TESTING/LIN/zspt03.f(3) Library Functions Manual TESTING/LIN/zspt03.f(3)

TESTING/LIN/zspt03.f


subroutine zspt03 (uplo, n, a, ainv, work, ldw, rwork, rcond, resid)
ZSPT03

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.

Generated automatically by Doxygen for LAPACK from the source code.

Version 3.12.0 LAPACK