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68 lines
3.1 KiB
68 lines
3.1 KiB
// <copyright file="LinearAlgebra.fs" company="Math.NET">
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// Math.NET Numerics, part of the Math.NET Project
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// http://numerics.mathdotnet.com
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// http://github.com/mathnet/mathnet-numerics
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// http://mathnetnumerics.codeplex.com
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//
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// Copyright (c) 2009-2012 Math.NET
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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// </copyright>
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namespace MathNet.Numerics.LinearAlgebra.Generic
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// Module that contains implementation of useful F#-specific
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// extension members for generic Matrix and Vector types
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[<AutoOpen>]
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module FSharpExtensions =
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// A type extension for the generic vector type that
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// adds the 'GetSlice' method to allow vec.[a .. b] syntax
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type MathNet.Numerics.LinearAlgebra.Generic.
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Vector<'T when 'T : struct and 'T : (new : unit -> 'T)
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and 'T :> System.IEquatable<'T> and 'T :> System.IFormattable
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and 'T :> System.ValueType> with
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/// Gets a slice of a vector starting at a specified index
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/// and ending at a specified index (both indices are optional)
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/// This method can be used via the x.[start .. finish] syntax
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member x.GetSlice(start, finish) =
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let start = defaultArg start 0
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let finish = defaultArg finish (x.Count - 1)
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x.SubVector(start, finish - start + 1)
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// A type extension for the generic matrix type that
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// adds the 'GetSlice' method to allow m.[r1 .. r2, c1 .. c2] syntax
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type MathNet.Numerics.LinearAlgebra.Generic.
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Matrix<'T when 'T : struct and 'T : (new : unit -> 'T)
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and 'T :> System.IEquatable<'T> and 'T :> System.IFormattable
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and 'T :> System.ValueType> with
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/// Gets a submatrix using a specified column range and
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/// row range (all indices are optional)
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/// This method can be used via the x.[r1 .. r2, c1 .. c2 ] syntax
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member x.GetSlice(rstart, rfinish, cstart, cfinish) =
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let cstart = defaultArg cstart 0
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let rstart = defaultArg rstart 0
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let cfinish = defaultArg cfinish (x.ColumnCount - 1)
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let rfinish = defaultArg rfinish (x.RowCount - 1)
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x.SubMatrix(rstart, rfinish - rstart + 1, cstart, cfinish - cstart + 1)
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