SRC/zlanht.f(3)            Library Functions Manual            SRC/zlanht.f(3)

NAME
       SRC/zlanht.f

SYNOPSIS
   Functions/Subroutines
       double precision function zlanht (norm, n, d, e)
           ZLANHT returns the value of the 1-norm, or the Frobenius norm, or
           the infinity norm, or the element of largest absolute value of a
           complex Hermitian tridiagonal matrix.

Function/Subroutine Documentation
   double precision function zlanht (character norm, integer n, double
       precision, dimension( * ) d, complex*16, dimension( * ) e)
       ZLANHT returns the value of the 1-norm, or the Frobenius norm, or the
       infinity norm, or the element of largest absolute value of a complex
       Hermitian tridiagonal matrix.

       Purpose:


           !>
           !> ZLANHT  returns the value of the one norm,  or the Frobenius norm, or
           !> the  infinity norm,  or the  element of  largest absolute value  of a
           !> complex Hermitian tridiagonal matrix A.
           !>

       Returns
           ZLANHT

           !>
           !>    ZLANHT = ( max(abs(A(i,j))), NORM = 'M' or 'm'
           !>             (
           !>             ( norm1(A),         NORM = '1', 'O' or 'o'
           !>             (
           !>             ( normI(A),         NORM = 'I' or 'i'
           !>             (
           !>             ( normF(A),         NORM = 'F', 'f', 'E' or 'e'
           !>
           !> where  norm1  denotes the  one norm of a matrix (maximum column sum),
           !> normI  denotes the  infinity norm  of a matrix  (maximum row sum) and
           !> normF  denotes the  Frobenius norm of a matrix (square root of sum of
           !> squares).  Note that  max(abs(A(i,j)))  is not a consistent matrix norm.
           !>

       Parameters
           NORM

           !>          NORM is CHARACTER*1
           !>          Specifies the value to be returned in ZLANHT as described
           !>          above.
           !>

           N

           !>          N is INTEGER
           !>          The order of the matrix A.  N >= 0.  When N = 0, ZLANHT is
           !>          set to zero.
           !>

           D

           !>          D is DOUBLE PRECISION array, dimension (N)
           !>          The diagonal elements of A.
           !>

           E

           !>          E is COMPLEX*16 array, dimension (N-1)
           !>          The (n-1) sub-diagonal or super-diagonal elements of A.
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 100 of file zlanht.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0                 SRC/zlanht.f(3)