cppt03.f - Man Page

TESTING/LIN/cppt03.f

Synopsis

Functions/Subroutines

subroutine cppt03 (uplo, n, a, ainv, work, ldwork, rwork, rcond, resid)
CPPT03

Function/Subroutine Documentation

subroutine cppt03 (character uplo, integer n, complex, dimension( * ) a, complex, dimension( * ) ainv, complex, dimension( ldwork, * ) work, integer ldwork, real, dimension( * ) rwork, real rcond, real resid)

CPPT03

Purpose:

 CPPT03 computes the residual for a Hermitian 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
          Hermitian 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 array, dimension (N*(N+1)/2)
          The original Hermitian matrix A, stored as a packed
          triangular matrix.

AINV

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

WORK

          WORK is COMPLEX array, dimension (LDWORK,N)

LDWORK

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

RWORK

          RWORK is REAL array, dimension (N)

RCOND

          RCOND is REAL
          The reciprocal of the condition number of A, computed as
          ( 1/norm(A) ) / norm(AINV).

RESID

          RESID is REAL
          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 cppt03.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

The man page cppt03(3) is an alias of cppt03.f(3).

Tue Nov 28 2023 12:08:42 Version 3.12.0 LAPACK