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90 lines
2.3 KiB
90 lines
2.3 KiB
2 years ago
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*> \brief \b ILADIAG
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*
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* =========== DOCUMENTATION ===========
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*
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* Online html documentation available at
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* http://www.netlib.org/lapack/explore-html/
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*
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*> \htmlonly
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*> Download ILADIAG + dependencies
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/iladiag.f">
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*> [TGZ]</a>
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/iladiag.f">
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*> [ZIP]</a>
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/iladiag.f">
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*> [TXT]</a>
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*> \endhtmlonly
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*
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* Definition:
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* ===========
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*
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* INTEGER FUNCTION ILADIAG( DIAG )
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*
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* .. Scalar Arguments ..
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* CHARACTER DIAG
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* ..
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*
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*
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*> \par Purpose:
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* =============
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*>
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*> \verbatim
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*>
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*> This subroutine translated from a character string specifying if a
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*> matrix has unit diagonal or not to the relevant BLAST-specified
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*> integer constant.
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*>
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*> ILADIAG returns an INTEGER. If ILADIAG < 0, then the input is not a
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*> character indicating a unit or non-unit diagonal. Otherwise ILADIAG
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*> returns the constant value corresponding to DIAG.
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*> \endverbatim
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*
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* Arguments:
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* ==========
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*
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*
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* Authors:
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* ========
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*
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*> \author Univ. of Tennessee
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*> \author Univ. of California Berkeley
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*> \author Univ. of Colorado Denver
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*> \author NAG Ltd.
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*
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*> \ingroup auxOTHERcomputational
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*
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* =====================================================================
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INTEGER FUNCTION ILADIAG( DIAG )
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*
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* -- LAPACK computational routine --
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* -- LAPACK is a software package provided by Univ. of Tennessee, --
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* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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*
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* .. Scalar Arguments ..
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CHARACTER DIAG
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* ..
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*
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* =====================================================================
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*
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* .. Parameters ..
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INTEGER BLAS_NON_UNIT_DIAG, BLAS_UNIT_DIAG
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PARAMETER ( BLAS_NON_UNIT_DIAG = 131, BLAS_UNIT_DIAG = 132 )
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* ..
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* .. External Functions ..
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LOGICAL LSAME
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EXTERNAL LSAME
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* ..
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* .. Executable Statements ..
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IF( LSAME( DIAG, 'N' ) ) THEN
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ILADIAG = BLAS_NON_UNIT_DIAG
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ELSE IF( LSAME( DIAG, 'U' ) ) THEN
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ILADIAG = BLAS_UNIT_DIAG
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ELSE
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ILADIAG = -1
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END IF
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RETURN
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*
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* End of ILADIAG
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*
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END
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