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cla_syrcond_c.f(3) LAPACK cla_syrcond_c.f(3)

NAME

cla_syrcond_c.f -

SYNOPSIS

Functions/Subroutines


REAL function cla_syrcond_c (UPLO, N, A, LDA, AF, LDAF, IPIV, C, CAPPLY, INFO, WORK, RWORK)
CLA_SYRCOND_C computes the infinity norm condition number of op(A)*inv(diag(c)) for symmetric indefinite matrices.

Function/Subroutine Documentation

REAL function cla_syrcond_c (characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldaf, * )AF, integerLDAF, integer, dimension( * )IPIV, real, dimension( * )C, logicalCAPPLY, integerINFO, complex, dimension( * )WORK, real, dimension( * )RWORK)

CLA_SYRCOND_C computes the infinity norm condition number of op(A)*inv(diag(c)) for symmetric indefinite matrices.

Purpose: 



    CLA_SYRCOND_C Computes the infinity norm condition number of


    op(A) * inv(diag(C)) where C is a REAL 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 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 array, dimension (LDAF,N)


     The block diagonal matrix D and the multipliers used to


     obtain the factor U or L as computed by CSYTRF.

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 CSYTRF.

C



          C is REAL array, dimension (N)


     The vector C in the formula op(A) * inv(diag(C)).

CAPPLY



          CAPPLY is LOGICAL


     If .TRUE. then access the vector C in the formula above.

INFO



          INFO is INTEGER


       = 0:  Successful exit.


     i > 0:  The ith argument is invalid.

WORK



          WORK is COMPLEX array, dimension (2*N).


     Workspace.

RWORK



          RWORK is REAL array, dimension (N).


     Workspace.

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

September 2012

Definition at line 138 of file cla_syrcond_c.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Tue Sep 25 2012 Version 3.4.2