LAPACK 3.3.1 Linear Algebra PACKage

# lsamen.f

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```00001       LOGICAL          FUNCTION LSAMEN( N, CA, CB )
00002 *
00003 *  -- LAPACK auxiliary routine (version 3.2) --
00004 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
00005 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
00006 *     November 2006
00007 *
00008 *     .. Scalar Arguments ..
00009       CHARACTER*( * )    CA, CB
00010       INTEGER            N
00011 *     ..
00012 *
00013 *  Purpose
00014 *  =======
00015 *
00016 *  LSAMEN  tests if the first N letters of CA are the same as the
00017 *  first N letters of CB, regardless of case.
00018 *  LSAMEN returns .TRUE. if CA and CB are equivalent except for case
00019 *  and .FALSE. otherwise.  LSAMEN also returns .FALSE. if LEN( CA )
00020 *  or LEN( CB ) is less than N.
00021 *
00022 *  Arguments
00023 *  =========
00024 *
00025 *  N       (input) INTEGER
00026 *          The number of characters in CA and CB to be compared.
00027 *
00028 *  CA      (input) CHARACTER*(*)
00029 *  CB      (input) CHARACTER*(*)
00030 *          CA and CB specify two character strings of length at least N.
00031 *          Only the first N characters of each string will be accessed.
00032 *
00033 * =====================================================================
00034 *
00035 *     .. Local Scalars ..
00036       INTEGER            I
00037 *     ..
00038 *     .. External Functions ..
00039       LOGICAL            LSAME
00040       EXTERNAL           LSAME
00041 *     ..
00042 *     .. Intrinsic Functions ..
00043       INTRINSIC          LEN
00044 *     ..
00045 *     .. Executable Statements ..
00046 *
00047       LSAMEN = .FALSE.
00048       IF( LEN( CA ).LT.N .OR. LEN( CB ).LT.N )
00049      \$   GO TO 20
00050 *
00051 *     Do for each character in the two strings.
00052 *
00053       DO 10 I = 1, N
00054 *
00055 *        Test if the characters are equal using LSAME.
00056 *
00057          IF( .NOT.LSAME( CA( I: I ), CB( I: I ) ) )
00058      \$      GO TO 20
00059 *
00060    10 CONTINUE
00061       LSAMEN = .TRUE.
00062 *
00063    20 CONTINUE
00064       RETURN
00065 *
00066 *     End of LSAMEN
00067 *
00068       END
```