSource
      • IProgressReporter
      • IProvideRandomValues
      • KnnGraph<TItem, TDistance>
      • KnnGraph<TItem, TDistance>.KnnSearchResult
      • KnnGraph<TItem, TDistance>.Parameters
      • Node
      • ReverseComparer<T>
      • ReverseComparerExtensions
      • SelectionKind
      • TravelingCosts<TItem, TDistance>
    • Mars.Common.Compat
      • FormatDecoderAttribute
      • FormatEncoderAttribute
      • FormatHandlerAttribute
      • IntegerAttribute
      • NegativeIntegerAttribute
      • NonnegativeIntegerAttribute
      • NonpositiveIntegerAttribute
      • PositiveIntegerAttribute
    • Mars.Common.Data
      • DomainDataImporter
    • Mars.Common.Data.Providers
      • AscDataProvider
      • GeoJsonFeatureCollectionConverter
      • GeoJsonFeatureConverter
      • GeometryDataProvider
      • GraphMlProvider
      • HttpDataProvider
      • IDataProvider<TInput>
      • JsonFileDataProvider
      • JsonTextDataProvider
      • XmlFileDataProvider
      • XmlTextDataProvider
    • Mars.Common.Exceptions
      • DimensionMismatchException
      • ParseException
    • Mars.Common.IO
      • ExtensionMethods
      • FileClientUtils
      • FileKeys
      • HttpClientUtils
      • ObjectSerialize
      • Serializer
      • SerializerCompression
      • SparseFormat
      • SparseReader
      • SparseWriter
    • Mars.Common.IO.Attributes
      • SerializationBinderAttribute
      • SurrogateSelectorAttribute
    • Mars.Common.IO.Console
      • ChildProgressBar
      • IProgressBar
      • ProgressBar
      • ProgressBarBase
      • ProgressBarHeight
      • ProgressBarOptions
      • ProgressBarSimple
    • Mars.Common.IO.Csv
      • CsvAnalyzer
      • CsvReader
      • CsvReader.RecordEnumerator
      • CsvWriter
      • MissingFieldAction
      • ParseErrorAction
      • ValueTrimmingOptions
    • Mars.Common.IO.Events
      • ParseErrorEventArgs
    • Mars.Common.IO.Exceptions
      • MalformedCsvException
      • MissingFieldCsvException
    • Mars.Common.IO.Mapped
      • Context
      • DefaultArrayFactory
      • Extensions
      • IArrayFactory
      • ISerializableToStream
      • MappedAccessor<T>
      • MemoryMap
      • MemoryMap.CreateAccessorFunc<T>
      • MemoryMap.ReadFromDelegate<T>
      • MemoryMap.WriteToDelegate<T>
      • MemoryMapDelegates
      • MemoryMapDelegates.CreateAccessorFunc<T>
      • MemoryMapStream
    • Mars.Common.IO.Mapped.Accessors
      • MappedAccessorByte
      • MappedAccessorDouble
      • MappedAccessorInt16
      • MappedAccessorInt32
      • MappedAccessorInt64
      • MappedAccessorSingle
      • MappedAccessorUInt16
      • MappedAccessorUInt32
      • MappedAccessorUInt64
      • MappedAccessorVariable<T>
    • Mars.Common.IO.Mapped.Arrays
      • Array<T>
      • ArrayBase<T>
      • ArrayProfile
      • MappedArray<TMapped, T>
      • MappedArray<TMapped, T>.MapFrom
      • MappedArray<TMapped, T>.MapTo
      • MemoryArray<T>
      • VariableArray<T>
    • Mars.Common.IO.Mapped.Collections
      • MemoryBackedDictionary<TKey, TValue>
      • MemoryBackedList<T>
    • Mars.Common.IO.Mapped.Indexes
      • Index<T>
    • Mars.Common.IO.Mapped.Streams
      • CappedStream
    • Mars.Common.Socket
      • ByteOrder
      • CloseEventArgs
      • CloseStatusCode
      • CompressionMethod
      • ErrorEventArgs
      • Ext
      • MessageEventArgs
      • WebSocket
      • WebSocketException
      • WebSocketState
    • Mars.Common.Socket.Server
      • IWebSocketSession
      • WebHeaderCollection
      • WebSocketBehavior
      • WebSocketContext
      • WebSocketServer
      • WebSocketServiceHost
      • WebSocketServiceManager
      • WebSocketSessionManager
    • Mars.Numerics
      • Classes
      • Combinatorics
      • Constants
      • Distance
      • Elementwise
      • Jagged
      • MathematicsException
      • MathHelper
      • Matrix
      • MatrixOrder
      • MatrixType
      • Norm
      • Sort
      • Sorting
      • Sparse
      • Sparse<T>
      • Tools
      • Vector
      • VectorHelper
      • VectorType
    • Mars.Numerics.Comparers
      • ArrayComparer<T>
      • ComparerDirection
      • CustomComparer<T>
      • ElementComparer
      • ElementComparer<T>
      • GeneralComparer
      • StableComparer<T>
    • Mars.Numerics.Distances
      • Angular
      • Chebyshev
      • Cosine
      • Dirac<T>
      • Euclidean
      • Hamming
      • Hamming<T>
      • Haversine
      • Jaccard
      • Jaccard<T>
      • Kulczynski
      • Levenshtein
      • Levenshtein<T>
      • Manhattan
      • Matching
      • Minkowski
      • SquareEuclidean
      • Vincenty
      • Vincenty.Ellipsoid
    • Mars.Numerics.Distances.Base
      • IDistance<T>
      • IDistance<TFirst, TSecond>
      • IMetric<T>
      • ISimilarity<T, TU>
      • ISimilarity<T>
    • Mars.Numerics.Exceptions
      • DimensionMismatchException
      • NonPositiveDefiniteMatrixException
      • SingularMatrixException
    • Mars.Numerics.Formats
      • DefaultMatrixFormatProvider
      • IMatrixFormatProvider
      • MatrixFormatProviderBase
      • MatrixFormatter
      • OctaveMatrixFormatProvider
    • Mars.Numerics.Ranges
      • ByteRange
      • DoubleRange
      • FloatRange
      • IntRange
      • IRange<T>
    • Mars.Numerics.Statistics
      • ConstValueDistribution<T>
      • Distribution<T>
      • FastGaussianDistributionD
      • FastGaussianDistributionF
      • IDistribution
      • UniformDiscreteDistribution
      • UniformDistributionD
      • UniformDistributionF
    • Mars.Numerics.Statistics.Base
      • BinarySearch
      • DistributionBase
      • ISampleableDistribution<TObservations>
      • IUnivariateDistribution
      • IUnivariateDistribution<TObservation>
      • UnivariateDiscreteDistribution

    Class Tools

    Set of mathematical tools.
    Inheritance
    System.Object
    Tools
    Namespace: Mars.Numerics
    Assembly: Mars.Numerics.dll
    Syntax
    public static class Tools : object

    Methods

    Acosh(Double)

    Returns the hyperbolic arc cosine of the specified value.
    Declaration
    public static double Acosh(double x)
    Parameters
    Type Name Description
    System.Double x
    Returns
    Type Description
    System.Double

    Asinh(Double)

    Returns the hyperbolic arc sine of the specified value.
    Declaration
    public static double Asinh(double d)
    Parameters
    Type Name Description
    System.Double d
    Returns
    Type Description
    System.Double

    Atanh(Double)

    Returns the hyperbolic arc tangent of the specified value.
    Declaration
    public static double Atanh(double d)
    Parameters
    Type Name Description
    System.Double d
    Returns
    Type Description
    System.Double

    Hypotenuse(Double, Double)

    Hypotenuse calculus without overflow/underflow
    Declaration
    public static double Hypotenuse(double a, double b)
    Parameters
    Type Name Description
    System.Double a First value
    System.Double b Second value
    Returns
    Type Description
    System.Double The hypotenuse Sqrt(a^2 + b^2)

    Hypotenuse(Single, Single)

    Hypotenuse calculus without overflow/underflow
    Declaration
    public static float Hypotenuse(float a, float b)
    Parameters
    Type Name Description
    System.Single a first value
    System.Single b second value
    Returns
    Type Description
    System.Single The hypotenuse Sqrt(a^2 + b^2)

    InvSqrt(Single)

    Fast inverse floating-point square root.
    Declaration
    public static float InvSqrt(float f)
    Parameters
    Type Name Description
    System.Single f
    Returns
    Type Description
    System.Single

    IsPowerOf2(Int32)

    Checks if the specified integer is power of 2.
    Declaration
    public static bool IsPowerOf2(int x)
    Parameters
    Type Name Description
    System.Int32 x Integer number to check.
    Returns
    Type Description
    System.Boolean Returns true if the specified number is power of 2. Otherwise returns false.

    Max(Double, Double, Double)

    Gets the maximum value among three values.
    Declaration
    public static double Max(double a, double b, double c)
    Parameters
    Type Name Description
    System.Double a The first value a.
    System.Double b The second value b.
    System.Double c The third value c.
    Returns
    Type Description
    System.Double The maximum value among a, b and c.

    Min(Double, Double, Double)

    Gets the minimum value among three values.
    Declaration
    public static double Min(double a, double b, double c)
    Parameters
    Type Name Description
    System.Double a The first value a.
    System.Double b The second value b.
    System.Double c The third value c.
    Returns
    Type Description
    System.Double The minimum value among a, b and c.

    NextPowerOf2(Int32)

    Returns the next power of 2 after the input value x.
    Declaration
    public static int NextPowerOf2(int x)
    Parameters
    Type Name Description
    System.Int32 x Input value x.
    Returns
    Type Description
    System.Int32 Returns the next power of 2 after the input value x.

    PreviousPowerOf2(Int32)

    Returns the previous power of 2 after the input value x.
    Declaration
    public static int PreviousPowerOf2(int x)
    Parameters
    Type Name Description
    System.Int32 x Input value x.
    Returns
    Type Description
    System.Int32 Returns the previous power of 2 after the input value x.
    Back to top Copyright © MARS GROUP.
    HAW Hamburg