--- 
:name: clangt
:md5sum: 652ea6ab81e8f71ce9bebc5bc9493bb5
:category: :function
:type: real
:arguments: 
- norm: 
    :type: char
    :intent: input
- n: 
    :type: integer
    :intent: input
- dl: 
    :type: complex
    :intent: input
    :dims: 
    - n-1
- d: 
    :type: complex
    :intent: input
    :dims: 
    - n
- du: 
    :type: complex
    :intent: input
    :dims: 
    - n-1
:substitutions: {}

:fortran_help: "      REAL             FUNCTION CLANGT( NORM, N, DL, D, DU )\n\n\
  *  Purpose\n\
  *  =======\n\
  *\n\
  *  CLANGT  returns the value of the one norm,  or the Frobenius norm, or\n\
  *  the  infinity norm,  or the  element of  largest absolute value  of a\n\
  *  complex tridiagonal matrix A.\n\
  *\n\
  *  Description\n\
  *  ===========\n\
  *\n\
  *  CLANGT returns the value\n\
  *\n\
  *     CLANGT = ( max(abs(A(i,j))), NORM = 'M' or 'm'\n\
  *              (\n\
  *              ( norm1(A),         NORM = '1', 'O' or 'o'\n\
  *              (\n\
  *              ( normI(A),         NORM = 'I' or 'i'\n\
  *              (\n\
  *              ( normF(A),         NORM = 'F', 'f', 'E' or 'e'\n\
  *\n\
  *  where  norm1  denotes the  one norm of a matrix (maximum column sum),\n\
  *  normI  denotes the  infinity norm  of a matrix  (maximum row sum) and\n\
  *  normF  denotes the  Frobenius norm of a matrix (square root of sum of\n\
  *  squares).  Note that  max(abs(A(i,j)))  is not a consistent matrix norm.\n\
  *\n\n\
  *  Arguments\n\
  *  =========\n\
  *\n\
  *  NORM    (input) CHARACTER*1\n\
  *          Specifies the value to be returned in CLANGT as described\n\
  *          above.\n\
  *\n\
  *  N       (input) INTEGER\n\
  *          The order of the matrix A.  N >= 0.  When N = 0, CLANGT is\n\
  *          set to zero.\n\
  *\n\
  *  DL      (input) COMPLEX array, dimension (N-1)\n\
  *          The (n-1) sub-diagonal elements of A.\n\
  *\n\
  *  D       (input) COMPLEX array, dimension (N)\n\
  *          The diagonal elements of A.\n\
  *\n\
  *  DU      (input) COMPLEX array, dimension (N-1)\n\
  *          The (n-1) super-diagonal elements of A.\n\
  *\n\n\
  *  =====================================================================\n\
  *\n"
