LAPACK 3.12.1
LAPACK: Linear Algebra PACKage
Loading...
Searching...
No Matches
sckgqr.f
Go to the documentation of this file.
1*> \brief \b SCKGQR
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 SCKGQR( NM, MVAL, NP, PVAL, NN, NVAL, NMATS, ISEED,
12* THRESH, NMAX, A, AF, AQ, AR, TAUA, B, BF, BZ,
13* BT, BWK, TAUB, WORK, RWORK, NIN, NOUT, INFO )
14*
15* .. Scalar Arguments ..
16* INTEGER INFO, NIN, NM, NMATS, NMAX, NN, NOUT, NP
17* REAL THRESH
18* ..
19* .. Array Arguments ..
20* INTEGER ISEED( 4 ), MVAL( * ), NVAL( * ), PVAL( * )
21* REAL A( * ), AF( * ), AQ( * ), AR( * ), B( * ),
22* $ BF( * ), BT( * ), BWK( * ), BZ( * ),
23* $ RWORK( * ), TAUA( * ), TAUB( * ), WORK( * )
24* ..
25*
26*
27*> \par Purpose:
28* =============
29*>
30*> \verbatim
31*>
32*> SCKGQR tests
33*> SGGQRF: GQR factorization for N-by-M matrix A and N-by-P matrix B,
34*> SGGRQF: GRQ factorization for M-by-N matrix A and P-by-N matrix B.
35*> \endverbatim
36*
37* Arguments:
38* ==========
39*
40*> \param[in] NM
41*> \verbatim
42*> NM is INTEGER
43*> The number of values of M contained in the vector MVAL.
44*> \endverbatim
45*>
46*> \param[in] MVAL
47*> \verbatim
48*> MVAL is INTEGER array, dimension (NM)
49*> The values of the matrix row(column) dimension M.
50*> \endverbatim
51*>
52*> \param[in] NP
53*> \verbatim
54*> NP is INTEGER
55*> The number of values of P contained in the vector PVAL.
56*> \endverbatim
57*>
58*> \param[in] PVAL
59*> \verbatim
60*> PVAL is INTEGER array, dimension (NP)
61*> The values of the matrix row(column) dimension P.
62*> \endverbatim
63*>
64*> \param[in] NN
65*> \verbatim
66*> NN is INTEGER
67*> The number of values of N contained in the vector NVAL.
68*> \endverbatim
69*>
70*> \param[in] NVAL
71*> \verbatim
72*> NVAL is INTEGER array, dimension (NN)
73*> The values of the matrix column(row) dimension N.
74*> \endverbatim
75*>
76*> \param[in] NMATS
77*> \verbatim
78*> NMATS is INTEGER
79*> The number of matrix types to be tested for each combination
80*> of matrix dimensions. If NMATS >= NTYPES (the maximum
81*> number of matrix types), then all the different types are
82*> generated for testing. If NMATS < NTYPES, another input line
83*> is read to get the numbers of the matrix types to be used.
84*> \endverbatim
85*>
86*> \param[in,out] ISEED
87*> \verbatim
88*> ISEED is INTEGER array, dimension (4)
89*> On entry, the seed of the random number generator. The array
90*> elements should be between 0 and 4095, otherwise they will be
91*> reduced mod 4096, and ISEED(4) must be odd.
92*> On exit, the next seed in the random number sequence after
93*> all the test matrices have been generated.
94*> \endverbatim
95*>
96*> \param[in] THRESH
97*> \verbatim
98*> THRESH is REAL
99*> The threshold value for the test ratios. A result is
100*> included in the output file if RESULT >= THRESH. To have
101*> every test ratio printed, use THRESH = 0.
102*> \endverbatim
103*>
104*> \param[in] NMAX
105*> \verbatim
106*> NMAX is INTEGER
107*> The maximum value permitted for M or N, used in dimensioning
108*> the work arrays.
109*> \endverbatim
110*>
111*> \param[out] A
112*> \verbatim
113*> A is REAL array, dimension (NMAX*NMAX)
114*> \endverbatim
115*>
116*> \param[out] AF
117*> \verbatim
118*> AF is REAL array, dimension (NMAX*NMAX)
119*> \endverbatim
120*>
121*> \param[out] AQ
122*> \verbatim
123*> AQ is REAL array, dimension (NMAX*NMAX)
124*> \endverbatim
125*>
126*> \param[out] AR
127*> \verbatim
128*> AR is REAL array, dimension (NMAX*NMAX)
129*> \endverbatim
130*>
131*> \param[out] TAUA
132*> \verbatim
133*> TAUA is REAL array, dimension (NMAX)
134*> \endverbatim
135*>
136*> \param[out] B
137*> \verbatim
138*> B is REAL array, dimension (NMAX*NMAX)
139*> \endverbatim
140*>
141*> \param[out] BF
142*> \verbatim
143*> BF is REAL array, dimension (NMAX*NMAX)
144*> \endverbatim
145*>
146*> \param[out] BZ
147*> \verbatim
148*> BZ is REAL array, dimension (NMAX*NMAX)
149*> \endverbatim
150*>
151*> \param[out] BT
152*> \verbatim
153*> BT is REAL array, dimension (NMAX*NMAX)
154*> \endverbatim
155*>
156*> \param[out] BWK
157*> \verbatim
158*> BWK is REAL array, dimension (NMAX*NMAX)
159*> \endverbatim
160*>
161*> \param[out] TAUB
162*> \verbatim
163*> TAUB is REAL array, dimension (NMAX)
164*> \endverbatim
165*>
166*> \param[out] WORK
167*> \verbatim
168*> WORK is REAL array, dimension (NMAX*NMAX)
169*> \endverbatim
170*>
171*> \param[out] RWORK
172*> \verbatim
173*> RWORK is REAL array, dimension (NMAX)
174*> \endverbatim
175*>
176*> \param[in] NIN
177*> \verbatim
178*> NIN is INTEGER
179*> The unit number for input.
180*> \endverbatim
181*>
182*> \param[in] NOUT
183*> \verbatim
184*> NOUT is INTEGER
185*> The unit number for output.
186*> \endverbatim
187*>
188*> \param[out] INFO
189*> \verbatim
190*> INFO is INTEGER
191*> = 0 : successful exit
192*> > 0 : If SLATMS returns an error code, the absolute value
193*> of it is returned.
194*> \endverbatim
195*
196* Authors:
197* ========
198*
199*> \author Univ. of Tennessee
200*> \author Univ. of California Berkeley
201*> \author Univ. of Colorado Denver
202*> \author NAG Ltd.
203*
204*> \ingroup single_eig
205*
206* =====================================================================
207 SUBROUTINE sckgqr( NM, MVAL, NP, PVAL, NN, NVAL, NMATS, ISEED,
208 $ THRESH, NMAX, A, AF, AQ, AR, TAUA, B, BF, BZ,
209 $ BT, BWK, TAUB, WORK, RWORK, NIN, NOUT, INFO )
210*
211* -- LAPACK test routine --
212* -- LAPACK is a software package provided by Univ. of Tennessee, --
213* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
214*
215* .. Scalar Arguments ..
216 INTEGER INFO, NIN, NM, NMATS, NMAX, NN, NOUT, NP
217 REAL THRESH
218* ..
219* .. Array Arguments ..
220 INTEGER ISEED( 4 ), MVAL( * ), NVAL( * ), PVAL( * )
221 REAL A( * ), AF( * ), AQ( * ), AR( * ), B( * ),
222 $ bf( * ), bt( * ), bwk( * ), bz( * ),
223 $ rwork( * ), taua( * ), taub( * ), work( * )
224* ..
225*
226* =====================================================================
227*
228* .. Parameters ..
229 INTEGER NTESTS
230 PARAMETER ( NTESTS = 7 )
231 INTEGER NTYPES
232 parameter( ntypes = 8 )
233* ..
234* .. Local Scalars ..
235 LOGICAL FIRSTT
236 CHARACTER DISTA, DISTB, TYPE
237 CHARACTER*3 PATH
238 INTEGER I, IINFO, IM, IMAT, IN, IP, KLA, KLB, KUA, KUB,
239 $ lda, ldb, lwork, m, modea, modeb, n, nfail,
240 $ nrun, nt, p
241 REAL ANORM, BNORM, CNDNMA, CNDNMB
242* ..
243* .. Local Arrays ..
244 LOGICAL DOTYPE( NTYPES )
245 REAL RESULT( NTESTS )
246* ..
247* .. External Subroutines ..
248 EXTERNAL alahdg, alareq, alasum, sgqrts, sgrqts, slatb9,
249 $ slatms
250* ..
251* .. Intrinsic Functions ..
252 INTRINSIC abs
253* ..
254* .. Executable Statements ..
255*
256* Initialize constants.
257*
258 path( 1: 3 ) = 'GQR'
259 info = 0
260 nrun = 0
261 nfail = 0
262 firstt = .true.
263 CALL alareq( path, nmats, dotype, ntypes, nin, nout )
264 lda = nmax
265 ldb = nmax
266 lwork = nmax*nmax
267*
268* Do for each value of M in MVAL.
269*
270 DO 60 im = 1, nm
271 m = mval( im )
272*
273* Do for each value of P in PVAL.
274*
275 DO 50 ip = 1, np
276 p = pval( ip )
277*
278* Do for each value of N in NVAL.
279*
280 DO 40 in = 1, nn
281 n = nval( in )
282*
283 DO 30 imat = 1, ntypes
284*
285* Do the tests only if DOTYPE( IMAT ) is true.
286*
287 IF( .NOT.dotype( imat ) )
288 $ GO TO 30
289*
290* Test SGGRQF
291*
292* Set up parameters with SLATB9 and generate test
293* matrices A and B with SLATMS.
294*
295 CALL slatb9( 'GRQ', imat, m, p, n, TYPE, kla, kua,
296 $ klb, kub, anorm, bnorm, modea, modeb,
297 $ cndnma, cndnmb, dista, distb )
298*
299* Generate M by N matrix A
300*
301 CALL slatms( m, n, dista, iseed, TYPE, rwork, modea,
302 $ cndnma, anorm, kla, kua, 'No packing', a,
303 $ lda, work, iinfo )
304 IF( iinfo.NE.0 ) THEN
305 WRITE( nout, fmt = 9999 )iinfo
306 info = abs( iinfo )
307 GO TO 30
308 END IF
309*
310* Generate P by N matrix B
311*
312 CALL slatms( p, n, distb, iseed, TYPE, rwork, modeb,
313 $ cndnmb, bnorm, klb, kub, 'No packing', b,
314 $ ldb, work, iinfo )
315 IF( iinfo.NE.0 ) THEN
316 WRITE( nout, fmt = 9999 )iinfo
317 info = abs( iinfo )
318 GO TO 30
319 END IF
320*
321 nt = 4
322*
323 CALL sgrqts( m, p, n, a, af, aq, ar, lda, taua, b, bf,
324 $ bz, bt, bwk, ldb, taub, work, lwork,
325 $ rwork, result )
326*
327* Print information about the tests that did not
328* pass the threshold.
329*
330 DO 10 i = 1, nt
331 IF( result( i ).GE.thresh ) THEN
332 IF( nfail.EQ.0 .AND. firstt ) THEN
333 firstt = .false.
334 CALL alahdg( nout, 'GRQ' )
335 END IF
336 WRITE( nout, fmt = 9998 )m, p, n, imat, i,
337 $ result( i )
338 nfail = nfail + 1
339 END IF
340 10 CONTINUE
341 nrun = nrun + nt
342*
343* Test SGGQRF
344*
345* Set up parameters with SLATB9 and generate test
346* matrices A and B with SLATMS.
347*
348 CALL slatb9( 'GQR', imat, m, p, n, TYPE, kla, kua,
349 $ klb, kub, anorm, bnorm, modea, modeb,
350 $ cndnma, cndnmb, dista, distb )
351*
352* Generate N-by-M matrix A
353*
354 CALL slatms( n, m, dista, iseed, TYPE, rwork, modea,
355 $ cndnma, anorm, kla, kua, 'No packing', a,
356 $ lda, work, iinfo )
357 IF( iinfo.NE.0 ) THEN
358 WRITE( nout, fmt = 9999 )iinfo
359 info = abs( iinfo )
360 GO TO 30
361 END IF
362*
363* Generate N-by-P matrix B
364*
365 CALL slatms( n, p, distb, iseed, TYPE, rwork, modea,
366 $ cndnma, bnorm, klb, kub, 'No packing', b,
367 $ ldb, work, iinfo )
368 IF( iinfo.NE.0 ) THEN
369 WRITE( nout, fmt = 9999 )iinfo
370 info = abs( iinfo )
371 GO TO 30
372 END IF
373*
374 nt = 4
375*
376 CALL sgqrts( n, m, p, a, af, aq, ar, lda, taua, b, bf,
377 $ bz, bt, bwk, ldb, taub, work, lwork,
378 $ rwork, result )
379*
380* Print information about the tests that did not
381* pass the threshold.
382*
383 DO 20 i = 1, nt
384 IF( result( i ).GE.thresh ) THEN
385 IF( nfail.EQ.0 .AND. firstt ) THEN
386 firstt = .false.
387 CALL alahdg( nout, path )
388 END IF
389 WRITE( nout, fmt = 9997 )n, m, p, imat, i,
390 $ result( i )
391 nfail = nfail + 1
392 END IF
393 20 CONTINUE
394 nrun = nrun + nt
395*
396 30 CONTINUE
397 40 CONTINUE
398 50 CONTINUE
399 60 CONTINUE
400*
401* Print a summary of the results.
402*
403 CALL alasum( path, nout, nfail, nrun, 0 )
404*
405 9999 FORMAT( ' SLATMS in SCKGQR: INFO = ', i5 )
406 9998 FORMAT( ' M=', i4, ' P=', i4, ', N=', i4, ', type ', i2,
407 $ ', test ', i2, ', ratio=', g13.6 )
408 9997 FORMAT( ' N=', i4, ' M=', i4, ', P=', i4, ', type ', i2,
409 $ ', test ', i2, ', ratio=', g13.6 )
410 RETURN
411*
412* End of SCKGQR
413*
414 END
alareq
subroutine alareq(path, nmats, dotype, ntypes, nin, nout)
ALAREQ
Definition alareq.f:90
alasum
subroutine alasum(type, nout, nfail, nrun, nerrs)
ALASUM
Definition alasum.f:73
alahdg
subroutine alahdg(iounit, path)
ALAHDG
Definition alahdg.f:62
sckgqr
subroutine sckgqr(nm, mval, np, pval, nn, nval, nmats, iseed, thresh, nmax, a, af, aq, ar, taua, b, bf, bz, bt, bwk, taub, work, rwork, nin, nout, info)
SCKGQR
Definition sckgqr.f:210
sgqrts
subroutine sgqrts(n, m, p, a, af, q, r, lda, taua, b, bf, z, t, bwk, ldb, taub, work, lwork, rwork, result)
SGQRTS
Definition sgqrts.f:176
sgrqts
subroutine sgrqts(m, p, n, a, af, q, r, lda, taua, b, bf, z, t, bwk, ldb, taub, work, lwork, rwork, result)
SGRQTS
Definition sgrqts.f:177
slatb9
subroutine slatb9(path, imat, m, p, n, type, kla, kua, klb, kub, anorm, bnorm, modea, modeb, cndnma, cndnmb, dista, distb)
SLATB9
Definition slatb9.f:170
slatms
subroutine slatms(m, n, dist, iseed, sym, d, mode, cond, dmax, kl, ku, pack, a, lda, work, info)
SLATMS
Definition slatms.f:321