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zla_syrcond_c.f(3) LAPACK zla_syrcond_c.f(3)

NAME

zla_syrcond_c.f -

SYNOPSIS

Functions/Subroutines


DOUBLE PRECISION function zla_syrcond_c (UPLO, N, A, LDA, AF, LDAF, IPIV, C, CAPPLY, INFO, WORK, RWORK)
 
ZLA_SYRCOND_C

Function/Subroutine Documentation

DOUBLE PRECISION function zla_syrcond_c (characterUPLO, integerN, complex*16, dimension( lda, * )A, integerLDA, complex*16, dimension( ldaf, * )AF, integerLDAF, integer, dimension( * )IPIV, double precision, dimension( * )C, logicalCAPPLY, integerINFO, complex*16, dimension( * )WORK, double precision, dimension( * )RWORK)

ZLA_SYRCOND_C
Purpose:
 
    ZLA_SYRCOND_C Computes the infinity norm condition number of
    op(A) * inv(diag(C)) where C is a DOUBLE PRECISION 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 ZSYTRF.
 
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 ZSYTRF.
 
C
          C is DOUBLE PRECISION 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*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:
November 2011
 
Definition at line 139 of file zla_syrcond_c.f.

Author

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