ILinearAlgebraOperations<T, TVector, TMatrix>.BandMultiplyAndAddInPlace Method

Sum of the product of a general band matrix and vector and a scaled vector.

Definition

Namespace: Extreme.Mathematics.LinearAlgebra.Implementation
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23
C#
void BandMultiplyAndAddInPlace(
	TransposeOperation transposeOperation,
	int m,
	int n,
	int kl,
	int ku,
	T alpha,
	TMatrix a,
	TVector x,
	T beta,
	TVector y
)

Parameters

transposeOperation  TransposeOperation
Specifies the operation to be performed on the matrix a.
m  Int32
The number of rows in the matrix a.
n  Int32
The number of columns in the matrix a.
kl  Int32
The lower bandwidth of the matrix a.
ku  Int32
The upper bandwidth of the matrix a.
alpha  T
The scalar used to multiply the matrix-vector product.
a  TMatrix
Reference to the first element in a one-dimensional array that contains the elements of the matrix.
x  TVector
A reference to a one-dimensional array containing the elements of the vector x.
beta  T
The scalar used to multiply y.
y  TVector
A reference to a one-dimensional array containing the elements of the vector y. The elements of y are overwritten with the result.

Remarks

This method is similar to the BLAS routine DGBMV.

See Also