[BACK]Return to dlantp.f CVS log [TXT] [DIR] Up to [local] / rpl / lapack / lapack

Diff for /rpl/lapack/lapack/dlantp.f between versions 1.7 and 1.8

version 1.7, 2010/12/21 13:53:30 version 1.8, 2011/11/21 20:42:56
Line 1 Line 1
   *> \brief \b DLANTP
   *
   *  =========== DOCUMENTATION ===========
   *
   * Online html documentation available at 
   *            http://www.netlib.org/lapack/explore-html/ 
   *
   *> \htmlonly
   *> Download DLANTP + dependencies 
   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlantp.f"> 
   *> [TGZ]</a> 
   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlantp.f"> 
   *> [ZIP]</a> 
   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlantp.f"> 
   *> [TXT]</a>
   *> \endhtmlonly 
   *
   *  Definition:
   *  ===========
   *
   *       DOUBLE PRECISION FUNCTION DLANTP( NORM, UPLO, DIAG, N, AP, WORK )
   * 
   *       .. Scalar Arguments ..
   *       CHARACTER          DIAG, NORM, UPLO
   *       INTEGER            N
   *       ..
   *       .. Array Arguments ..
   *       DOUBLE PRECISION   AP( * ), WORK( * )
   *       ..
   *  
   *
   *> \par Purpose:
   *  =============
   *>
   *> \verbatim
   *>
   *> DLANTP  returns the value of the one norm,  or the Frobenius norm, or
   *> the  infinity norm,  or the  element of  largest absolute value  of a
   *> triangular matrix A, supplied in packed form.
   *> \endverbatim
   *>
   *> \return DLANTP
   *> \verbatim
   *>
   *>    DLANTP = ( 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.
   *> \endverbatim
   *
   *  Arguments:
   *  ==========
   *
   *> \param[in] NORM
   *> \verbatim
   *>          NORM is CHARACTER*1
   *>          Specifies the value to be returned in DLANTP as described
   *>          above.
   *> \endverbatim
   *>
   *> \param[in] UPLO
   *> \verbatim
   *>          UPLO is CHARACTER*1
   *>          Specifies whether the matrix A is upper or lower triangular.
   *>          = 'U':  Upper triangular
   *>          = 'L':  Lower triangular
   *> \endverbatim
   *>
   *> \param[in] DIAG
   *> \verbatim
   *>          DIAG is CHARACTER*1
   *>          Specifies whether or not the matrix A is unit triangular.
   *>          = 'N':  Non-unit triangular
   *>          = 'U':  Unit triangular
   *> \endverbatim
   *>
   *> \param[in] N
   *> \verbatim
   *>          N is INTEGER
   *>          The order of the matrix A.  N >= 0.  When N = 0, DLANTP is
   *>          set to zero.
   *> \endverbatim
   *>
   *> \param[in] AP
   *> \verbatim
   *>          AP is DOUBLE PRECISION array, dimension (N*(N+1)/2)
   *>          The upper or lower triangular matrix A, packed columnwise in
   *>          a linear array.  The j-th column of A is stored in the array
   *>          AP as follows:
   *>          if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;
   *>          if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.
   *>          Note that when DIAG = 'U', the elements of the array AP
   *>          corresponding to the diagonal elements of the matrix A are
   *>          not referenced, but are assumed to be one.
   *> \endverbatim
   *>
   *> \param[out] WORK
   *> \verbatim
   *>          WORK is DOUBLE PRECISION array, dimension (MAX(1,LWORK)),
   *>          where LWORK >= N when NORM = 'I'; otherwise, WORK is not
   *>          referenced.
   *> \endverbatim
   *
   *  Authors:
   *  ========
   *
   *> \author Univ. of Tennessee 
   *> \author Univ. of California Berkeley 
   *> \author Univ. of Colorado Denver 
   *> \author NAG Ltd. 
   *
   *> \date November 2011
   *
   *> \ingroup doubleOTHERauxiliary
   *
   *  =====================================================================
       DOUBLE PRECISION FUNCTION DLANTP( NORM, UPLO, DIAG, N, AP, WORK )        DOUBLE PRECISION FUNCTION DLANTP( NORM, UPLO, DIAG, N, AP, WORK )
 *  *
 *  -- LAPACK auxiliary routine (version 3.2) --  *  -- LAPACK auxiliary routine (version 3.4.0) --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --  *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--  *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
 *     November 2006  *     November 2011
 *  *
 *     .. Scalar Arguments ..  *     .. Scalar Arguments ..
       CHARACTER          DIAG, NORM, UPLO        CHARACTER          DIAG, NORM, UPLO
Line 13 Line 137
       DOUBLE PRECISION   AP( * ), WORK( * )        DOUBLE PRECISION   AP( * ), WORK( * )
 *     ..  *     ..
 *  *
 *  Purpose  
 *  =======  
 *  
 *  DLANTP  returns the value of the one norm,  or the Frobenius norm, or  
 *  the  infinity norm,  or the  element of  largest absolute value  of a  
 *  triangular matrix A, supplied in packed form.  
 *  
 *  Description  
 *  ===========  
 *  
 *  DLANTP returns the value  
 *  
 *     DLANTP = ( 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.  
 *  
 *  Arguments  
 *  =========  
 *  
 *  NORM    (input) CHARACTER*1  
 *          Specifies the value to be returned in DLANTP as described  
 *          above.  
 *  
 *  UPLO    (input) CHARACTER*1  
 *          Specifies whether the matrix A is upper or lower triangular.  
 *          = 'U':  Upper triangular  
 *          = 'L':  Lower triangular  
 *  
 *  DIAG    (input) CHARACTER*1  
 *          Specifies whether or not the matrix A is unit triangular.  
 *          = 'N':  Non-unit triangular  
 *          = 'U':  Unit triangular  
 *  
 *  N       (input) INTEGER  
 *          The order of the matrix A.  N >= 0.  When N = 0, DLANTP is  
 *          set to zero.  
 *  
 *  AP      (input) DOUBLE PRECISION array, dimension (N*(N+1)/2)  
 *          The upper or lower triangular matrix A, packed columnwise in  
 *          a linear array.  The j-th column of A is stored in the array  
 *          AP as follows:  
 *          if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;  
 *          if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.  
 *          Note that when DIAG = 'U', the elements of the array AP  
 *          corresponding to the diagonal elements of the matrix A are  
 *          not referenced, but are assumed to be one.  
 *  
 *  WORK    (workspace) DOUBLE PRECISION array, dimension (MAX(1,LWORK)),  
 *          where LWORK >= N when NORM = 'I'; otherwise, WORK is not  
 *          referenced.  
 *  
 * =====================================================================  * =====================================================================
 *  *
 *     .. Parameters ..  *     .. Parameters ..
Removed from v.1.7  
changed lines
  Added in v.1.8

CVSweb interface <joel.bertrand@systella.fr>