iladiag.f

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*> \brief \b ILADIAG
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at 
*            http://www.netlib.org/lapack/explore-html/ 
*
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*
*  Definition:
*  ===========
*
*       INTEGER FUNCTION ILADIAG( DIAG )
* 
*       .. Scalar Arguments ..
*       CHARACTER          DIAG
*       ..
*  
*
*> \par Purpose:
*  =============
*>
*> \verbatim
*>
*> This subroutine translated from a character string specifying if a
*> matrix has unit diagonal or not to the relevant BLAST-specified
*> integer constant.
*>
*> ILADIAG returns an INTEGER.  If ILADIAG < 0, then the input is not a
*> character indicating a unit or non-unit diagonal.  Otherwise ILADIAG
*> returns the constant value corresponding to DIAG.
*> \endverbatim
*
*  Arguments:
*  ==========
*
*
*  Authors:
*  ========
*
*> \author Univ. of Tennessee 
*> \author Univ. of California Berkeley 
*> \author Univ. of Colorado Denver 
*> \author NAG Ltd. 
*
*> \date November 2011
*
*> \ingroup auxOTHERcomputational
*
*  =====================================================================
      INTEGER FUNCTION iladiag( DIAG )
*
*  -- LAPACK computational routine (version 3.4.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2011
*
*     .. Scalar Arguments ..
      CHARACTER          DIAG
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER BLAS_NON_UNIT_DIAG, BLAS_UNIT_DIAG
      parameter( blas_non_unit_diag = 131, blas_unit_diag = 132 )
*     ..
*     .. External Functions ..
      LOGICAL            LSAME
      EXTERNAL           lsame
*     ..
*     .. Executable Statements ..
      IF( lsame( diag, 'N' ) ) THEN
         iladiag = blas_non_unit_diag
      ELSE IF( lsame( diag, 'U' ) ) THEN
         iladiag = blas_unit_diag
      ELSE
         iladiag = -1
      END IF
      RETURN
*
*     End of ILADIAG
*
      END