LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ derrrq()

subroutine derrrq ( character*3  PATH,
integer  NUNIT 
)

DERRRQ

Purpose:
 DERRRQ tests the error exits for the DOUBLE PRECISION routines
 that use the RQ decomposition of a general matrix.
Parameters
[in]PATH
          PATH is CHARACTER*3
          The LAPACK path name for the routines to be tested.
[in]NUNIT
          NUNIT is INTEGER
          The unit number for output.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.

Definition at line 54 of file derrrq.f.

55 *
56 * -- LAPACK test routine --
57 * -- LAPACK is a software package provided by Univ. of Tennessee, --
58 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
59 *
60 * .. Scalar Arguments ..
61  CHARACTER*3 PATH
62  INTEGER NUNIT
63 * ..
64 *
65 * =====================================================================
66 *
67 * .. Parameters ..
68  INTEGER NMAX
69  parameter( nmax = 2 )
70 * ..
71 * .. Local Scalars ..
72  INTEGER I, INFO, J
73 * ..
74 * .. Local Arrays ..
75  DOUBLE PRECISION A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
76  $ W( NMAX ), X( NMAX )
77 * ..
78 * .. External Subroutines ..
79  EXTERNAL alaesm, chkxer, dgerq2, dgerqf, dgerqs, dorgr2,
80  $ dorgrq, dormr2, dormrq
81 * ..
82 * .. Scalars in Common ..
83  LOGICAL LERR, OK
84  CHARACTER*32 SRNAMT
85  INTEGER INFOT, NOUT
86 * ..
87 * .. Common blocks ..
88  COMMON / infoc / infot, nout, ok, lerr
89  COMMON / srnamc / srnamt
90 * ..
91 * .. Intrinsic Functions ..
92  INTRINSIC dble
93 * ..
94 * .. Executable Statements ..
95 *
96  nout = nunit
97  WRITE( nout, fmt = * )
98 *
99 * Set the variables to innocuous values.
100 *
101  DO 20 j = 1, nmax
102  DO 10 i = 1, nmax
103  a( i, j ) = 1.d0 / dble( i+j )
104  af( i, j ) = 1.d0 / dble( i+j )
105  10 CONTINUE
106  b( j ) = 0.d0
107  w( j ) = 0.d0
108  x( j ) = 0.d0
109  20 CONTINUE
110  ok = .true.
111 *
112 * Error exits for RQ factorization
113 *
114 * DGERQF
115 *
116  srnamt = 'DGERQF'
117  infot = 1
118  CALL dgerqf( -1, 0, a, 1, b, w, 1, info )
119  CALL chkxer( 'DGERQF', infot, nout, lerr, ok )
120  infot = 2
121  CALL dgerqf( 0, -1, a, 1, b, w, 1, info )
122  CALL chkxer( 'DGERQF', infot, nout, lerr, ok )
123  infot = 4
124  CALL dgerqf( 2, 1, a, 1, b, w, 2, info )
125  CALL chkxer( 'DGERQF', infot, nout, lerr, ok )
126  infot = 7
127  CALL dgerqf( 2, 1, a, 2, b, w, 1, info )
128  CALL chkxer( 'DGERQF', infot, nout, lerr, ok )
129 *
130 * DGERQ2
131 *
132  srnamt = 'DGERQ2'
133  infot = 1
134  CALL dgerq2( -1, 0, a, 1, b, w, info )
135  CALL chkxer( 'DGERQ2', infot, nout, lerr, ok )
136  infot = 2
137  CALL dgerq2( 0, -1, a, 1, b, w, info )
138  CALL chkxer( 'DGERQ2', infot, nout, lerr, ok )
139  infot = 4
140  CALL dgerq2( 2, 1, a, 1, b, w, info )
141  CALL chkxer( 'DGERQ2', infot, nout, lerr, ok )
142 *
143 * DGERQS
144 *
145  srnamt = 'DGERQS'
146  infot = 1
147  CALL dgerqs( -1, 0, 0, a, 1, x, b, 1, w, 1, info )
148  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
149  infot = 2
150  CALL dgerqs( 0, -1, 0, a, 1, x, b, 1, w, 1, info )
151  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
152  infot = 2
153  CALL dgerqs( 2, 1, 0, a, 2, x, b, 1, w, 1, info )
154  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
155  infot = 3
156  CALL dgerqs( 0, 0, -1, a, 1, x, b, 1, w, 1, info )
157  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
158  infot = 5
159  CALL dgerqs( 2, 2, 0, a, 1, x, b, 2, w, 1, info )
160  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
161  infot = 8
162  CALL dgerqs( 2, 2, 0, a, 2, x, b, 1, w, 1, info )
163  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
164  infot = 10
165  CALL dgerqs( 1, 1, 2, a, 1, x, b, 1, w, 1, info )
166  CALL chkxer( 'DGERQS', infot, nout, lerr, ok )
167 *
168 * DORGRQ
169 *
170  srnamt = 'DORGRQ'
171  infot = 1
172  CALL dorgrq( -1, 0, 0, a, 1, x, w, 1, info )
173  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
174  infot = 2
175  CALL dorgrq( 0, -1, 0, a, 1, x, w, 1, info )
176  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
177  infot = 2
178  CALL dorgrq( 2, 1, 0, a, 2, x, w, 2, info )
179  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
180  infot = 3
181  CALL dorgrq( 0, 0, -1, a, 1, x, w, 1, info )
182  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
183  infot = 3
184  CALL dorgrq( 1, 2, 2, a, 1, x, w, 1, info )
185  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
186  infot = 5
187  CALL dorgrq( 2, 2, 0, a, 1, x, w, 2, info )
188  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
189  infot = 8
190  CALL dorgrq( 2, 2, 0, a, 2, x, w, 1, info )
191  CALL chkxer( 'DORGRQ', infot, nout, lerr, ok )
192 *
193 * DORGR2
194 *
195  srnamt = 'DORGR2'
196  infot = 1
197  CALL dorgr2( -1, 0, 0, a, 1, x, w, info )
198  CALL chkxer( 'DORGR2', infot, nout, lerr, ok )
199  infot = 2
200  CALL dorgr2( 0, -1, 0, a, 1, x, w, info )
201  CALL chkxer( 'DORGR2', infot, nout, lerr, ok )
202  infot = 2
203  CALL dorgr2( 2, 1, 0, a, 2, x, w, info )
204  CALL chkxer( 'DORGR2', infot, nout, lerr, ok )
205  infot = 3
206  CALL dorgr2( 0, 0, -1, a, 1, x, w, info )
207  CALL chkxer( 'DORGR2', infot, nout, lerr, ok )
208  infot = 3
209  CALL dorgr2( 1, 2, 2, a, 2, x, w, info )
210  CALL chkxer( 'DORGR2', infot, nout, lerr, ok )
211  infot = 5
212  CALL dorgr2( 2, 2, 0, a, 1, x, w, info )
213  CALL chkxer( 'DORGR2', infot, nout, lerr, ok )
214 *
215 * DORMRQ
216 *
217  srnamt = 'DORMRQ'
218  infot = 1
219  CALL dormrq( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
220  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
221  infot = 2
222  CALL dormrq( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
223  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
224  infot = 3
225  CALL dormrq( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, 1, info )
226  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
227  infot = 4
228  CALL dormrq( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, 1, info )
229  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
230  infot = 5
231  CALL dormrq( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, 1, info )
232  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
233  infot = 5
234  CALL dormrq( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, 1, info )
235  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
236  infot = 5
237  CALL dormrq( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, 1, info )
238  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
239  infot = 7
240  CALL dormrq( 'L', 'N', 2, 1, 2, a, 1, x, af, 2, w, 1, info )
241  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
242  infot = 7
243  CALL dormrq( 'R', 'N', 1, 2, 2, a, 1, x, af, 1, w, 1, info )
244  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
245  infot = 10
246  CALL dormrq( 'L', 'N', 2, 1, 0, a, 1, x, af, 1, w, 1, info )
247  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
248  infot = 12
249  CALL dormrq( 'L', 'N', 1, 2, 0, a, 1, x, af, 1, w, 1, info )
250  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
251  infot = 12
252  CALL dormrq( 'R', 'N', 2, 1, 0, a, 1, x, af, 2, w, 1, info )
253  CALL chkxer( 'DORMRQ', infot, nout, lerr, ok )
254 *
255 * DORMR2
256 *
257  srnamt = 'DORMR2'
258  infot = 1
259  CALL dormr2( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, info )
260  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
261  infot = 2
262  CALL dormr2( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, info )
263  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
264  infot = 3
265  CALL dormr2( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, info )
266  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
267  infot = 4
268  CALL dormr2( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, info )
269  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
270  infot = 5
271  CALL dormr2( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, info )
272  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
273  infot = 5
274  CALL dormr2( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, info )
275  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
276  infot = 5
277  CALL dormr2( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, info )
278  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
279  infot = 7
280  CALL dormr2( 'L', 'N', 2, 1, 2, a, 1, x, af, 2, w, info )
281  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
282  infot = 7
283  CALL dormr2( 'R', 'N', 1, 2, 2, a, 1, x, af, 1, w, info )
284  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
285  infot = 10
286  CALL dormr2( 'L', 'N', 2, 1, 0, a, 1, x, af, 1, w, info )
287  CALL chkxer( 'DORMR2', infot, nout, lerr, ok )
288 *
289 * Print a summary line.
290 *
291  CALL alaesm( path, ok, nout )
292 *
293  RETURN
294 *
295 * End of DERRRQ
296 *
subroutine chkxer(SRNAMT, INFOT, NOUT, LERR, OK)
Definition: cblat2.f:3196
subroutine alaesm(PATH, OK, NOUT)
ALAESM
Definition: alaesm.f:63
subroutine dgerqs(M, N, NRHS, A, LDA, TAU, B, LDB, WORK, LWORK, INFO)
DGERQS
Definition: dgerqs.f:122
subroutine dgerq2(M, N, A, LDA, TAU, WORK, INFO)
DGERQ2 computes the RQ factorization of a general rectangular matrix using an unblocked algorithm.
Definition: dgerq2.f:123
subroutine dgerqf(M, N, A, LDA, TAU, WORK, LWORK, INFO)
DGERQF
Definition: dgerqf.f:139
subroutine dorgrq(M, N, K, A, LDA, TAU, WORK, LWORK, INFO)
DORGRQ
Definition: dorgrq.f:128
subroutine dormrq(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, LWORK, INFO)
DORMRQ
Definition: dormrq.f:167
subroutine dorgr2(M, N, K, A, LDA, TAU, WORK, INFO)
DORGR2 generates all or part of the orthogonal matrix Q from an RQ factorization determined by sgerqf...
Definition: dorgr2.f:114
subroutine dormr2(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, INFO)
DORMR2 multiplies a general matrix by the orthogonal matrix from a RQ factorization determined by sge...
Definition: dormr2.f:159
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