TESTING/LIN/cpot02.f(3)

NAME
TESTING/LIN/cpot02.f

SYNOPSIS

  Functions/Subroutines
subroutine cpot02 (uplo, n, nrhs, a, lda, x, ldx, b, ldb, rwork, resid)
CPOT02

Function/Subroutine Documentation

  subroutine cpot02 (character uplo, integer n, integer nrhs, complex, dimension( lda, * ) a, integer lda, complex, dimension( ldx, * ) x, integer ldx, complex, dimension( ldb, * ) b, integer ldb, real, dimension( * ) rwork, real resid)

CPOT02

Purpose:

     CPOT02 computes the residual for the solution of a Hermitian system
     of linear equations  A*x = b:
        RESID = norm(B - A*X) / ( norm(A) * norm(X) * 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.

    NRHS

              NRHS is INTEGER
              The number of columns of B, the matrix of right hand sides.
              NRHS >= 0.

    A

              A is COMPLEX array, dimension (LDA,N)
              The original Hermitian matrix A.

    LDA

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

    X

              X is COMPLEX array, dimension (LDX,NRHS)
              The computed solution vectors for the system of linear
              equations.

    LDX

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

    B

              B is COMPLEX array, dimension (LDB,NRHS)
              On entry, the right hand side vectors for the system of
              linear equations.
              On exit, B is overwritten with the difference B - A*X.

    LDB

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

    RWORK

              RWORK is REAL array, dimension (N)

    RESID

              RESID is REAL
              The maximum over the number of right hand sides of
              norm(B - A*X) / ( norm(A) * norm(X) * EPS ).

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 125 of file cpot02.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.