LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
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◆ zchksy_aa()

subroutine zchksy_aa ( logical, dimension( * )  dotype,
integer  nn,
integer, dimension( * )  nval,
integer  nnb,
integer, dimension( * )  nbval,
integer  nns,
integer, dimension( * )  nsval,
double precision  thresh,
logical  tsterr,
integer  nmax,
complex*16, dimension( * )  a,
complex*16, dimension( * )  afac,
complex*16, dimension( * )  ainv,
complex*16, dimension( * )  b,
complex*16, dimension( * )  x,
complex*16, dimension( * )  xact,
complex*16, dimension( * )  work,
double precision, dimension( * )  rwork,
integer, dimension( * )  iwork,
integer  nout 
)

ZCHKSY_AA

Purpose:
 ZCHKSY_AA tests ZSYTRF_AA, -TRS_AA.
Parameters
[in]DOTYPE
          DOTYPE is LOGICAL array, dimension (NTYPES)
          The matrix types to be used for testing.  Matrices of type j
          (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) =
          .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.
[in]NN
          NN is INTEGER
          The number of values of N contained in the vector NVAL.
[in]NVAL
          NVAL is INTEGER array, dimension (NN)
          The values of the matrix dimension N.
[in]NNB
          NNB is INTEGER
          The number of values of NB contained in the vector NBVAL.
[in]NBVAL
          NBVAL is INTEGER array, dimension (NNB)
          The values of the blocksize NB.
[in]NNS
          NNS is INTEGER
          The number of values of NRHS contained in the vector NSVAL.
[in]NSVAL
          NSVAL is INTEGER array, dimension (NNS)
          The values of the number of right hand sides NRHS.
[in]THRESH
          THRESH is DOUBLE PRECISION
          The threshold value for the test ratios.  A result is
          included in the output file if RESULT >= THRESH.  To have
          every test ratio printed, use THRESH = 0.
[in]TSTERR
          TSTERR is LOGICAL
          Flag that indicates whether error exits are to be tested.
[in]NMAX
          NMAX is INTEGER
          The maximum value permitted for N, used in dimensioning the
          work arrays.
[out]A
          A is COMPLEX*16 array, dimension (NMAX*NMAX)
[out]AFAC
          AFAC is COMPLEX*16 array, dimension (NMAX*NMAX)
[out]AINV
          AINV is COMPLEX*16 array, dimension (NMAX*NMAX)
[out]B
          B is COMPLEX*16 array, dimension (NMAX*NSMAX)
          where NSMAX is the largest entry in NSVAL.
[out]X
          X is COMPLEX*16 array, dimension (NMAX*NSMAX)
[out]XACT
          XACT is COMPLEX*16 array, dimension (NMAX*NSMAX)
[out]WORK
          WORK is COMPLEX*16 array, dimension (NMAX*max(3,NSMAX))
[out]RWORK
          RWORK is COMPLEX*16 array, dimension (max(NMAX,2*NSMAX))
[out]IWORK
          IWORK is INTEGER array, dimension (2*NMAX)
[in]NOUT
          NOUT is INTEGER
          The unit number for output.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.

Definition at line 168 of file zchksy_aa.f.

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,
219 $ zlatb4, zlatms, zsyt02, zsyt01_aa, zsytrf_aa,
220 $ zsytrs_aa, xlaenv
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*
alasum
subroutine alasum(type, nout, nfail, nrun, nerrs)
ALASUM
Definition alasum.f:73
xlaenv
subroutine xlaenv(ispec, nvalue)
XLAENV
Definition xlaenv.f:81
zlarhs
subroutine zlarhs(path, xtype, uplo, trans, m, n, kl, ku, nrhs, a, lda, x, ldx, b, ldb, iseed, info)
ZLARHS
Definition zlarhs.f:208
alaerh
subroutine alaerh(path, subnam, info, infoe, opts, m, n, kl, ku, n5, imat, nfail, nerrs, nout)
ALAERH
Definition alaerh.f:147
alahd
subroutine alahd(iounit, path)
ALAHD
Definition alahd.f:107
zsytrf_aa
subroutine zsytrf_aa(uplo, n, a, lda, ipiv, work, lwork, info)
ZSYTRF_AA
Definition zsytrf_aa.f:132
zsytrs_aa
subroutine zsytrs_aa(uplo, n, nrhs, a, lda, ipiv, b, ldb, work, lwork, info)
ZSYTRS_AA
Definition zsytrs_aa.f:131
zlacpy
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
zerrsy
subroutine zerrsy(path, nunit)
ZERRSY
Definition zerrsy.f:55
zlatb4
subroutine zlatb4(path, imat, m, n, type, kl, ku, anorm, mode, cndnum, dist)
ZLATB4
Definition zlatb4.f:121
zlatms
subroutine zlatms(m, n, dist, iseed, sym, d, mode, cond, dmax, kl, ku, pack, a, lda, work, info)
ZLATMS
Definition zlatms.f:332
zsyt01_aa
subroutine zsyt01_aa(uplo, n, a, lda, afac, ldafac, ipiv, c, ldc, rwork, resid)
ZSYT01
Definition zsyt01_aa.f:124
zsyt02
subroutine zsyt02(uplo, n, nrhs, a, lda, x, ldx, b, ldb, rwork, resid)
ZSYT02
Definition zsyt02.f:127
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