LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ serrlq()

subroutine serrlq ( character*3  PATH,
integer  NUNIT 
)

SERRLQ

Purpose:
 SERRLQ tests the error exits for the REAL 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 serrlq.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  REAL A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
76  $ W( NMAX ), X( NMAX )
77 * ..
78 * .. External Subroutines ..
79  EXTERNAL alaesm, chkxer, sgelq2, sgelqf, sgelqs, sorgl2,
80  $ sorglq, sorml2, sormlq
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 real
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. / real( i+j )
104  af( i, j ) = 1. / real( i+j )
105  10 CONTINUE
106  b( j ) = 0.
107  w( j ) = 0.
108  x( j ) = 0.
109  20 CONTINUE
110  ok = .true.
111 *
112 * Error exits for LQ factorization
113 *
114 * SGELQF
115 *
116  srnamt = 'SGELQF'
117  infot = 1
118  CALL sgelqf( -1, 0, a, 1, b, w, 1, info )
119  CALL chkxer( 'SGELQF', infot, nout, lerr, ok )
120  infot = 2
121  CALL sgelqf( 0, -1, a, 1, b, w, 1, info )
122  CALL chkxer( 'SGELQF', infot, nout, lerr, ok )
123  infot = 4
124  CALL sgelqf( 2, 1, a, 1, b, w, 2, info )
125  CALL chkxer( 'SGELQF', infot, nout, lerr, ok )
126  infot = 7
127  CALL sgelqf( 2, 1, a, 2, b, w, 1, info )
128  CALL chkxer( 'SGELQF', infot, nout, lerr, ok )
129 *
130 * SGELQ2
131 *
132  srnamt = 'SGELQ2'
133  infot = 1
134  CALL sgelq2( -1, 0, a, 1, b, w, info )
135  CALL chkxer( 'SGELQ2', infot, nout, lerr, ok )
136  infot = 2
137  CALL sgelq2( 0, -1, a, 1, b, w, info )
138  CALL chkxer( 'SGELQ2', infot, nout, lerr, ok )
139  infot = 4
140  CALL sgelq2( 2, 1, a, 1, b, w, info )
141  CALL chkxer( 'SGELQ2', infot, nout, lerr, ok )
142 *
143 * SGELQS
144 *
145  srnamt = 'SGELQS'
146  infot = 1
147  CALL sgelqs( -1, 0, 0, a, 1, x, b, 1, w, 1, info )
148  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
149  infot = 2
150  CALL sgelqs( 0, -1, 0, a, 1, x, b, 1, w, 1, info )
151  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
152  infot = 2
153  CALL sgelqs( 2, 1, 0, a, 2, x, b, 1, w, 1, info )
154  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
155  infot = 3
156  CALL sgelqs( 0, 0, -1, a, 1, x, b, 1, w, 1, info )
157  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
158  infot = 5
159  CALL sgelqs( 2, 2, 0, a, 1, x, b, 2, w, 1, info )
160  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
161  infot = 8
162  CALL sgelqs( 1, 2, 0, a, 1, x, b, 1, w, 1, info )
163  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
164  infot = 10
165  CALL sgelqs( 1, 1, 2, a, 1, x, b, 1, w, 1, info )
166  CALL chkxer( 'SGELQS', infot, nout, lerr, ok )
167 *
168 * SORGLQ
169 *
170  srnamt = 'SORGLQ'
171  infot = 1
172  CALL sorglq( -1, 0, 0, a, 1, x, w, 1, info )
173  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
174  infot = 2
175  CALL sorglq( 0, -1, 0, a, 1, x, w, 1, info )
176  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
177  infot = 2
178  CALL sorglq( 2, 1, 0, a, 2, x, w, 2, info )
179  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
180  infot = 3
181  CALL sorglq( 0, 0, -1, a, 1, x, w, 1, info )
182  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
183  infot = 3
184  CALL sorglq( 1, 1, 2, a, 1, x, w, 1, info )
185  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
186  infot = 5
187  CALL sorglq( 2, 2, 0, a, 1, x, w, 2, info )
188  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
189  infot = 8
190  CALL sorglq( 2, 2, 0, a, 2, x, w, 1, info )
191  CALL chkxer( 'SORGLQ', infot, nout, lerr, ok )
192 *
193 * SORGL2
194 *
195  srnamt = 'SORGL2'
196  infot = 1
197  CALL sorgl2( -1, 0, 0, a, 1, x, w, info )
198  CALL chkxer( 'SORGL2', infot, nout, lerr, ok )
199  infot = 2
200  CALL sorgl2( 0, -1, 0, a, 1, x, w, info )
201  CALL chkxer( 'SORGL2', infot, nout, lerr, ok )
202  infot = 2
203  CALL sorgl2( 2, 1, 0, a, 2, x, w, info )
204  CALL chkxer( 'SORGL2', infot, nout, lerr, ok )
205  infot = 3
206  CALL sorgl2( 0, 0, -1, a, 1, x, w, info )
207  CALL chkxer( 'SORGL2', infot, nout, lerr, ok )
208  infot = 3
209  CALL sorgl2( 1, 1, 2, a, 1, x, w, info )
210  CALL chkxer( 'SORGL2', infot, nout, lerr, ok )
211  infot = 5
212  CALL sorgl2( 2, 2, 0, a, 1, x, w, info )
213  CALL chkxer( 'SORGL2', infot, nout, lerr, ok )
214 *
215 * SORMLQ
216 *
217  srnamt = 'SORMLQ'
218  infot = 1
219  CALL sormlq( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
220  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
221  infot = 2
222  CALL sormlq( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, 1, info )
223  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
224  infot = 3
225  CALL sormlq( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, 1, info )
226  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
227  infot = 4
228  CALL sormlq( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, 1, info )
229  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
230  infot = 5
231  CALL sormlq( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, 1, info )
232  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
233  infot = 5
234  CALL sormlq( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, 1, info )
235  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
236  infot = 5
237  CALL sormlq( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, 1, info )
238  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
239  infot = 7
240  CALL sormlq( 'L', 'N', 2, 0, 2, a, 1, x, af, 2, w, 1, info )
241  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
242  infot = 7
243  CALL sormlq( 'R', 'N', 0, 2, 2, a, 1, x, af, 1, w, 1, info )
244  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
245  infot = 10
246  CALL sormlq( 'L', 'N', 2, 1, 0, a, 2, x, af, 1, w, 1, info )
247  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
248  infot = 12
249  CALL sormlq( 'L', 'N', 1, 2, 0, a, 1, x, af, 1, w, 1, info )
250  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
251  infot = 12
252  CALL sormlq( 'R', 'N', 2, 1, 0, a, 1, x, af, 2, w, 1, info )
253  CALL chkxer( 'SORMLQ', infot, nout, lerr, ok )
254 *
255 * SORML2
256 *
257  srnamt = 'SORML2'
258  infot = 1
259  CALL sorml2( '/', 'N', 0, 0, 0, a, 1, x, af, 1, w, info )
260  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
261  infot = 2
262  CALL sorml2( 'L', '/', 0, 0, 0, a, 1, x, af, 1, w, info )
263  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
264  infot = 3
265  CALL sorml2( 'L', 'N', -1, 0, 0, a, 1, x, af, 1, w, info )
266  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
267  infot = 4
268  CALL sorml2( 'L', 'N', 0, -1, 0, a, 1, x, af, 1, w, info )
269  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
270  infot = 5
271  CALL sorml2( 'L', 'N', 0, 0, -1, a, 1, x, af, 1, w, info )
272  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
273  infot = 5
274  CALL sorml2( 'L', 'N', 0, 1, 1, a, 1, x, af, 1, w, info )
275  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
276  infot = 5
277  CALL sorml2( 'R', 'N', 1, 0, 1, a, 1, x, af, 1, w, info )
278  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
279  infot = 7
280  CALL sorml2( 'L', 'N', 2, 1, 2, a, 1, x, af, 2, w, info )
281  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
282  infot = 7
283  CALL sorml2( 'R', 'N', 1, 2, 2, a, 1, x, af, 1, w, info )
284  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
285  infot = 10
286  CALL sorml2( 'L', 'N', 2, 1, 0, a, 2, x, af, 1, w, info )
287  CALL chkxer( 'SORML2', infot, nout, lerr, ok )
288 *
289 * Print a summary line.
290 *
291  CALL alaesm( path, ok, nout )
292 *
293  RETURN
294 *
295 * End of SERRLQ
296 *
subroutine chkxer(SRNAMT, INFOT, NOUT, LERR, OK)
Definition: cblat2.f:3196
subroutine alaesm(PATH, OK, NOUT)
ALAESM
Definition: alaesm.f:63
subroutine sgelq2(M, N, A, LDA, TAU, WORK, INFO)
SGELQ2 computes the LQ factorization of a general rectangular matrix using an unblocked algorithm.
Definition: sgelq2.f:129
subroutine sgelqf(M, N, A, LDA, TAU, WORK, LWORK, INFO)
SGELQF
Definition: sgelqf.f:143
subroutine sorgl2(M, N, K, A, LDA, TAU, WORK, INFO)
SORGL2
Definition: sorgl2.f:113
subroutine sorml2(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, INFO)
SORML2 multiplies a general matrix by the orthogonal matrix from a LQ factorization determined by sge...
Definition: sorml2.f:159
subroutine sorglq(M, N, K, A, LDA, TAU, WORK, LWORK, INFO)
SORGLQ
Definition: sorglq.f:127
subroutine sormlq(SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, WORK, LWORK, INFO)
SORMLQ
Definition: sormlq.f:168
subroutine sgelqs(M, N, NRHS, A, LDA, TAU, B, LDB, WORK, LWORK, INFO)
SGELQS
Definition: sgelqs.f:121
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