LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ derrqr()

subroutine derrqr ( character*3  PATH,
integer  NUNIT 
)

DERRQR

Purpose:
 DERRQR tests the error exits for the DOUBLE PRECISION routines
 that use the QR 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 derrqr.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, dgeqr2, dgeqr2p, dgeqrf,
81  $ dormqr
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 dble
94 * ..
95 * .. Executable Statements ..
96 *
97  nout = nunit
98  WRITE( nout, fmt = * )
99 *
100 * Set the variables to innocuous values.
101 *
102  DO 20 j = 1, nmax
103  DO 10 i = 1, nmax
104  a( i, j ) = 1.d0 / dble( i+j )
105  af( i, j ) = 1.d0 / dble( i+j )
106  10 CONTINUE
107  b( j ) = 0.d0
108  w( j ) = 0.d0
109  x( j ) = 0.d0
110  20 CONTINUE
111  ok = .true.
112 *
113 * Error exits for QR factorization
114 *
115 * DGEQRF
116 *
117  srnamt = 'DGEQRF'
118  infot = 1
119  CALL dgeqrf( -1, 0, a, 1, b, w, 1, info )
120  CALL chkxer( 'DGEQRF', infot, nout, lerr, ok )
121  infot = 2
122  CALL dgeqrf( 0, -1, a, 1, b, w, 1, info )
123  CALL chkxer( 'DGEQRF', infot, nout, lerr, ok )
124  infot = 4
125  CALL dgeqrf( 2, 1, a, 1, b, w, 1, info )
126  CALL chkxer( 'DGEQRF', infot, nout, lerr, ok )
127  infot = 7
128  CALL dgeqrf( 1, 2, a, 1, b, w, 1, info )
129  CALL chkxer( 'DGEQRF', infot, nout, lerr, ok )
130 *
131 * DGEQRFP
132 *
133  srnamt = 'DGEQRFP'
134  infot = 1
135  CALL dgeqrfp( -1, 0, a, 1, b, w, 1, info )
136  CALL chkxer( 'DGEQRFP', infot, nout, lerr, ok )
137  infot = 2
138  CALL dgeqrfp( 0, -1, a, 1, b, w, 1, info )
139  CALL chkxer( 'DGEQRFP', infot, nout, lerr, ok )
140  infot = 4
141  CALL dgeqrfp( 2, 1, a, 1, b, w, 1, info )
142  CALL chkxer( 'DGEQRFP', infot, nout, lerr, ok )
143  infot = 7
144  CALL dgeqrfp( 1, 2, a, 1, b, w, 1, info )
145  CALL chkxer( 'DGEQRFP', infot, nout, lerr, ok )
146 *
147 * DGEQR2
148 *
149  srnamt = 'DGEQR2'
150  infot = 1
151  CALL dgeqr2( -1, 0, a, 1, b, w, info )
152  CALL chkxer( 'DGEQR2', infot, nout, lerr, ok )
153  infot = 2
154  CALL dgeqr2( 0, -1, a, 1, b, w, info )
155  CALL chkxer( 'DGEQR2', infot, nout, lerr, ok )
156  infot = 4
157  CALL dgeqr2( 2, 1, a, 1, b, w, info )
158  CALL chkxer( 'DGEQR2', infot, nout, lerr, ok )
159 *
160 * DGEQR2P
161 *
162  srnamt = 'DGEQR2P'
163  infot = 1
164  CALL dgeqr2p( -1, 0, a, 1, b, w, info )
165  CALL chkxer( 'DGEQR2P', infot, nout, lerr, ok )
166  infot = 2
167  CALL dgeqr2p( 0, -1, a, 1, b, w, info )
168  CALL chkxer( 'DGEQR2P', infot, nout, lerr, ok )
169  infot = 4
170  CALL dgeqr2p( 2, 1, a, 1, b, w, info )
171  CALL chkxer( 'DGEQR2P', infot, nout, lerr, ok )
172 *
173 * DGEQRS
174 *
175  srnamt = 'DGEQRS'
176  infot = 1
177  CALL dgeqrs( -1, 0, 0, a, 1, x, b, 1, w, 1, info )
178  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
179  infot = 2
180  CALL dgeqrs( 0, -1, 0, a, 1, x, b, 1, w, 1, info )
181  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
182  infot = 2
183  CALL dgeqrs( 1, 2, 0, a, 2, x, b, 2, w, 1, info )
184  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
185  infot = 3
186  CALL dgeqrs( 0, 0, -1, a, 1, x, b, 1, w, 1, info )
187  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
188  infot = 5
189  CALL dgeqrs( 2, 1, 0, a, 1, x, b, 2, w, 1, info )
190  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
191  infot = 8
192  CALL dgeqrs( 2, 1, 0, a, 2, x, b, 1, w, 1, info )
193  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
194  infot = 10
195  CALL dgeqrs( 1, 1, 2, a, 1, x, b, 1, w, 1, info )
196  CALL chkxer( 'DGEQRS', infot, nout, lerr, ok )
197 *
198 * DORGQR
199 *
200  srnamt = 'DORGQR'
201  infot = 1
202  CALL dorgqr( -1, 0, 0, a, 1, x, w, 1, info )
203  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
204  infot = 2
205  CALL dorgqr( 0, -1, 0, a, 1, x, w, 1, info )
206  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
207  infot = 2
208  CALL dorgqr( 1, 2, 0, a, 1, x, w, 2, info )
209  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
210  infot = 3
211  CALL dorgqr( 0, 0, -1, a, 1, x, w, 1, info )
212  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
213  infot = 3
214  CALL dorgqr( 1, 1, 2, a, 1, x, w, 1, info )
215  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
216  infot = 5
217  CALL dorgqr( 2, 2, 0, a, 1, x, w, 2, info )
218  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
219  infot = 8
220  CALL dorgqr( 2, 2, 0, a, 2, x, w, 1, info )
221  CALL chkxer( 'DORGQR', infot, nout, lerr, ok )
222 *
223 * DORG2R
224 *
225  srnamt = 'DORG2R'
226  infot = 1
227  CALL dorg2r( -1, 0, 0, a, 1, x, w, info )
228  CALL chkxer( 'DORG2R', infot, nout, lerr, ok )
229  infot = 2
230  CALL dorg2r( 0, -1, 0, a, 1, x, w, info )
231  CALL chkxer( 'DORG2R', infot, nout, lerr, ok )
232  infot = 2
233  CALL dorg2r( 1, 2, 0, a, 1, x, w, info )
234  CALL chkxer( 'DORG2R', infot, nout, lerr, ok )
235  infot = 3
236  CALL dorg2r( 0, 0, -1, a, 1, x, w, info )
237  CALL chkxer( 'DORG2R', infot, nout, lerr, ok )
238  infot = 3
239  CALL dorg2r( 2, 1, 2, a, 2, x, w, info )
240  CALL chkxer( 'DORG2R', infot, nout, lerr, ok )
241  infot = 5
242  CALL dorg2r( 2, 1, 0, a, 1, x, w, info )
243  CALL chkxer( 'DORG2R', infot, nout, lerr, ok )
244 *
245 * DORMQR
246 *
247  srnamt = 'DORMQR'
248  infot = 1
249  CALL dormqr( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
250  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
251  infot = 2
252  CALL dormqr( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
253  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
254  infot = 3
255  CALL dormqr( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, 1, info )
256  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
257  infot = 4
258  CALL dormqr( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, 1, info )
259  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
260  infot = 5
261  CALL dormqr( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, 1, info )
262  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
263  infot = 5
264  CALL dormqr( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, 1, info )
265  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
266  infot = 5
267  CALL dormqr( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, 1, info )
268  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
269  infot = 7
270  CALL dormqr( 'L', 'N', 2, 1, 0, a, 1, x, af, 2, w, 1, info )
271  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
272  infot = 7
273  CALL dormqr( 'R', 'N', 1, 2, 0, a, 1, x, af, 1, w, 1, info )
274  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
275  infot = 10
276  CALL dormqr( 'L', 'N', 2, 1, 0, a, 2, x, af, 1, w, 1, info )
277  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
278  infot = 12
279  CALL dormqr( 'L', 'N', 1, 2, 0, a, 1, x, af, 1, w, 1, info )
280  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
281  infot = 12
282  CALL dormqr( 'R', 'N', 2, 1, 0, a, 1, x, af, 2, w, 1, info )
283  CALL chkxer( 'DORMQR', infot, nout, lerr, ok )
284 *
285 * DORM2R
286 *
287  srnamt = 'DORM2R'
288  infot = 1
289  CALL dorm2r( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, info )
290  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
291  infot = 2
292  CALL dorm2r( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, info )
293  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
294  infot = 3
295  CALL dorm2r( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, info )
296  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
297  infot = 4
298  CALL dorm2r( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, info )
299  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
300  infot = 5
301  CALL dorm2r( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, info )
302  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
303  infot = 5
304  CALL dorm2r( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, info )
305  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
306  infot = 5
307  CALL dorm2r( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, info )
308  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
309  infot = 7
310  CALL dorm2r( 'L', 'N', 2, 1, 0, a, 1, x, af, 2, w, info )
311  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
312  infot = 7
313  CALL dorm2r( 'R', 'N', 1, 2, 0, a, 1, x, af, 1, w, info )
314  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
315  infot = 10
316  CALL dorm2r( 'L', 'N', 2, 1, 0, a, 2, x, af, 1, w, info )
317  CALL chkxer( 'DORM2R', infot, nout, lerr, ok )
318 *
319 * Print a summary line.
320 *
321  CALL alaesm( path, ok, nout )
322 *
323  RETURN
324 *
325 * End of DERRQR
326 *
subroutine chkxer(SRNAMT, INFOT, NOUT, LERR, OK)
Definition: cblat2.f:3196
subroutine alaesm(PATH, OK, NOUT)
ALAESM
Definition: alaesm.f:63
subroutine dgeqrs(M, N, NRHS, A, LDA, TAU, B, LDB, WORK, LWORK, INFO)
DGEQRS
Definition: dgeqrs.f:121
subroutine dgeqrf(M, N, A, LDA, TAU, WORK, LWORK, INFO)
DGEQRF
Definition: dgeqrf.f:146
subroutine dgeqrfp(M, N, A, LDA, TAU, WORK, LWORK, INFO)
DGEQRFP
Definition: dgeqrfp.f:149
subroutine dgeqr2(M, N, A, LDA, TAU, WORK, INFO)
DGEQR2 computes the QR factorization of a general rectangular matrix using an unblocked algorithm.
Definition: dgeqr2.f:130
subroutine dgeqr2p(M, N, A, LDA, TAU, WORK, INFO)
DGEQR2P computes the QR factorization of a general rectangular matrix with non-negative diagonal elem...
Definition: dgeqr2p.f:134
subroutine dorg2r(M, N, K, A, LDA, TAU, WORK, INFO)
DORG2R generates all or part of the orthogonal matrix Q from a QR factorization determined by sgeqrf ...
Definition: dorg2r.f:114
subroutine dorgqr(M, N, K, A, LDA, TAU, WORK, LWORK, INFO)
DORGQR
Definition: dorgqr.f:128
subroutine dorm2r(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, INFO)
DORM2R multiplies a general matrix by the orthogonal matrix from a QR factorization determined by sge...
Definition: dorm2r.f:159
subroutine dormqr(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, LWORK, INFO)
DORMQR
Definition: dormqr.f:167
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