LinearAlgebraOperationsExtensions.Copy Method

Definition

Namespace: Numerics.NET.Collections
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.0

Overload List

Copy<T>(ILinearAlgebraOperations<T>, Int32, ReadOnlySpanSlice<T>, SpanSlice<T>)

Copies a vector, x, to a vector, y.

C# 
public static void Copy<T>(
	this ILinearAlgebraOperations<T> operations,
	int n,
	ReadOnlySpanSlice<T> x,
	SpanSlice<T> y
)

Parameters

operations  ILinearAlgebraOperations<T>
 
n  Int32
 
x  ReadOnlySpanSlice<T>
 
y  SpanSlice<T>
 

Type Parameters

T

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ILinearAlgebraOperations<T>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

            uses unrolled loops for increments equal to one.

Further Details:

            jack dongarra, linpack, 3/11/78.
            modified 12/3/93, array(1) declarations changed to array(*)

Authors: Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver, NAG Ltd.

Date: November 2011

Copy<T, TStorage>(ILinearAlgebraOperations<T>, Int32, TStorage, TStorage)

Copies a vector.
C# 
public static void Copy<T, TStorage>(
	this ILinearAlgebraOperations<T> operations,
	int n,
	TStorage x,
	TStorage y
)
where TStorage : Object, IStorageSlice<T>

Parameters

operations  ILinearAlgebraOperations<T>
The linear algebra operations instance used to perform the calculation.
n  Int32
The number of elements in the vectors x and y.
x  TStorage
A reference to a one-dimensional array containing the elements of the vector x.
y  TStorage
A reference to a one-dimensional array containing the elements of the vector y. The elements of y are overwritten with the elements of x.

Type Parameters

T
TStorage

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ILinearAlgebraOperations<T>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Copy<T>(ILinearAlgebraOperations<T>, MatrixTriangle, Int32, Int32, ReadOnlySpan2D<T>, Span2D<T>)

Copies all or part of a two-dimensional matrix A to another matrix B.

C# 
public static void Copy<T>(
	this ILinearAlgebraOperations<T> operations,
	MatrixTriangle storedTriangle,
	int m,
	int n,
	ReadOnlySpan2D<T> a,
	Span2D<T> b
)

Parameters

operations  ILinearAlgebraOperations<T>
The object that performs the operation.
storedTriangle  MatrixTriangle
            Specifies the part of the matrix A to be copied to B.
            = 'U':      Upper triangular part
            = 'L':      Lower triangular part
            Otherwise:  All of the matrix A
m  Int32
            The number of rows of the matrix A.  M >= 0.
n  Int32
            The number of columns of the matrix A.  N >= 0.
a  ReadOnlySpan2D<T>
            Dimension (LDA,N)
            The m by n matrix A.  If UPLO = 'U', only the upper triangle
            or trapezoid is accessed; if UPLO = 'L', only the lower
            triangle or trapezoid is accessed.
            
            The leading dimension of the array A.  LDA >= max(1,M).
b  Span2D<T>
            Dimension (LDB,N)
            On exit, B = A in the locations specified by UPLO.
            
            The leading dimension of the array B.  LDB >= max(1,M).

Type Parameters

T

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ILinearAlgebraOperations<T>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

This method corresponds to the LAPACK routine DLACPY.

Copy<T, TStorage2D>(ILinearAlgebraOperations<T>, MatrixTriangle, Int32, Int32, TStorage2D, TStorage2D)

Copies part of a matrix to another.
C# 
public static void Copy<T, TStorage2D>(
	this ILinearAlgebraOperations<T> operations,
	MatrixTriangle storedTriangle,
	int m,
	int n,
	TStorage2D a,
	TStorage2D b
)
where TStorage2D : Object, IStorage2D<T>

Parameters

operations  ILinearAlgebraOperations<T>
The linear algebra operations instance used to perform the calculation.
storedTriangle  MatrixTriangle
A MatrixTriangle value that specifies which part of the matrix to copy.
m  Int32
An integer specifying the number of rows of the matrix a. Must be greater than or equal to zero.
n  Int32
An integer specifying the number of columns of the matrix a. Must be greater than or equal to zero.
a  TStorage2D
T array specifying the m-by-n source matrix.
b  TStorage2D
T array specifying the m-by-n destination matrix.

Type Parameters

T
TStorage2D

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ILinearAlgebraOperations<T>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

This method corresponds to the LAPACK routine ?LACPY.

See Also