summaryrefslogtreecommitdiff
path: root/SRC/lsamen.f
blob: c2405337ef365a02f7c6d16617775fc71173bf92 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
*> \brief \b LSAMEN
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at 
*            http://www.netlib.org/lapack/explore-html/ 
*
*> Download LSAMEN + dependencies 
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/lsamen.f"> 
*> [TGZ]</a> 
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/lsamen.f"> 
*> [ZIP]</a> 
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/lsamen.f"> 
*> [TXT]</a> 
*
*  Definition
*  ==========
*
*       LOGICAL          FUNCTION LSAMEN( N, CA, CB )
* 
*       .. Scalar Arguments ..
*       CHARACTER*( * )    CA, CB
*       INTEGER            N
*       ..
*  
*  Purpose
*  =======
*
*>\details \b Purpose:
*>\verbatim
*>
*> LSAMEN  tests if the first N letters of CA are the same as the
*> first N letters of CB, regardless of case.
*> LSAMEN returns .TRUE. if CA and CB are equivalent except for case
*> and .FALSE. otherwise.  LSAMEN also returns .FALSE. if LEN( CA )
*> or LEN( CB ) is less than N.
*>
*>\endverbatim
*
*  Arguments
*  =========
*
*> \param[in] N
*> \verbatim
*>          N is INTEGER
*>          The number of characters in CA and CB to be compared.
*> \endverbatim
*>
*> \param[in] CA
*> \verbatim
*>          CA is CHARACTER*(*)
*> \endverbatim
*>
*> \param[in] CB
*> \verbatim
*>          CB is CHARACTER*(*)
*>          CA and CB specify two character strings of length at least N.
*>          Only the first N characters of each string will be accessed.
*> \endverbatim
*>
*
*  Authors
*  =======
*
*> \author Univ. of Tennessee 
*> \author Univ. of California Berkeley 
*> \author Univ. of Colorado Denver 
*> \author NAG Ltd. 
*
*> \date November 2011
*
*> \ingroup auxOTHERauxiliary
*
*  =====================================================================
      LOGICAL          FUNCTION LSAMEN( N, CA, CB )
*
*  -- LAPACK auxiliary routine (version 3.2) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2011
*
*     .. Scalar Arguments ..
      CHARACTER*( * )    CA, CB
      INTEGER            N
*     ..
*
* =====================================================================
*
*     .. Local Scalars ..
      INTEGER            I
*     ..
*     .. External Functions ..
      LOGICAL            LSAME
      EXTERNAL           LSAME
*     ..
*     .. Intrinsic Functions ..
      INTRINSIC          LEN
*     ..
*     .. Executable Statements ..
*
      LSAMEN = .FALSE.
      IF( LEN( CA ).LT.N .OR. LEN( CB ).LT.N )
     $   GO TO 20
*
*     Do for each character in the two strings.
*
      DO 10 I = 1, N
*
*        Test if the characters are equal using LSAME.
*
         IF( .NOT.LSAME( CA( I: I ), CB( I: I ) ) )
     $      GO TO 20
*
   10 CONTINUE
      LSAMEN = .TRUE.
*
   20 CONTINUE
      RETURN
*
*     End of LSAMEN
*
      END