zlarfy.f - Online Linux Manual PageSection : 3
Updated : Tue Nov 14 2017
Source : Version 3.8.0
Note : LAPACK
NAMEzlarfy.f
SYNOPSIS
Functions/Subroutinessubroutine zlarfy (UPLO, N, V, INCV, TAU, C, LDC, WORK)
ZLARFY
Function/Subroutine Documentation
subroutine zlarfy (character UPLO, integer N, complex*16, dimension( * ) V, integer INCV, complex*16 TAU, complex*16, dimension( ldc, * ) C, integer LDC, complex*16, dimension( * ) WORK)ZLARFY Purpose: ZLARFY applies an elementary reflector, or Householder matrix, H,
to an n x n Hermitian matrix C, from both the left and the right.
H is represented in the form
H = I - tau * v * v'
where tau is a scalar and v is a vector.
If tau is zero, then H is taken to be the unit matrix.Parameters: UPLO UPLO is CHARACTER*1
Specifies whether the upper or lower triangular part of the
Hermitian matrix C is stored.
= 'U': Upper triangle
= 'L': Lower triangle
N N is INTEGER
The number of rows and columns of the matrix C. N >= 0.
V V is COMPLEX*16 array, dimension
(1 + (N-1)*abs(INCV))
The vector v as described above.
INCV INCV is INTEGER
The increment between successive elements of v. INCV must
not be zero.
TAU TAU is COMPLEX*16
The value tau as described above.
C C is COMPLEX*16 array, dimension (LDC, N)
On entry, the matrix C.
On exit, C is overwritten by H * C * H'.
LDC LDC is INTEGER
The leading dimension of the array C. LDC >= max( 1, N ).
WORK WORK is COMPLEX*16 array, dimension (N)Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: December 2016 Definition at line 110 of file zlarfy.f.
AuthorGenerated automatically by Doxygen for LAPACK from the source code. 0
Johanes Gumabo
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