ILinearAlgebraOperations<T>.TriangularMultiplyInPlace Method

Definition

Namespace: Numerics.NET.LinearAlgebra.Implementation
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.4

Overload List

TriangularMultiplyInPlace(MatrixTriangle, TransposeOperation, MatrixDiagonal, Int32, ReadOnlySpan<T>, Int32, Span<T>, Int32)

Product of a triangular matrix and a vector.
C# 
void TriangularMultiplyInPlace(
	MatrixTriangle storedTriangle,
	TransposeOperation transposeOperation,
	MatrixDiagonal diagonal,
	int n,
	ReadOnlySpan<T> a,
	int lda,
	Span<T> x,
	int incx
)

Parameters

storedTriangle  MatrixTriangle
Specifies whether the matrix is an upper or lower triangular matrix.
transposeOperation  TransposeOperation
Specifies the operation to be performed on the matrix a.
diagonal  MatrixDiagonal
Specifies whether or not the matrix is unit triangular.
n  Int32
The number of rows and columns in the matrix a.
a  ReadOnlySpan<T>
A span that contains the elements of the matrix.
lda  Int32
The leading dimension of the matrix a.
x  Span<T>
A span containing the elements of the vector x. The elements of x are overwritten with the result.
incx  Int32
The distance between elements in x.

Remarks

This method is similar to the BLAS routine DTRMV.

TriangularMultiplyInPlace(MatrixOperationSide, MatrixTriangle, TransposeOperation, MatrixDiagonal, Int32, Int32, T, ReadOnlySpan<T>, Int32, Span<T>, Int32)

Product of a triangular and a general matrix.
C# 
void TriangularMultiplyInPlace(
	MatrixOperationSide side,
	MatrixTriangle storedTriangle,
	TransposeOperation transA,
	MatrixDiagonal diag,
	int m,
	int n,
	T alpha,
	ReadOnlySpan<T> a,
	int lda,
	Span<T> b,
	int ldb
)

Parameters

side  MatrixOperationSide
Specifies on which side the triangular matrix a is to be multiplied.
storedTriangle  MatrixTriangle
Specifies whether the elements of the matrix a are stored in the upper or lower triangular part.
transA  TransposeOperation
Specifies the operation to be performed on the matrix a.
diag  MatrixDiagonal
Specifies whether or not the matrix is unit triangular.
m  Int32
The number of rows in the matrix a and the number of columns of the matrix b.
n  Int32
The number of columns in the matrix b and the matrix b.
alpha  T
The scalar used to multiply the matrix-vector product.
a  ReadOnlySpan<T>
A span that contains the elements of the first matrix.
lda  Int32
The leading dimension of the matrix a.
b  Span<T>
A span that contains the elements of the second matrix.
ldb  Int32
The leading dimension of the matrix b.

See Also