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/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/zspt03.f(3) Library Functions Manual /home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/zspt03.f(3)

NAME

/home/abuild/rpmbuild/BUILD/lapack-3.12.0/TESTING/LIN/zspt03.f

SYNOPSIS

Functions/Subroutines


subroutine ZSPT03 (uplo, n, a, ainv, work, ldw, rwork, rcond, resid)
ZSPT03

Function/Subroutine Documentation

subroutine ZSPT03 (character uplo, integer n, complex*16, dimension( * ) a, complex*16, dimension( * ) ainv, complex*16, dimension( ldw, * ) work, integer ldw, double precision, dimension( * ) rwork, double precision rcond, double precision resid)

ZSPT03

Purpose:

!>
!> ZSPT03 computes the residual for a complex symmetric packed matrix
!> times its inverse:
!>    norm( I - A*AINV ) / ( N * norm(A) * norm(AINV) * EPS ),
!> where EPS is the machine epsilon.
!> 

Parameters

UPLO

!>          UPLO is CHARACTER*1
!>          Specifies whether the upper or lower triangular part of the
!>          complex symmetric matrix A is stored:
!>          = 'U':  Upper triangular
!>          = 'L':  Lower triangular
!> 

N

!>          N is INTEGER
!>          The number of rows and columns of the matrix A.  N >= 0.
!> 

A

!>          A is COMPLEX*16 array, dimension (N*(N+1)/2)
!>          The original complex symmetric matrix A, stored as a packed
!>          triangular matrix.
!> 

AINV

!>          AINV is COMPLEX*16 array, dimension (N*(N+1)/2)
!>          The (symmetric) inverse of the matrix A, stored as a packed
!>          triangular matrix.
!> 

WORK

!>          WORK is COMPLEX*16 array, dimension (LDW,N)
!> 

LDW

!>          LDW is INTEGER
!>          The leading dimension of the array WORK.  LDW >= max(1,N).
!> 

RWORK

!>          RWORK is DOUBLE PRECISION array, dimension (N)
!> 

RCOND

!>          RCOND is DOUBLE PRECISION
!>          The reciprocal of the condition number of A, computed as
!>          ( 1/norm(A) ) / norm(AINV).
!> 

RESID

!>          RESID is DOUBLE PRECISION
!>          norm(I - A*AINV) / ( N * norm(A) * norm(AINV) * EPS )
!> 

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 108 of file zspt03.f.

Author

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Version 3.12.0 LAPACK