zspt03.f - Man Page

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

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

The man page zspt03(3) is an alias of zspt03.f(3).

Tue Nov 28 2023 12:08:43 Version 3.12.0 LAPACK