LinearAlgebraOperationsExtensions.RankUpdate Method

public static void RankUpdate<T>(
	this ILinearAlgebraOperations<T> operations,
	int m,
	int n,
	T alpha,
	ReadOnlySpanSlice<T> x,
	ReadOnlySpanSlice<T> y,
	Span2D<T> a
)

<ExtensionAttribute>
Public Shared Sub RankUpdate(Of T) ( 
	operations As ILinearAlgebraOperations(Of T),
	m As Integer,
	n As Integer,
	alpha As T,
	x As ReadOnlySpanSlice(Of T),
	y As ReadOnlySpanSlice(Of T),
	a As Span2D(Of T)
)

public:
[ExtensionAttribute]
generic<typename T>
static void RankUpdate(
	ILinearAlgebraOperations<T>^ operations, 
	int m, 
	int n, 
	T alpha, 
	ReadOnlySpanSlice<T> x, 
	ReadOnlySpanSlice<T> y, 
	Span2D<T> a
)

[<ExtensionAttribute>]
static member RankUpdate : 
        operations : ILinearAlgebraOperations<'T> * 
        m : int * 
        n : int * 
        alpha : 'T * 
        x : ReadOnlySpanSlice<'T> * 
        y : ReadOnlySpanSlice<'T> * 
        a : Span2D<'T> -> unit 

Parameters

operations  ILinearAlgebraOperations<T>

The object that performs the operation.

m  Int32

             On entry, M specifies the number of rows of the matrix A.
             M must be at least zero.
            

n  Int32

             On entry, N specifies the number of columns of the matrix A.
             N must be at least zero.
            

alpha  T

            ALPHA is DOUBLE PRECISION.
             On entry, ALPHA specifies the scalar alpha.
            

x  ReadOnlySpanSlice<T>

            X is DOUBLE PRECISION array of dimension at least
             ( 1 + ( m - 1 )*abs( INCX ) ).
             Before entry, the incremented array X must contain the m
             element vector x.
            

             On entry, INCX specifies the increment for the elements of
             X. INCX must not be zero.
            

y  ReadOnlySpanSlice<T>

            Y is DOUBLE PRECISION array of dimension at least
             ( 1 + ( n - 1 )*abs( INCY ) ).
             Before entry, the incremented array Y must contain the n
             element vector y.
            

             On entry, INCY specifies the increment for the elements of
             Y. INCY must not be zero.
            

a  Span2D<T>

            A is DOUBLE PRECISION array of DIMENSION ( LDA, n ).
             Before entry, the leading m by n part of the array A must
             contain the matrix of coefficients. On exit, A is
             overwritten by the updated matrix.
            

             On entry, LDA specifies the first dimension of A as declared
             in the calling (sub) program. LDA must be at least
             max( 1, m ).
            

Type Parameters

T

Usage Note

 Further Details:
            Level 2 LinearAlgebra routine.
            -- Written on 22-October-1986.
               Jack Dongarra, Argonne National Lab.
               Jeremy Du Croz, Nag Central Office.
               Sven Hammarling, Nag Central Office.
               Richard Hanson, Sandia National Labs.
            
Authors: 
             Univ. of Tennessee,
             Univ. of California Berkeley,
             Univ. of Colorado Denver,
             NAG Ltd.
Date:  November 2011

public static void RankUpdate<T, TStorage, TStorage2D>(
	this ILinearAlgebraOperations<T> operations,
	int m,
	int n,
	T alpha,
	TStorage x,
	TStorage y,
	TStorage2D a
)
where TStorage : Object, IStorageSlice<T>
where TStorage2D : Object, IStorage2D<T>

<ExtensionAttribute>
Public Shared Sub RankUpdate(Of T, TStorage As {Object, IStorageSlice(Of T)}, TStorage2D As {Object, IStorage2D(Of T)}) ( 
	operations As ILinearAlgebraOperations(Of T),
	m As Integer,
	n As Integer,
	alpha As T,
	x As TStorage,
	y As TStorage,
	a As TStorage2D
)

public:
[ExtensionAttribute]
generic<typename T, typename TStorage, typename TStorage2D>
where TStorage : Object, IStorageSlice<T>
where TStorage2D : Object, IStorage2D<T>
static void RankUpdate(
	ILinearAlgebraOperations<T>^ operations, 
	int m, 
	int n, 
	T alpha, 
	TStorage x, 
	TStorage y, 
	TStorage2D a
)

[<ExtensionAttribute>]
static member RankUpdate : 
        operations : ILinearAlgebraOperations<'T> * 
        m : int * 
        n : int * 
        alpha : 'T * 
        x : 'TStorage * 
        y : 'TStorage * 
        a : 'TStorage2D -> unit  when 'TStorage : Object and IStorageSlice<'T> when 'TStorage2D : Object and IStorage2D<'T>

Parameters

operations  ILinearAlgebraOperations<T>

The linear algebra operations instance used to perform the calculation.

m  Int32

The number of rows in the matrix a.

n  Int32

The number of columns in the matrix a.

alpha  T

The scalar used to multiply the outer product.

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.

a  TStorage2D

A span that contains the elements of the matrix.

Type Parameters

T

TStorage

TStorage2D

Usage Note

This method is similar to the BLAS routine DGER.

Reference