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120 lines
2.9 KiB
120 lines
2.9 KiB
2 years ago
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*> \brief \b LSAMEN
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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 LSAMEN + dependencies
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/lsamen.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/lsamen.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/lsamen.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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* LOGICAL FUNCTION LSAMEN( N, CA, CB )
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*
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* .. Scalar Arguments ..
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* CHARACTER*( * ) CA, CB
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* INTEGER N
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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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*> LSAMEN tests if the first N letters of CA are the same as the
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*> first N letters of CB, regardless of case.
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*> LSAMEN returns .TRUE. if CA and CB are equivalent except for case
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*> and .FALSE. otherwise. LSAMEN also returns .FALSE. if LEN( CA )
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*> or LEN( CB ) is less than N.
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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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*> \param[in] N
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*> \verbatim
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*> N is INTEGER
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*> The number of characters in CA and CB to be compared.
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*> \endverbatim
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*>
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*> \param[in] CA
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*> \verbatim
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*> CA is CHARACTER*(*)
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*> \endverbatim
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*>
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*> \param[in] CB
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*> \verbatim
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*> CB is CHARACTER*(*)
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*> CA and CB specify two character strings of length at least N.
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*> Only the first N characters of each string will be accessed.
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*> \endverbatim
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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 OTHERauxiliary
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*
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* =====================================================================
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LOGICAL FUNCTION LSAMEN( N, CA, CB )
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*
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* -- LAPACK auxiliary 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*( * ) CA, CB
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INTEGER N
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* ..
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*
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* =====================================================================
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*
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* .. Local Scalars ..
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INTEGER I
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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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* .. Intrinsic Functions ..
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INTRINSIC LEN
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* ..
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* .. Executable Statements ..
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*
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LSAMEN = .FALSE.
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IF( LEN( CA ).LT.N .OR. LEN( CB ).LT.N )
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$ GO TO 20
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*
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* Do for each character in the two strings.
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*
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DO 10 I = 1, N
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*
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* Test if the characters are equal using LSAME.
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*
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IF( .NOT.LSAME( CA( I: I ), CB( I: I ) ) )
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$ GO TO 20
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*
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10 CONTINUE
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LSAMEN = .TRUE.
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*
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20 CONTINUE
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RETURN
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*
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* End of LSAMEN
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*
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END
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