zla_hercond_x.f - Online Linux Manual PageSection : 3
Updated : Tue Nov 14 2017
Source : Version 3.8.0
Note : LAPACK
NAMEzla_hercond_x.f
SYNOPSIS
Functions/Subroutinesdouble precision function zla_hercond_x (UPLO, N, A, LDA, AF, LDAF, IPIV, X, INFO, WORK, RWORK)
ZLA_HERCOND_X computes the infinity norm condition number of op(A)*diag(x) for Hermitian indefinite matrices.
Function/Subroutine Documentation
double precision function zla_hercond_x (character UPLO, integer N, complex*16, dimension( lda, * ) A, integer LDA, complex*16, dimension( ldaf, * ) AF, integer LDAF, integer, dimension( * ) IPIV, complex*16, dimension( * ) X, integer INFO, complex*16, dimension( * ) WORK, double precision, dimension( * ) RWORK)ZLA_HERCOND_X computes the infinity norm condition number of op(A)*diag(x) for Hermitian indefinite matrices. Purpose: ZLA_HERCOND_X computes the infinity norm condition number of
op(A) * diag(X) where X is a COMPLEX*16 vector.Parameters: UPLO UPLO is CHARACTER*1
= 'U': Upper triangle of A is stored;
= 'L': Lower triangle of A is stored.
N N is INTEGER
The number of linear equations, i.e., the order of the
matrix A. N >= 0.
A A is COMPLEX*16 array, dimension (LDA,N)
On entry, the N-by-N matrix A.
LDA LDA is INTEGER
The leading dimension of the array A. LDA >= max(1,N).
AF AF is COMPLEX*16 array, dimension (LDAF,N)
The block diagonal matrix D and the multipliers used to
obtain the factor U or L as computed by ZHETRF.
LDAF LDAF is INTEGER
The leading dimension of the array AF. LDAF >= max(1,N).
IPIV IPIV is INTEGER array, dimension (N)
Details of the interchanges and the block structure of D
as determined by CHETRF.
X X is COMPLEX*16 array, dimension (N)
The vector X in the formula op(A) * diag(X).
INFO INFO is INTEGER
= 0: Successful exit.
i > 0: The ith argument is invalid.
WORK WORK is COMPLEX*16 array, dimension (2*N).
Workspace.
RWORK RWORK is DOUBLE PRECISION array, dimension (N).
Workspace.Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: December 2016 Definition at line 135 of file zla_hercond_x.f.
AuthorGenerated automatically by Doxygen for LAPACK from the source code. 0
Johanes Gumabo
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