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LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
|
| subroutine zlarf1f | ( | character | side, |
| integer | m, | ||
| integer | n, | ||
| complex*16, dimension( * ) | v, | ||
| integer | incv, | ||
| complex*16 | tau, | ||
| complex*16, dimension( ldc, * ) | c, | ||
| integer | ldc, | ||
| complex*16, dimension( * ) | work | ||
| ) |
ZLARF1F applies an elementary reflector to a general rectangular
Download ZLARF1F + dependencies [TGZ] [ZIP] [TXT]
ZLARF1F applies a complex elementary reflector H to a real m by n matrix
C, from either the left or the right. H is represented in the form
H = I - tau * v * v**H
where tau is a complex scalar and v is a complex vector.
If tau = 0, then H is taken to be the unit matrix.
To apply H**H, supply conjg(tau) instead
tau. | [in] | SIDE | SIDE is CHARACTER*1
= 'L': form H * C
\param[in] M
\verbatim
M is INTEGER
The number of rows of the matrix C. |
| [in] | N | N is INTEGER
The number of columns of the matrix C. |
| [in] | V | V is COMPLEX*16 array, dimension
(1 + (M-1)*abs(INCV)) if SIDE = 'L'
or (1 + (N-1)*abs(INCV)) if SIDE = 'R'
The vector v in the representation of H. V is not used if
TAU = 0. V(1) is not referenced or modified. |
| [in] | INCV | INCV is INTEGER
The increment between elements of v. INCV <> 0. |
| [in] | TAU | TAU is COMPLEX*16
The value tau in the representation of H. |
| [in,out] | C | C is COMPLEX*16 array, dimension (LDC,N)
On entry, the m by n matrix C.
On exit, C is overwritten by the matrix H * C if SIDE = 'L',
or C * H if SIDE = 'R'. |
| [in] | LDC | LDC is INTEGER
The leading dimension of the array C. LDC >= max(1,M). |
| [out] | WORK | WORK is COMPLEX*16 array, dimension
(N) if SIDE = 'L'
or (M) if SIDE = 'R' |