iladiag()

integer function iladiag

(

character

diag

)

ILADIAG

Download ILADIAG + dependencies [TGZ] [ZIP] [TXT]

Purpose:

!>
!> 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.
!> 

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 55 of file iladiag.f.

*
*  -- 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          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
*

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