LAPACK 3.11.0 LAPACK: Linear Algebra PACKage
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zchksy_aa.f
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1*> \brief \b ZCHKSY_AA
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 ZCHKSY_AA( DOTYPE, NN, NVAL, NNB, NBVAL, NNS, NSVAL,
12* THRESH, TSTERR, NMAX, A, AFAC, AINV, B, X,
13* XACT, WORK, RWORK, IWORK, NOUT )
14*
15* .. Scalar Arguments ..
16* LOGICAL TSTERR
17* INTEGER NMAX, NN, NNB, NNS, NOUT
18* DOUBLE PRECISION THRESH
19* ..
20* .. Array Arguments ..
21* LOGICAL DOTYPE( * )
22* INTEGER IWORK( * ), NBVAL( * ), NSVAL( * ), NVAL( * )
23* DOUBLE PRECISION RWORK( * )
24* COMPLEX*16 A( * ), AFAC( * ), AINV( * ), B( * ),
25* \$ WORK( * ), X( * ), XACT( * )
26* ..
27*
28*
29*> \par Purpose:
30* =============
31*>
32*> \verbatim
33*>
34*> ZCHKSY_AA tests ZSYTRF_AA, -TRS_AA.
35*> \endverbatim
36*
37* Arguments:
38* ==========
39*
40*> \param[in] DOTYPE
41*> \verbatim
42*> DOTYPE is LOGICAL array, dimension (NTYPES)
43*> The matrix types to be used for testing. Matrices of type j
44*> (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) =
45*> .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.
46*> \endverbatim
47*>
48*> \param[in] NN
49*> \verbatim
50*> NN is INTEGER
51*> The number of values of N contained in the vector NVAL.
52*> \endverbatim
53*>
54*> \param[in] NVAL
55*> \verbatim
56*> NVAL is INTEGER array, dimension (NN)
57*> The values of the matrix dimension N.
58*> \endverbatim
59*>
60*> \param[in] NNB
61*> \verbatim
62*> NNB is INTEGER
63*> The number of values of NB contained in the vector NBVAL.
64*> \endverbatim
65*>
66*> \param[in] NBVAL
67*> \verbatim
68*> NBVAL is INTEGER array, dimension (NNB)
69*> The values of the blocksize NB.
70*> \endverbatim
71*>
72*> \param[in] NNS
73*> \verbatim
74*> NNS is INTEGER
75*> The number of values of NRHS contained in the vector NSVAL.
76*> \endverbatim
77*>
78*> \param[in] NSVAL
79*> \verbatim
80*> NSVAL is INTEGER array, dimension (NNS)
81*> The values of the number of right hand sides NRHS.
82*> \endverbatim
83*>
84*> \param[in] THRESH
85*> \verbatim
86*> THRESH is DOUBLE PRECISION
87*> The threshold value for the test ratios. A result is
88*> included in the output file if RESULT >= THRESH. To have
89*> every test ratio printed, use THRESH = 0.
90*> \endverbatim
91*>
92*> \param[in] TSTERR
93*> \verbatim
94*> TSTERR is LOGICAL
95*> Flag that indicates whether error exits are to be tested.
96*> \endverbatim
97*>
98*> \param[in] NMAX
99*> \verbatim
100*> NMAX is INTEGER
101*> The maximum value permitted for N, used in dimensioning the
102*> work arrays.
103*> \endverbatim
104*>
105*> \param[out] A
106*> \verbatim
107*> A is COMPLEX*16 array, dimension (NMAX*NMAX)
108*> \endverbatim
109*>
110*> \param[out] AFAC
111*> \verbatim
112*> AFAC is COMPLEX*16 array, dimension (NMAX*NMAX)
113*> \endverbatim
114*>
115*> \param[out] AINV
116*> \verbatim
117*> AINV is COMPLEX*16 array, dimension (NMAX*NMAX)
118*> \endverbatim
119*>
120*> \param[out] B
121*> \verbatim
122*> B is COMPLEX*16 array, dimension (NMAX*NSMAX)
123*> where NSMAX is the largest entry in NSVAL.
124*> \endverbatim
125*>
126*> \param[out] X
127*> \verbatim
128*> X is COMPLEX*16 array, dimension (NMAX*NSMAX)
129*> \endverbatim
130*>
131*> \param[out] XACT
132*> \verbatim
133*> XACT is COMPLEX*16 array, dimension (NMAX*NSMAX)
134*> \endverbatim
135*>
136*> \param[out] WORK
137*> \verbatim
138*> WORK is COMPLEX*16 array, dimension (NMAX*max(3,NSMAX))
139*> \endverbatim
140*>
141*> \param[out] RWORK
142*> \verbatim
143*> RWORK is COMPLEX*16 array, dimension (max(NMAX,2*NSMAX))
144*> \endverbatim
145*>
146*> \param[out] IWORK
147*> \verbatim
148*> IWORK is INTEGER array, dimension (2*NMAX)
149*> \endverbatim
150*>
151*> \param[in] NOUT
152*> \verbatim
153*> NOUT is INTEGER
154*> The unit number for output.
155*> \endverbatim
156*
157* Authors:
158* ========
159*
160*> \author Univ. of Tennessee
161*> \author Univ. of California Berkeley
162*> \author Univ. of Colorado Denver
163*> \author NAG Ltd.
164*
165*> \ingroup complex16_lin
166*
167* =====================================================================
168 SUBROUTINE zchksy_aa( DOTYPE, NN, NVAL, NNB, NBVAL, NNS, NSVAL,
169 \$ THRESH, TSTERR, NMAX, A, AFAC, AINV, B,
170 \$ X, XACT, WORK, RWORK, IWORK, NOUT )
171*
172* -- LAPACK test routine --
173* -- LAPACK is a software package provided by Univ. of Tennessee, --
174* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
175*
176 IMPLICIT NONE
177*
178* .. Scalar Arguments ..
179 LOGICAL TSTERR
180 INTEGER NN, NNB, NNS, NMAX, NOUT
181 DOUBLE PRECISION THRESH
182* ..
183* .. Array Arguments ..
184 LOGICAL DOTYPE( * )
185 INTEGER IWORK( * ), NBVAL( * ), NSVAL( * ), NVAL( * )
186 DOUBLE PRECISION RWORK( * )
187 COMPLEX*16 A( * ), AFAC( * ), AINV( * ), B( * ),
188 \$ work( * ), x( * ), xact( * )
189* ..
190*
191* =====================================================================
192*
193* .. Parameters ..
194 DOUBLE PRECISION ZERO
195 PARAMETER ( ZERO = 0.0d+0 )
196 COMPLEX*16 CZERO
197 parameter( czero = ( 0.0d+0, 0.0d+0 ) )
198 INTEGER NTYPES
199 parameter( ntypes = 10 )
200 INTEGER NTESTS
201 parameter( ntests = 9 )
202* ..
203* .. Local Scalars ..
204 LOGICAL ZEROT
205 CHARACTER DIST, TYPE, UPLO, XTYPE
206 CHARACTER*3 PATH, MATPATH
207 INTEGER I, I1, I2, IMAT, IN, INB, INFO, IOFF, IRHS,
208 \$ iuplo, izero, j, k, kl, ku, lda, lwork, mode,
209 \$ n, nb, nerrs, nfail, nimat, nrhs, nrun, nt
210 DOUBLE PRECISION ANORM, CNDNUM
211* ..
212* .. Local Arrays ..
213 CHARACTER UPLOS( 2 )
214 INTEGER ISEED( 4 ), ISEEDY( 4 )
215 DOUBLE PRECISION RESULT( NTESTS )
216* ..
217* .. External Subroutines ..
218 EXTERNAL alaerh, alahd, alasum, zerrsy, zlacpy, zlarhs,
221* ..
222* .. Intrinsic Functions ..
223 INTRINSIC max, min
224* ..
225* .. Scalars in Common ..
226 LOGICAL LERR, OK
227 CHARACTER*32 SRNAMT
228 INTEGER INFOT, NUNIT
229* ..
230* .. Common blocks ..
231 COMMON / infoc / infot, nunit, ok, lerr
232 COMMON / srnamc / srnamt
233* ..
234* .. Data statements ..
235 DATA iseedy / 1988, 1989, 1990, 1991 /
236 DATA uplos / 'U', 'L' /
237* ..
238* .. Executable Statements ..
239*
240* Initialize constants and the random number seed.
241*
242* Test path
243*
244 path( 1: 1 ) = 'Zomplex precision'
245 path( 2: 3 ) = 'SA'
246*
247* Path to generate matrices
248*
249 matpath( 1: 1 ) = 'Zomplex precision'
250 matpath( 2: 3 ) = 'SY'
251 nrun = 0
252 nfail = 0
253 nerrs = 0
254 DO 10 i = 1, 4
255 iseed( i ) = iseedy( i )
256 10 CONTINUE
257*
258* Test the error exits
259*
260 IF( tsterr )
261 \$ CALL zerrsy( path, nout )
262 infot = 0
263*
264* Set the minimum block size for which the block routine should
265* be used, which will be later returned by ILAENV
266*
267 CALL xlaenv( 2, 2 )
268*
269* Do for each value of N in NVAL
270*
271 DO 180 in = 1, nn
272 n = nval( in )
273 IF( n .GT. nmax ) THEN
274 nfail = nfail + 1
275 WRITE(nout, 9995) 'M ', n, nmax
276 GO TO 180
277 END IF
278 lda = max( n, 1 )
279 xtype = 'N'
280 nimat = ntypes
281 IF( n.LE.0 )
282 \$ nimat = 1
283*
284 izero = 0
285*
286* Do for each value of matrix type IMAT
287*
288 DO 170 imat = 1, nimat
289*
290* Do the tests only if DOTYPE( IMAT ) is true.
291*
292 IF( .NOT.dotype( imat ) )
293 \$ GO TO 170
294*
295* Skip types 3, 4, 5, or 6 if the matrix size is too small.
296*
297 zerot = imat.GE.3 .AND. imat.LE.6
298 IF( zerot .AND. n.LT.imat-2 )
299 \$ GO TO 170
300*
301* Do first for UPLO = 'U', then for UPLO = 'L'
302*
303 DO 160 iuplo = 1, 2
304 uplo = uplos( iuplo )
305*
306* Begin generate the test matrix A.
307*
308*
309* Set up parameters with ZLATB4 for the matrix generator
310* based on the type of matrix to be generated.
311*
312 CALL zlatb4( matpath, imat, n, n, TYPE, kl, ku,
313 \$ anorm, mode, cndnum, dist )
314*
315* Generate a matrix with ZLATMS.
316*
317 srnamt = 'ZLATMS'
318 CALL zlatms( n, n, dist, iseed, TYPE, rwork, mode,
319 \$ cndnum, anorm, kl, ku, uplo, a, lda, work,
320 \$ info )
321*
322* Check error code from ZLATMS and handle error.
323*
324 IF( info.NE.0 ) THEN
325 CALL alaerh( path, 'ZLATMS', info, 0, uplo, n, n, -1,
326 \$ -1, -1, imat, nfail, nerrs, nout )
327*
328* Skip all tests for this generated matrix
329*
330 GO TO 160
331 END IF
332*
333* For matrix types 3-6, zero one or more rows and
334* columns of the matrix to test that INFO is returned
335* correctly.
336*
337 IF( zerot ) THEN
338 IF( imat.EQ.3 ) THEN
339 izero = 1
340 ELSE IF( imat.EQ.4 ) THEN
341 izero = n
342 ELSE
343 izero = n / 2 + 1
344 END IF
345*
346 IF( imat.LT.6 ) THEN
347*
348* Set row and column IZERO to zero.
349*
350 IF( iuplo.EQ.1 ) THEN
351 ioff = ( izero-1 )*lda
352 DO 20 i = 1, izero - 1
353 a( ioff+i ) = czero
354 20 CONTINUE
355 ioff = ioff + izero
356 DO 30 i = izero, n
357 a( ioff ) = czero
358 ioff = ioff + lda
359 30 CONTINUE
360 ELSE
361 ioff = izero
362 DO 40 i = 1, izero - 1
363 a( ioff ) = czero
364 ioff = ioff + lda
365 40 CONTINUE
366 ioff = ioff - izero
367 DO 50 i = izero, n
368 a( ioff+i ) = czero
369 50 CONTINUE
370 END IF
371 ELSE
372 IF( iuplo.EQ.1 ) THEN
373*
374* Set the first IZERO rows and columns to zero.
375*
376 ioff = 0
377 DO 70 j = 1, n
378 i2 = min( j, izero )
379 DO 60 i = 1, i2
380 a( ioff+i ) = czero
381 60 CONTINUE
382 ioff = ioff + lda
383 70 CONTINUE
384 izero = 1
385 ELSE
386*
387* Set the last IZERO rows and columns to zero.
388*
389 ioff = 0
390 DO 90 j = 1, n
391 i1 = max( j, izero )
392 DO 80 i = i1, n
393 a( ioff+i ) = czero
394 80 CONTINUE
395 ioff = ioff + lda
396 90 CONTINUE
397 END IF
398 END IF
399 ELSE
400 izero = 0
401 END IF
402*
403* End generate the test matrix A.
404*
405* Do for each value of NB in NBVAL
406*
407 DO 150 inb = 1, nnb
408*
409* Set the optimal blocksize, which will be later
410* returned by ILAENV.
411*
412 nb = nbval( inb )
413 CALL xlaenv( 1, nb )
414*
415* Copy the test matrix A into matrix AFAC which
416* will be factorized in place. This is needed to
417* preserve the test matrix A for subsequent tests.
418*
419 CALL zlacpy( uplo, n, n, a, lda, afac, lda )
420*
421* Compute the L*D*L**T or U*D*U**T factorization of the
422* matrix. IWORK stores details of the interchanges and
423* the block structure of D. AINV is a work array for
424* block factorization, LWORK is the length of AINV.
425*
426 srnamt = 'ZSYTRF_AA'
427 lwork = max( 1, n*nb + n )
428 CALL zsytrf_aa( uplo, n, afac, lda, iwork, ainv,
429 \$ lwork, info )
430*
431* Adjust the expected value of INFO to account for
432* pivoting.
433*
434c IF( IZERO.GT.0 ) THEN
435c J = 1
436c K = IZERO
437c 100 CONTINUE
438c IF( J.EQ.K ) THEN
439c K = IWORK( J )
440c ELSE IF( IWORK( J ).EQ.K ) THEN
441c K = J
442c END IF
443c IF( J.LT.K ) THEN
444c J = J + 1
445c GO TO 100
446c END IF
447c ELSE
448 k = 0
449c END IF
450*
451* Check error code from ZSYTRF and handle error.
452*
453 IF( info.NE.k ) THEN
454 CALL alaerh( path, 'ZSYTRF_AA', info, k, uplo,
455 \$ n, n, -1, -1, nb, imat, nfail, nerrs,
456 \$ nout )
457 END IF
458*
459*+ TEST 1
460* Reconstruct matrix from factors and compute residual.
461*
462 CALL zsyt01_aa( uplo, n, a, lda, afac, lda, iwork,
463 \$ ainv, lda, rwork, result( 1 ) )
464 nt = 1
465*
466*
467* Print information about the tests that did not pass
468* the threshold.
469*
470 DO 110 k = 1, nt
471 IF( result( k ).GE.thresh ) THEN
472 IF( nfail.EQ.0 .AND. nerrs.EQ.0 )
473 \$ CALL alahd( nout, path )
474 WRITE( nout, fmt = 9999 )uplo, n, nb, imat, k,
475 \$ result( k )
476 nfail = nfail + 1
477 END IF
478 110 CONTINUE
479 nrun = nrun + nt
480*
481* Skip solver test if INFO is not 0.
482*
483 IF( info.NE.0 ) THEN
484 GO TO 140
485 END IF
486*
487* Do for each value of NRHS in NSVAL.
488*
489 DO 130 irhs = 1, nns
490 nrhs = nsval( irhs )
491*
492*+ TEST 2 (Using TRS)
493* Solve and compute residual for A * X = B.
494*
495* Choose a set of NRHS random solution vectors
496* stored in XACT and set up the right hand side B
497*
498 srnamt = 'ZLARHS'
499 CALL zlarhs( matpath, xtype, uplo, ' ', n, n,
500 \$ kl, ku, nrhs, a, lda, xact, lda,
501 \$ b, lda, iseed, info )
502 CALL zlacpy( 'Full', n, nrhs, b, lda, x, lda )
503*
504 srnamt = 'ZSYTRS_AA'
505 lwork = max( 1, 3*n-2 )
506 CALL zsytrs_aa( uplo, n, nrhs, afac, lda,
507 \$ iwork, x, lda, work, lwork,
508 \$ info )
509*
510* Check error code from ZSYTRS and handle error.
511*
512 IF( info.NE.0 ) THEN
513 IF( izero.EQ.0 ) THEN
514 CALL alaerh( path, 'ZSYTRS_AA', info, 0,
515 \$ uplo, n, n, -1, -1, nrhs, imat,
516 \$ nfail, nerrs, nout )
517 END IF
518 ELSE
519 CALL zlacpy( 'Full', n, nrhs, b, lda, work, lda
520 \$ )
521*
522* Compute the residual for the solution
523*
524 CALL zsyt02( uplo, n, nrhs, a, lda, x, lda,
525 \$ work, lda, rwork, result( 2 ) )
526*
527*
528* Print information about the tests that did not pass
529* the threshold.
530*
531 DO 120 k = 2, 2
532 IF( result( k ).GE.thresh ) THEN
533 IF( nfail.EQ.0 .AND. nerrs.EQ.0 )
534 \$ CALL alahd( nout, path )
535 WRITE( nout, fmt = 9998 )uplo, n, nrhs,
536 \$ imat, k, result( k )
537 nfail = nfail + 1
538 END IF
539 120 CONTINUE
540 END IF
541 nrun = nrun + 1
542*
543* End do for each value of NRHS in NSVAL.
544*
545 130 CONTINUE
546 140 CONTINUE
547 150 CONTINUE
548 160 CONTINUE
549 170 CONTINUE
550 180 CONTINUE
551*
552* Print a summary of the results.
553*
554 CALL alasum( path, nout, nfail, nrun, nerrs )
555*
556 9999 FORMAT( ' UPLO = ''', a1, ''', N =', i5, ', NB =', i4, ', type ',
557 \$ i2, ', test ', i2, ', ratio =', g12.5 )
558 9998 FORMAT( ' UPLO = ''', a1, ''', N =', i5, ', NRHS=', i3, ', type ',
559 \$ i2, ', test(', i2, ') =', g12.5 )
560 9995 FORMAT( ' Invalid input value: ', a4, '=', i6, '; must be <=',
561 \$ i6 )
562 RETURN
563*
564* End of ZCHKSY_AA
565*
566 END
subroutine alasum(TYPE, NOUT, NFAIL, NRUN, NERRS)
ALASUM
Definition: alasum.f:73
subroutine xlaenv(ISPEC, NVALUE)
XLAENV
Definition: xlaenv.f:81
subroutine alahd(IOUNIT, PATH)
ALAHD
Definition: alahd.f:107
subroutine alaerh(PATH, SUBNAM, INFO, INFOE, OPTS, M, N, KL, KU, N5, IMAT, NFAIL, NERRS, NOUT)
ALAERH
Definition: alaerh.f:147
subroutine zlarhs(PATH, XTYPE, UPLO, TRANS, M, N, KL, KU, NRHS, A, LDA, X, LDX, B, LDB, ISEED, INFO)
ZLARHS
Definition: zlarhs.f:208
subroutine zsyt02(UPLO, N, NRHS, A, LDA, X, LDX, B, LDB, RWORK, RESID)
ZSYT02
Definition: zsyt02.f:127
subroutine zsyt01_aa(UPLO, N, A, LDA, AFAC, LDAFAC, IPIV, C, LDC, RWORK, RESID)
ZSYT01
Definition: zsyt01_aa.f:124
subroutine zchksy_aa(DOTYPE, NN, NVAL, NNB, NBVAL, NNS, NSVAL, THRESH, TSTERR, NMAX, A, AFAC, AINV, B, X, XACT, WORK, RWORK, IWORK, NOUT)
ZCHKSY_AA
Definition: zchksy_aa.f:171
subroutine zlatb4(PATH, IMAT, M, N, TYPE, KL, KU, ANORM, MODE, CNDNUM, DIST)
ZLATB4
Definition: zlatb4.f:121
subroutine zerrsy(PATH, NUNIT)
ZERRSY
Definition: zerrsy.f:55
subroutine zlatms(M, N, DIST, ISEED, SYM, D, MODE, COND, DMAX, KL, KU, PACK, A, LDA, WORK, INFO)
ZLATMS
Definition: zlatms.f:332
subroutine zlacpy(UPLO, M, N, A, LDA, B, LDB)
ZLACPY copies all or part of one two-dimensional array to another.
Definition: zlacpy.f:103
subroutine zsytrs_aa(UPLO, N, NRHS, A, LDA, IPIV, B, LDB, WORK, LWORK, INFO)
ZSYTRS_AA
Definition: zsytrs_aa.f:131
subroutine zsytrf_aa(UPLO, N, A, LDA, IPIV, WORK, LWORK, INFO)
ZSYTRF_AA
Definition: zsytrf_aa.f:132