ilauplo.f

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*> \brief \b ILAUPLO
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at
*            http://www.netlib.org/lapack/explore-html/
*
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*
*  Definition:
*  ===========
*
*       INTEGER FUNCTION ILAUPLO( UPLO )
*
*       .. Scalar Arguments ..
*       CHARACTER          UPLO
*       ..
*
*
*> \par Purpose:
*  =============
*>
*> \verbatim
*>
*> This subroutine translated from a character string specifying a
*> upper- or lower-triangular matrix to the relevant BLAST-specified
*> integer constant.
*>
*> ILAUPLO returns an INTEGER.  If ILAUPLO < 0, then the input is not
*> a character indicating an upper- or lower-triangular matrix.
*> Otherwise ILAUPLO returns the constant value corresponding to UPLO.
*> \endverbatim
*
*  Arguments:
*  ==========
*
*
*  Authors:
*  ========
*
*> \author Univ. of Tennessee
*> \author Univ. of California Berkeley
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup ilauplo
*
*  =====================================================================
      INTEGER FUNCTION ilauplo( UPLO )
*
*  -- LAPACK computational routine --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
*     .. Scalar Arguments ..
      CHARACTER          uplo
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER blas_upper, blas_lower
      parameter( blas_upper = 121, blas_lower = 122 )
*     ..
*     .. External Functions ..
      LOGICAL            lsame
      EXTERNAL           lsame
*     ..
*     .. Executable Statements ..
      IF( lsame( uplo, 'U' ) ) THEN
         ilauplo = blas_upper
      ELSE IF( lsame( uplo, 'L' ) ) THEN
         ilauplo = blas_lower
      ELSE
         ilauplo = -1
      END IF
      RETURN
*
*     End of ILAUPLO
*
      END