1*> \brief \b CERRQRT
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 CERRQRT( 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*> CERRQRT tests the error exits for the COMPLEX routines
25*> that use the QRT decomposition of a general 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*> \ingroup complex_lin
52*
53*  =====================================================================
54      SUBROUTINE CERRQRT( PATH, NUNIT )
55      IMPLICIT NONE
56*
57*  -- LAPACK test routine --
58*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
59*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
60*
61*     .. Scalar Arguments ..
62      CHARACTER*3        PATH
63      INTEGER            NUNIT
64*     ..
65*
66*  =====================================================================
67*
68*     .. Parameters ..
69      INTEGER            NMAX
70      PARAMETER          ( NMAX = 2 )
71*     ..
72*     .. Local Scalars ..
73      INTEGER            I, INFO, J
74*     ..
75*     .. Local Arrays ..
76      COMPLEX            A( NMAX, NMAX ), T( NMAX, NMAX ), W( NMAX ),
77     $                   C( NMAX, NMAX )
78*     ..
79*     .. External Subroutines ..
80      EXTERNAL           ALAESM, CHKXER, CGEQRT2, CGEQRT3, CGEQRT,
81     $                   CGEMQRT
82*     ..
83*     .. Scalars in Common ..
84      LOGICAL            LERR, OK
85      CHARACTER*32       SRNAMT
86      INTEGER            INFOT, NOUT
87*     ..
88*     .. Common blocks ..
89      COMMON             / INFOC / INFOT, NOUT, OK, LERR
90      COMMON             / SRNAMC / SRNAMT
91*     ..
92*     .. Intrinsic Functions ..
93      INTRINSIC          FLOAT, CMPLX
94*     ..
95*     .. Executable Statements ..
96*
97      NOUT = NUNIT
98      WRITE( NOUT, FMT = * )
99*
100*     Set the variables to innocuous values.
101*
102      DO J = 1, NMAX
103         DO I = 1, NMAX
104            A( I, J ) = 1.0 / CMPLX( FLOAT(I+J), 0.0 )
105            C( I, J ) = 1.0 / CMPLX( FLOAT(I+J), 0.0 )
106            T( I, J ) = 1.0 / CMPLX( FLOAT(I+J), 0.0 )
107         END DO
108         W( J ) = 0.0
109      END DO
110      OK = .TRUE.
111*
112*     Error exits for QRT factorization
113*
114*     CGEQRT
115*
116      SRNAMT = 'CGEQRT'
117      INFOT = 1
118      CALL CGEQRT( -1, 0, 1, A, 1, T, 1, W, INFO )
119      CALL CHKXER( 'CGEQRT', INFOT, NOUT, LERR, OK )
120      INFOT = 2
121      CALL CGEQRT( 0, -1, 1, A, 1, T, 1, W, INFO )
122      CALL CHKXER( 'CGEQRT', INFOT, NOUT, LERR, OK )
123      INFOT = 3
124      CALL CGEQRT( 0, 0, 0, A, 1, T, 1, W, INFO )
125      CALL CHKXER( 'CGEQRT', INFOT, NOUT, LERR, OK )
126      INFOT = 5
127      CALL CGEQRT( 2, 1, 1, A, 1, T, 1, W, INFO )
128      CALL CHKXER( 'CGEQRT', INFOT, NOUT, LERR, OK )
129      INFOT = 7
130      CALL CGEQRT( 2, 2, 2, A, 2, T, 1, W, INFO )
131      CALL CHKXER( 'CGEQRT', INFOT, NOUT, LERR, OK )
132*
133*     CGEQRT2
134*
135      SRNAMT = 'CGEQRT2'
136      INFOT = 1
137      CALL CGEQRT2( -1, 0, A, 1, T, 1, INFO )
138      CALL CHKXER( 'CGEQRT2', INFOT, NOUT, LERR, OK )
139      INFOT = 2
140      CALL CGEQRT2( 0, -1, A, 1, T, 1, INFO )
141      CALL CHKXER( 'CGEQRT2', INFOT, NOUT, LERR, OK )
142      INFOT = 4
143      CALL CGEQRT2( 2, 1, A, 1, T, 1, INFO )
144      CALL CHKXER( 'CGEQRT2', INFOT, NOUT, LERR, OK )
145      INFOT = 6
146      CALL CGEQRT2( 2, 2, A, 2, T, 1, INFO )
147      CALL CHKXER( 'CGEQRT2', INFOT, NOUT, LERR, OK )
148*
149*     CGEQRT3
150*
151      SRNAMT = 'CGEQRT3'
152      INFOT = 1
153      CALL CGEQRT3( -1, 0, A, 1, T, 1, INFO )
154      CALL CHKXER( 'CGEQRT3', INFOT, NOUT, LERR, OK )
155      INFOT = 2
156      CALL CGEQRT3( 0, -1, A, 1, T, 1, INFO )
157      CALL CHKXER( 'CGEQRT3', INFOT, NOUT, LERR, OK )
158      INFOT = 4
159      CALL CGEQRT3( 2, 1, A, 1, T, 1, INFO )
160      CALL CHKXER( 'CGEQRT3', INFOT, NOUT, LERR, OK )
161      INFOT = 6
162      CALL CGEQRT3( 2, 2, A, 2, T, 1, INFO )
163      CALL CHKXER( 'CGEQRT3', INFOT, NOUT, LERR, OK )
164*
165*     CGEMQRT
166*
167      SRNAMT = 'CGEMQRT'
168      INFOT = 1
169      CALL CGEMQRT( '/', 'N', 0, 0, 0, 1, A, 1, T, 1, C, 1, W, INFO )
170      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
171      INFOT = 2
172      CALL CGEMQRT( 'L', '/', 0, 0, 0, 1, A, 1, T, 1, C, 1, W, INFO )
173      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
174      INFOT = 3
175      CALL CGEMQRT( 'L', 'N', -1, 0, 0, 1, A, 1, T, 1, C, 1, W, INFO )
176      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
177      INFOT = 4
178      CALL CGEMQRT( 'L', 'N', 0, -1, 0, 1, A, 1, T, 1, C, 1, W, INFO )
179      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
180      INFOT = 5
181      CALL CGEMQRT( 'L', 'N', 0, 0, -1, 1, A, 1, T, 1, C, 1, W, INFO )
182      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
183      INFOT = 5
184      CALL CGEMQRT( 'R', 'N', 0, 0, -1, 1, A, 1, T, 1, C, 1, W, INFO )
185      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
186      INFOT = 6
187      CALL CGEMQRT( 'L', 'N', 0, 0, 0, 0, A, 1, T, 1, C, 1, W, INFO )
188      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
189      INFOT = 8
190      CALL CGEMQRT( 'R', 'N', 1, 2, 1, 1, A, 1, T, 1, C, 1, W, INFO )
191      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
192      INFOT = 8
193      CALL CGEMQRT( 'L', 'N', 2, 1, 1, 1, A, 1, T, 1, C, 1, W, INFO )
194      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
195      INFOT = 10
196      CALL CGEMQRT( 'R', 'N', 1, 1, 1, 1, A, 1, T, 0, C, 1, W, INFO )
197      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
198      INFOT = 12
199      CALL CGEMQRT( 'L', 'N', 1, 1, 1, 1, A, 1, T, 1, C, 0, W, INFO )
200      CALL CHKXER( 'CGEMQRT', INFOT, NOUT, LERR, OK )
201*
202*     Print a summary line.
203*
204      CALL ALAESM( PATH, OK, NOUT )
205*
206      RETURN
207*
208*     End of CERRQRT
209*
210      END
211