Generic Decomposition Operations<T>.RQUnitary Multiply Method
Overwrites the general complex M-by-N matrix C with SIDE = 'L' SIDE = 'R' TRANS = 'N': Q * C C * Q TRANS = 'C': Q**H * C C * Q**H where Q is a complex unitary matrix defined as the product of k elementary reflectors Q = H(1)**H H(2)**H .
Definition
Assembly: Extreme.Numerics.Generic (in Extreme.Numerics.Generic.dll) Version: 8.1.4
public override void RQUnitaryMultiply(
MatrixOperationSide side,
TransposeOperation trans,
int m,
int n,
int k,
Array2D<Complex<T>> a,
Array1D<Complex<T>> tau,
Array2D<Complex<T>> c,
out int info
)
Parameters
- side MatrixOperationSide
-
C# SIDE is CHARACTER*1 = 'L': apply Q or Q**H from the Left; = 'R': apply Q or Q**H from the Right.
- trans TransposeOperation
-
C# TRANS is CHARACTER*1 = 'N': No transpose, apply Q; = 'C': Transpose, apply Q**H.
- m Int32
-
C# M is INTEGER The number of rows of the matrix C. M >= 0.
- n Int32
-
C# N is INTEGER The number of columns of the matrix C. N >= 0.
- k Int32
-
C# K is INTEGER The number of elementary reflectors whose product defines the matrix Q. If SIDE = 'L', M >= K >= 0; if SIDE = 'R', N >= K >= 0.
- a Array2D<Complex<T>>
-
C# A is COMPLEX*16 array, dimension (LDA,M) if SIDE = 'L', (LDA,N) if SIDE = 'R' The i-th row must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by ZGERQF in the last k rows of its array argument A.
- tau Array1D<Complex<T>>
-
C# TAU is COMPLEX*16 array, dimension (K) TAU(i) must contain the scalar factor of the elementary reflector H(i), as returned by ZGERQF.
- c Array2D<Complex<T>>
-
C# C is COMPLEX*16 array, dimension (LDC,N) On entry, the M-by-N matrix C. On exit, C is overwritten by Q*C or Q**H*C or C*Q**H or C*Q.
- info Int32
-
C# INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value
Remarks
. . H(k)**H
as returned by ZGERQF. Q is of order M if SIDE = 'L' and of order N
if SIDE = 'R'.
Authors: Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver, NAG Ltd.
Date: November 2015