1*> \brief \b DERRLQTP
2*
3*  =========== DOCUMENTATION ===========
4*
5* Online html documentation available at
6*            http://www.netlib.org/lapack/explore-html/
7*
8*  Definition:
9*  ===========
10*
11*       SUBROUTINE SERRLQTP( PATH, NUNIT )
12*
13*       .. Scalar Arguments ..
14*       CHARACTER*3        PATH
15*       INTEGER            NUNIT
16*       ..
17*
18*
19*> \par Purpose:
20*  =============
21*>
22*> \verbatim
23*>
24*> SERRLQTP tests the error exits for the REAL routines
25*> that use the LQT decomposition of a triangular-pentagonal matrix.
26*> \endverbatim
27*
28*  Arguments:
29*  ==========
30*
31*> \param[in] PATH
32*> \verbatim
33*>          PATH is CHARACTER*3
34*>          The LAPACK path name for the routines to be tested.
35*> \endverbatim
36*>
37*> \param[in] NUNIT
38*> \verbatim
39*>          NUNIT is INTEGER
40*>          The unit number for output.
41*> \endverbatim
42*
43*  Authors:
44*  ========
45*
46*> \author Univ. of Tennessee
47*> \author Univ. of California Berkeley
48*> \author Univ. of Colorado Denver
49*> \author NAG Ltd.
50*
51*> \date December 2016
52*
53*> \ingroup double_lin
54*
55*  =====================================================================
56      SUBROUTINE SERRLQTP( PATH, NUNIT )
57      IMPLICIT NONE
58*
59*  -- LAPACK test routine (version 3.7.0) --
60*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
61*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
62*     December 2016
63*
64*     .. Scalar Arguments ..
65      CHARACTER*3        PATH
66      INTEGER            NUNIT
67*     ..
68*
69*  =====================================================================
70*
71*     .. Parameters ..
72      INTEGER            NMAX
73      PARAMETER          ( NMAX = 2 )
74*     ..
75*     .. Local Scalars ..
76      INTEGER            I, INFO, J
77*     ..
78*     .. Local Arrays ..
79      REAL               A( NMAX, NMAX ), T( NMAX, NMAX ), W( NMAX ),
80     $                   B( NMAX, NMAX ), C( NMAX, NMAX )
81*     ..
82*     .. External Subroutines ..
83      EXTERNAL           ALAESM, CHKXER, STPLQT2, STPLQT,
84     $                   STPMLQT
85*     ..
86*     .. Scalars in Common ..
87      LOGICAL            LERR, OK
88      CHARACTER*32       SRNAMT
89      INTEGER            INFOT, NOUT
90*     ..
91*     .. Common blocks ..
92      COMMON             / INFOC / INFOT, NOUT, OK, LERR
93      COMMON             / SRNAMC / SRNAMT
94*     ..
95*     .. Intrinsic Functions ..
96      INTRINSIC          REAL
97*     ..
98*     .. Executable Statements ..
99*
100      NOUT = NUNIT
101      WRITE( NOUT, FMT = * )
102*
103*     Set the variables to innocuous values.
104*
105      DO J = 1, NMAX
106         DO I = 1, NMAX
107            A( I, J ) = 1.D0 / REAL( I+J )
108            C( I, J ) = 1.D0 / REAL( I+J )
109            T( I, J ) = 1.D0 / REAL( I+J )
110         END DO
111         W( J ) = 0.0
112      END DO
113      OK = .TRUE.
114*
115*     Error exits for TPLQT factorization
116*
117*     STPLQT
118*
119      SRNAMT = 'STPLQT'
120      INFOT = 1
121      CALL STPLQT( -1, 1, 0, 1, A, 1, B, 1, T, 1, W, INFO )
122      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
123      INFOT = 2
124      CALL STPLQT( 1, -1, 0, 1, A, 1, B, 1, T, 1, W, INFO )
125      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
126      INFOT = 3
127      CALL STPLQT( 0, 1, -1, 1, A, 1, B, 1, T, 1, W, INFO )
128      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
129      INFOT = 3
130      CALL STPLQT( 0, 1, 1, 1, A, 1, B, 1, T, 1, W, INFO )
131      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
132      INFOT = 4
133      CALL STPLQT( 0, 1, 0, 0, A, 1, B, 1, T, 1, W, INFO )
134      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
135      INFOT = 4
136      CALL STPLQT( 1, 1, 0, 2, A, 1, B, 1, T, 1, W, INFO )
137      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
138      INFOT = 6
139      CALL STPLQT( 2, 1, 0, 2, A, 1, B, 1, T, 1, W, INFO )
140      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
141      INFOT = 8
142      CALL STPLQT( 2, 1, 0, 1, A, 2, B, 1, T, 1, W, INFO )
143      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
144      INFOT = 10
145      CALL STPLQT( 2, 2, 1, 2, A, 2, B, 2, T, 1, W, INFO )
146      CALL CHKXER( 'STPLQT', INFOT, NOUT, LERR, OK )
147*
148*     STPLQT2
149*
150      SRNAMT = 'STPLQT2'
151      INFOT = 1
152      CALL STPLQT2( -1, 0, 0, A, 1, B, 1, T, 1, INFO )
153      CALL CHKXER( 'STPLQT2', INFOT, NOUT, LERR, OK )
154      INFOT = 2
155      CALL STPLQT2( 0, -1, 0, A, 1, B, 1, T, 1, INFO )
156      CALL CHKXER( 'STPLQT2', INFOT, NOUT, LERR, OK )
157      INFOT = 3
158      CALL STPLQT2( 0, 0, -1, A, 1, B, 1, T, 1, INFO )
159      CALL CHKXER( 'STPLQT2', INFOT, NOUT, LERR, OK )
160      INFOT = 5
161      CALL STPLQT2( 2, 2, 0, A, 1, B, 2, T, 2, INFO )
162      CALL CHKXER( 'STPLQT2', INFOT, NOUT, LERR, OK )
163      INFOT = 7
164      CALL STPLQT2( 2, 2, 0, A, 2, B, 1, T, 2, INFO )
165      CALL CHKXER( 'STPLQT2', INFOT, NOUT, LERR, OK )
166      INFOT = 9
167      CALL STPLQT2( 2, 2, 0, A, 2, B, 2, T, 1, INFO )
168      CALL CHKXER( 'STPLQT2', INFOT, NOUT, LERR, OK )
169*
170*     STPMLQT
171*
172      SRNAMT = 'STPMLQT'
173      INFOT = 1
174      CALL STPMLQT( '/', 'N', 0, 0, 0, 0, 1, A, 1, T, 1, B, 1, C, 1,
175     $              W, INFO )
176      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
177      INFOT = 2
178      CALL STPMLQT( 'L', '/', 0, 0, 0, 0, 1, A, 1, T, 1, B, 1, C, 1,
179     $              W, INFO )
180      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
181      INFOT = 3
182      CALL STPMLQT( 'L', 'N', -1, 0, 0, 0, 1, A, 1, T, 1, B, 1, C, 1,
183     $              W, INFO )
184      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
185      INFOT = 4
186      CALL STPMLQT( 'L', 'N', 0, -1, 0, 0, 1, A, 1, T, 1, B, 1, C, 1,
187     $              W, INFO )
188      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
189      INFOT = 5
190      CALL STPMLQT( 'L', 'N', 0, 0, -1, 0, 1, A, 1, T, 1, B, 1, C, 1,
191     $              W, INFO )
192      INFOT = 6
193      CALL STPMLQT( 'L', 'N', 0, 0, 0, -1, 1, A, 1, T, 1, B, 1, C, 1,
194     $              W, INFO )
195      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
196      INFOT = 7
197      CALL STPMLQT( 'L', 'N', 0, 0, 0, 0, 0, A, 1, T, 1, B, 1, C, 1,
198     $              W, INFO )
199      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
200      INFOT = 9
201      CALL STPMLQT( 'R', 'N', 2, 2, 2, 1, 1, A, 1, T, 1, B, 1, C, 1,
202     $              W, INFO )
203      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
204      INFOT = 11
205      CALL STPMLQT( 'R', 'N', 1, 1, 1, 1, 1, A, 1, T, 0, B, 1, C, 1,
206     $              W, INFO )
207      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
208      INFOT = 13
209      CALL STPMLQT( 'L', 'N', 1, 1, 1, 1, 1, A, 1, T, 1, B, 0, C, 1,
210     $              W, INFO )
211      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
212      INFOT = 15
213      CALL STPMLQT( 'L', 'N', 1, 1, 1, 1, 1, A, 1, T, 1, B, 1, C, 0,
214     $              W, INFO )
215      CALL CHKXER( 'STPMLQT', INFOT, NOUT, LERR, OK )
216*
217*     Print a summary line.
218*
219      CALL ALAESM( PATH, OK, NOUT )
220*
221      RETURN
222*
223*     End of SERRLQT
224*
225      END
226