LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ derrlq()

subroutine derrlq ( character*3  PATH,
integer  NUNIT 
)

DERRLQ

Purpose:
 DERRLQ tests the error exits for the DOUBLE PRECISION routines
 that use the LQ 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 derrlq.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, dgelq2, dgelqf, dgelqs, dorgl2,
80  $ dorglq, dorml2, dormlq
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 LQ factorization
113 *
114 * DGELQF
115 *
116  srnamt = 'DGELQF'
117  infot = 1
118  CALL dgelqf( -1, 0, a, 1, b, w, 1, info )
119  CALL chkxer( 'DGELQF', infot, nout, lerr, ok )
120  infot = 2
121  CALL dgelqf( 0, -1, a, 1, b, w, 1, info )
122  CALL chkxer( 'DGELQF', infot, nout, lerr, ok )
123  infot = 4
124  CALL dgelqf( 2, 1, a, 1, b, w, 2, info )
125  CALL chkxer( 'DGELQF', infot, nout, lerr, ok )
126  infot = 7
127  CALL dgelqf( 2, 1, a, 2, b, w, 1, info )
128  CALL chkxer( 'DGELQF', infot, nout, lerr, ok )
129 *
130 * DGELQ2
131 *
132  srnamt = 'DGELQ2'
133  infot = 1
134  CALL dgelq2( -1, 0, a, 1, b, w, info )
135  CALL chkxer( 'DGELQ2', infot, nout, lerr, ok )
136  infot = 2
137  CALL dgelq2( 0, -1, a, 1, b, w, info )
138  CALL chkxer( 'DGELQ2', infot, nout, lerr, ok )
139  infot = 4
140  CALL dgelq2( 2, 1, a, 1, b, w, info )
141  CALL chkxer( 'DGELQ2', infot, nout, lerr, ok )
142 *
143 * DGELQS
144 *
145  srnamt = 'DGELQS'
146  infot = 1
147  CALL dgelqs( -1, 0, 0, a, 1, x, b, 1, w, 1, info )
148  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
149  infot = 2
150  CALL dgelqs( 0, -1, 0, a, 1, x, b, 1, w, 1, info )
151  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
152  infot = 2
153  CALL dgelqs( 2, 1, 0, a, 2, x, b, 1, w, 1, info )
154  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
155  infot = 3
156  CALL dgelqs( 0, 0, -1, a, 1, x, b, 1, w, 1, info )
157  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
158  infot = 5
159  CALL dgelqs( 2, 2, 0, a, 1, x, b, 2, w, 1, info )
160  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
161  infot = 8
162  CALL dgelqs( 1, 2, 0, a, 1, x, b, 1, w, 1, info )
163  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
164  infot = 10
165  CALL dgelqs( 1, 1, 2, a, 1, x, b, 1, w, 1, info )
166  CALL chkxer( 'DGELQS', infot, nout, lerr, ok )
167 *
168 * DORGLQ
169 *
170  srnamt = 'DORGLQ'
171  infot = 1
172  CALL dorglq( -1, 0, 0, a, 1, x, w, 1, info )
173  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
174  infot = 2
175  CALL dorglq( 0, -1, 0, a, 1, x, w, 1, info )
176  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
177  infot = 2
178  CALL dorglq( 2, 1, 0, a, 2, x, w, 2, info )
179  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
180  infot = 3
181  CALL dorglq( 0, 0, -1, a, 1, x, w, 1, info )
182  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
183  infot = 3
184  CALL dorglq( 1, 1, 2, a, 1, x, w, 1, info )
185  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
186  infot = 5
187  CALL dorglq( 2, 2, 0, a, 1, x, w, 2, info )
188  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
189  infot = 8
190  CALL dorglq( 2, 2, 0, a, 2, x, w, 1, info )
191  CALL chkxer( 'DORGLQ', infot, nout, lerr, ok )
192 *
193 * DORGL2
194 *
195  srnamt = 'DORGL2'
196  infot = 1
197  CALL dorgl2( -1, 0, 0, a, 1, x, w, info )
198  CALL chkxer( 'DORGL2', infot, nout, lerr, ok )
199  infot = 2
200  CALL dorgl2( 0, -1, 0, a, 1, x, w, info )
201  CALL chkxer( 'DORGL2', infot, nout, lerr, ok )
202  infot = 2
203  CALL dorgl2( 2, 1, 0, a, 2, x, w, info )
204  CALL chkxer( 'DORGL2', infot, nout, lerr, ok )
205  infot = 3
206  CALL dorgl2( 0, 0, -1, a, 1, x, w, info )
207  CALL chkxer( 'DORGL2', infot, nout, lerr, ok )
208  infot = 3
209  CALL dorgl2( 1, 1, 2, a, 1, x, w, info )
210  CALL chkxer( 'DORGL2', infot, nout, lerr, ok )
211  infot = 5
212  CALL dorgl2( 2, 2, 0, a, 1, x, w, info )
213  CALL chkxer( 'DORGL2', infot, nout, lerr, ok )
214 *
215 * DORMLQ
216 *
217  srnamt = 'DORMLQ'
218  infot = 1
219  CALL dormlq( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
220  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
221  infot = 2
222  CALL dormlq( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
223  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
224  infot = 3
225  CALL dormlq( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, 1, info )
226  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
227  infot = 4
228  CALL dormlq( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, 1, info )
229  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
230  infot = 5
231  CALL dormlq( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, 1, info )
232  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
233  infot = 5
234  CALL dormlq( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, 1, info )
235  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
236  infot = 5
237  CALL dormlq( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, 1, info )
238  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
239  infot = 7
240  CALL dormlq( 'L', 'N', 2, 0, 2, a, 1, x, af, 2, w, 1, info )
241  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
242  infot = 7
243  CALL dormlq( 'R', 'N', 0, 2, 2, a, 1, x, af, 1, w, 1, info )
244  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
245  infot = 10
246  CALL dormlq( 'L', 'N', 2, 1, 0, a, 2, x, af, 1, w, 1, info )
247  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
248  infot = 12
249  CALL dormlq( 'L', 'N', 1, 2, 0, a, 1, x, af, 1, w, 1, info )
250  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
251  infot = 12
252  CALL dormlq( 'R', 'N', 2, 1, 0, a, 1, x, af, 2, w, 1, info )
253  CALL chkxer( 'DORMLQ', infot, nout, lerr, ok )
254 *
255 * DORML2
256 *
257  srnamt = 'DORML2'
258  infot = 1
259  CALL dorml2( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, info )
260  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
261  infot = 2
262  CALL dorml2( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, info )
263  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
264  infot = 3
265  CALL dorml2( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, info )
266  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
267  infot = 4
268  CALL dorml2( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, info )
269  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
270  infot = 5
271  CALL dorml2( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, info )
272  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
273  infot = 5
274  CALL dorml2( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, info )
275  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
276  infot = 5
277  CALL dorml2( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, info )
278  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
279  infot = 7
280  CALL dorml2( 'L', 'N', 2, 1, 2, a, 1, x, af, 2, w, info )
281  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
282  infot = 7
283  CALL dorml2( 'R', 'N', 1, 2, 2, a, 1, x, af, 1, w, info )
284  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
285  infot = 10
286  CALL dorml2( 'L', 'N', 2, 1, 0, a, 2, x, af, 1, w, info )
287  CALL chkxer( 'DORML2', infot, nout, lerr, ok )
288 *
289 * Print a summary line.
290 *
291  CALL alaesm( path, ok, nout )
292 *
293  RETURN
294 *
295 * End of DERRLQ
296 *
subroutine chkxer(SRNAMT, INFOT, NOUT, LERR, OK)
Definition: cblat2.f:3196
subroutine alaesm(PATH, OK, NOUT)
ALAESM
Definition: alaesm.f:63
subroutine dgelqs(M, N, NRHS, A, LDA, TAU, B, LDB, WORK, LWORK, INFO)
DGELQS
Definition: dgelqs.f:121
subroutine dgelq2(M, N, A, LDA, TAU, WORK, INFO)
DGELQ2 computes the LQ factorization of a general rectangular matrix using an unblocked algorithm.
Definition: dgelq2.f:129
subroutine dgelqf(M, N, A, LDA, TAU, WORK, LWORK, INFO)
DGELQF
Definition: dgelqf.f:143
subroutine dorglq(M, N, K, A, LDA, TAU, WORK, LWORK, INFO)
DORGLQ
Definition: dorglq.f:127
subroutine dormlq(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, LWORK, INFO)
DORMLQ
Definition: dormlq.f:167
subroutine dorgl2(M, N, K, A, LDA, TAU, WORK, INFO)
DORGL2
Definition: dorgl2.f:113
subroutine dorml2(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, INFO)
DORML2 multiplies a general matrix by the orthogonal matrix from a LQ factorization determined by sge...
Definition: dorml2.f:159
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