LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
 All Classes Files Functions Variables Typedefs Macros
dblat2.f
Go to the documentation of this file.
1 *> \brief \b DBLAT2
2 *
3 * =========== DOCUMENTATION ===========
4 *
5 * Online html documentation available at
6 * http://www.netlib.org/lapack/explore-html/
7 *
8 * Definition:
9 * ===========
10 *
11 * PROGRAM DBLAT2
12 *
13 *
14 *> \par Purpose:
15 * =============
16 *>
17 *> \verbatim
18 *>
19 *> Test program for the DOUBLE PRECISION Level 2 Blas.
20 *>
21 *> The program must be driven by a short data file. The first 18 records
22 *> of the file are read using list-directed input, the last 16 records
23 *> are read using the format ( A6, L2 ). An annotated example of a data
24 *> file can be obtained by deleting the first 3 characters from the
25 *> following 34 lines:
26 *> 'dblat2.out' NAME OF SUMMARY OUTPUT FILE
27 *> 6 UNIT NUMBER OF SUMMARY FILE
28 *> 'DBLAT2.SNAP' NAME OF SNAPSHOT OUTPUT FILE
29 *> -1 UNIT NUMBER OF SNAPSHOT FILE (NOT USED IF .LT. 0)
30 *> F LOGICAL FLAG, T TO REWIND SNAPSHOT FILE AFTER EACH RECORD.
31 *> F LOGICAL FLAG, T TO STOP ON FAILURES.
32 *> T LOGICAL FLAG, T TO TEST ERROR EXITS.
33 *> 16.0 THRESHOLD VALUE OF TEST RATIO
34 *> 6 NUMBER OF VALUES OF N
35 *> 0 1 2 3 5 9 VALUES OF N
36 *> 4 NUMBER OF VALUES OF K
37 *> 0 1 2 4 VALUES OF K
38 *> 4 NUMBER OF VALUES OF INCX AND INCY
39 *> 1 2 -1 -2 VALUES OF INCX AND INCY
40 *> 3 NUMBER OF VALUES OF ALPHA
41 *> 0.0 1.0 0.7 VALUES OF ALPHA
42 *> 3 NUMBER OF VALUES OF BETA
43 *> 0.0 1.0 0.9 VALUES OF BETAC
44 *> DGEMV T PUT F FOR NO TEST. SAME COLUMNS.
45 *> DGBMV T PUT F FOR NO TEST. SAME COLUMNS.
46 *> DSYMV T PUT F FOR NO TEST. SAME COLUMNS.
47 *> DSBMV T PUT F FOR NO TEST. SAME COLUMNS.
48 *> DSPMV T PUT F FOR NO TEST. SAME COLUMNS.
49 *> DTRMV T PUT F FOR NO TEST. SAME COLUMNS.
50 *> DTBMV T PUT F FOR NO TEST. SAME COLUMNS.
51 *> DTPMV T PUT F FOR NO TEST. SAME COLUMNS.
52 *> DTRSV T PUT F FOR NO TEST. SAME COLUMNS.
53 *> DTBSV T PUT F FOR NO TEST. SAME COLUMNS.
54 *> DTPSV T PUT F FOR NO TEST. SAME COLUMNS.
55 *> DGER T PUT F FOR NO TEST. SAME COLUMNS.
56 *> DSYR T PUT F FOR NO TEST. SAME COLUMNS.
57 *> DSPR T PUT F FOR NO TEST. SAME COLUMNS.
58 *> DSYR2 T PUT F FOR NO TEST. SAME COLUMNS.
59 *> DSPR2 T PUT F FOR NO TEST. SAME COLUMNS.
60 *>
61 *> Further Details
62 *> ===============
63 *>
64 *> See:
65 *>
66 *> Dongarra J. J., Du Croz J. J., Hammarling S. and Hanson R. J..
67 *> An extended set of Fortran Basic Linear Algebra Subprograms.
68 *>
69 *> Technical Memoranda Nos. 41 (revision 3) and 81, Mathematics
70 *> and Computer Science Division, Argonne National Laboratory,
71 *> 9700 South Cass Avenue, Argonne, Illinois 60439, US.
72 *>
73 *> Or
74 *>
75 *> NAG Technical Reports TR3/87 and TR4/87, Numerical Algorithms
76 *> Group Ltd., NAG Central Office, 256 Banbury Road, Oxford
77 *> OX2 7DE, UK, and Numerical Algorithms Group Inc., 1101 31st
78 *> Street, Suite 100, Downers Grove, Illinois 60515-1263, USA.
79 *>
80 *>
81 *> -- Written on 10-August-1987.
82 *> Richard Hanson, Sandia National Labs.
83 *> Jeremy Du Croz, NAG Central Office.
84 *>
85 *> 10-9-00: Change STATUS='NEW' to 'UNKNOWN' so that the testers
86 *> can be run multiple times without deleting generated
87 *> output files (susan)
88 *> \endverbatim
89 *
90 * Authors:
91 * ========
92 *
93 *> \author Univ. of Tennessee
94 *> \author Univ. of California Berkeley
95 *> \author Univ. of Colorado Denver
96 *> \author NAG Ltd.
97 *
98 *> \date April 2012
99 *
100 *> \ingroup double_blas_testing
101 *
102 * =====================================================================
103  PROGRAM dblat2
104 *
105 * -- Reference BLAS test routine (version 3.4.1) --
106 * -- Reference BLAS is a software package provided by Univ. of Tennessee, --
107 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
108 * April 2012
109 *
110 * =====================================================================
111 *
112 * .. Parameters ..
113  INTEGER nin
114  parameter( nin = 5 )
115  INTEGER nsubs
116  parameter( nsubs = 16 )
117  DOUBLE PRECISION zero, one
118  parameter( zero = 0.0d0, one = 1.0d0 )
119  INTEGER nmax, incmax
120  parameter( nmax = 65, incmax = 2 )
121  INTEGER ninmax, nidmax, nkbmax, nalmax, nbemax
122  parameter( ninmax = 7, nidmax = 9, nkbmax = 7,
123  $ nalmax = 7, nbemax = 7 )
124 * .. Local Scalars ..
125  DOUBLE PRECISION eps, err, thresh
126  INTEGER i, isnum, j, n, nalf, nbet, nidim, ninc, nkb,
127  $ nout, ntra
128  LOGICAL fatal, ltestt, rewi, same, sfatal, trace,
129  $ tsterr
130  CHARACTER*1 trans
131  CHARACTER*6 snamet
132  CHARACTER*32 snaps, summry
133 * .. Local Arrays ..
134  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ),
135  $ alf( nalmax ), as( nmax*nmax ), bet( nbemax ),
136  $ g( nmax ), x( nmax ), xs( nmax*incmax ),
137  $ xx( nmax*incmax ), y( nmax ),
138  $ ys( nmax*incmax ), yt( nmax ),
139  $ yy( nmax*incmax ), z( 2*nmax )
140  INTEGER idim( nidmax ), inc( ninmax ), kb( nkbmax )
141  LOGICAL ltest( nsubs )
142  CHARACTER*6 snames( nsubs )
143 * .. External Functions ..
144  DOUBLE PRECISION ddiff
145  LOGICAL lde
146  EXTERNAL ddiff, lde
147 * .. External Subroutines ..
148  EXTERNAL dchk1, dchk2, dchk3, dchk4, dchk5, dchk6,
149  $ dchke, dmvch
150 * .. Intrinsic Functions ..
151  INTRINSIC abs, max, min
152 * .. Scalars in Common ..
153  INTEGER infot, noutc
154  LOGICAL lerr, ok
155  CHARACTER*6 srnamt
156 * .. Common blocks ..
157  COMMON /infoc/infot, noutc, ok, lerr
158  COMMON /srnamc/srnamt
159 * .. Data statements ..
160  DATA snames/'DGEMV ', 'DGBMV ', 'DSYMV ', 'DSBMV ',
161  $ 'DSPMV ', 'DTRMV ', 'DTBMV ', 'DTPMV ',
162  $ 'DTRSV ', 'DTBSV ', 'DTPSV ', 'DGER ',
163  $ 'DSYR ', 'DSPR ', 'DSYR2 ', 'DSPR2 '/
164 * .. Executable Statements ..
165 *
166 * Read name and unit number for summary output file and open file.
167 *
168  READ( nin, fmt = * )summry
169  READ( nin, fmt = * )nout
170  OPEN( nout, file = summry, status = 'UNKNOWN' )
171  noutc = nout
172 *
173 * Read name and unit number for snapshot output file and open file.
174 *
175  READ( nin, fmt = * )snaps
176  READ( nin, fmt = * )ntra
177  trace = ntra.GE.0
178  IF( trace )THEN
179  OPEN( ntra, file = snaps, status = 'UNKNOWN' )
180  END IF
181 * Read the flag that directs rewinding of the snapshot file.
182  READ( nin, fmt = * )rewi
183  rewi = rewi.AND.trace
184 * Read the flag that directs stopping on any failure.
185  READ( nin, fmt = * )sfatal
186 * Read the flag that indicates whether error exits are to be tested.
187  READ( nin, fmt = * )tsterr
188 * Read the threshold value of the test ratio
189  READ( nin, fmt = * )thresh
190 *
191 * Read and check the parameter values for the tests.
192 *
193 * Values of N
194  READ( nin, fmt = * )nidim
195  IF( nidim.LT.1.OR.nidim.GT.nidmax )THEN
196  WRITE( nout, fmt = 9997 )'N', nidmax
197  go to 230
198  END IF
199  READ( nin, fmt = * )( idim( i ), i = 1, nidim )
200  DO 10 i = 1, nidim
201  IF( idim( i ).LT.0.OR.idim( i ).GT.nmax )THEN
202  WRITE( nout, fmt = 9996 )nmax
203  go to 230
204  END IF
205  10 CONTINUE
206 * Values of K
207  READ( nin, fmt = * )nkb
208  IF( nkb.LT.1.OR.nkb.GT.nkbmax )THEN
209  WRITE( nout, fmt = 9997 )'K', nkbmax
210  go to 230
211  END IF
212  READ( nin, fmt = * )( kb( i ), i = 1, nkb )
213  DO 20 i = 1, nkb
214  IF( kb( i ).LT.0 )THEN
215  WRITE( nout, fmt = 9995 )
216  go to 230
217  END IF
218  20 CONTINUE
219 * Values of INCX and INCY
220  READ( nin, fmt = * )ninc
221  IF( ninc.LT.1.OR.ninc.GT.ninmax )THEN
222  WRITE( nout, fmt = 9997 )'INCX AND INCY', ninmax
223  go to 230
224  END IF
225  READ( nin, fmt = * )( inc( i ), i = 1, ninc )
226  DO 30 i = 1, ninc
227  IF( inc( i ).EQ.0.OR.abs( inc( i ) ).GT.incmax )THEN
228  WRITE( nout, fmt = 9994 )incmax
229  go to 230
230  END IF
231  30 CONTINUE
232 * Values of ALPHA
233  READ( nin, fmt = * )nalf
234  IF( nalf.LT.1.OR.nalf.GT.nalmax )THEN
235  WRITE( nout, fmt = 9997 )'ALPHA', nalmax
236  go to 230
237  END IF
238  READ( nin, fmt = * )( alf( i ), i = 1, nalf )
239 * Values of BETA
240  READ( nin, fmt = * )nbet
241  IF( nbet.LT.1.OR.nbet.GT.nbemax )THEN
242  WRITE( nout, fmt = 9997 )'BETA', nbemax
243  go to 230
244  END IF
245  READ( nin, fmt = * )( bet( i ), i = 1, nbet )
246 *
247 * Report values of parameters.
248 *
249  WRITE( nout, fmt = 9993 )
250  WRITE( nout, fmt = 9992 )( idim( i ), i = 1, nidim )
251  WRITE( nout, fmt = 9991 )( kb( i ), i = 1, nkb )
252  WRITE( nout, fmt = 9990 )( inc( i ), i = 1, ninc )
253  WRITE( nout, fmt = 9989 )( alf( i ), i = 1, nalf )
254  WRITE( nout, fmt = 9988 )( bet( i ), i = 1, nbet )
255  IF( .NOT.tsterr )THEN
256  WRITE( nout, fmt = * )
257  WRITE( nout, fmt = 9980 )
258  END IF
259  WRITE( nout, fmt = * )
260  WRITE( nout, fmt = 9999 )thresh
261  WRITE( nout, fmt = * )
262 *
263 * Read names of subroutines and flags which indicate
264 * whether they are to be tested.
265 *
266  DO 40 i = 1, nsubs
267  ltest( i ) = .false.
268  40 CONTINUE
269  50 READ( nin, fmt = 9984, END = 80 )snamet, ltestt
270  DO 60 i = 1, nsubs
271  IF( snamet.EQ.snames( i ) )
272  $ go to 70
273  60 CONTINUE
274  WRITE( nout, fmt = 9986 )snamet
275  stop
276  70 ltest( i ) = ltestt
277  go to 50
278 *
279  80 CONTINUE
280  CLOSE ( nin )
281 *
282 * Compute EPS (the machine precision).
283 *
284  eps = epsilon(zero)
285  WRITE( nout, fmt = 9998 )eps
286 *
287 * Check the reliability of DMVCH using exact data.
288 *
289  n = min( 32, nmax )
290  DO 120 j = 1, n
291  DO 110 i = 1, n
292  a( i, j ) = max( i - j + 1, 0 )
293  110 CONTINUE
294  x( j ) = j
295  y( j ) = zero
296  120 CONTINUE
297  DO 130 j = 1, n
298  yy( j ) = j*( ( j + 1 )*j )/2 - ( ( j + 1 )*j*( j - 1 ) )/3
299  130 CONTINUE
300 * YY holds the exact result. On exit from DMVCH YT holds
301 * the result computed by DMVCH.
302  trans = 'N'
303  CALL dmvch( trans, n, n, one, a, nmax, x, 1, zero, y, 1, yt, g,
304  $ yy, eps, err, fatal, nout, .true. )
305  same = lde( yy, yt, n )
306  IF( .NOT.same.OR.err.NE.zero )THEN
307  WRITE( nout, fmt = 9985 )trans, same, err
308  stop
309  END IF
310  trans = 'T'
311  CALL dmvch( trans, n, n, one, a, nmax, x, -1, zero, y, -1, yt, g,
312  $ yy, eps, err, fatal, nout, .true. )
313  same = lde( yy, yt, n )
314  IF( .NOT.same.OR.err.NE.zero )THEN
315  WRITE( nout, fmt = 9985 )trans, same, err
316  stop
317  END IF
318 *
319 * Test each subroutine in turn.
320 *
321  DO 210 isnum = 1, nsubs
322  WRITE( nout, fmt = * )
323  IF( .NOT.ltest( isnum ) )THEN
324 * Subprogram is not to be tested.
325  WRITE( nout, fmt = 9983 )snames( isnum )
326  ELSE
327  srnamt = snames( isnum )
328 * Test error exits.
329  IF( tsterr )THEN
330  CALL dchke( isnum, snames( isnum ), nout )
331  WRITE( nout, fmt = * )
332  END IF
333 * Test computations.
334  infot = 0
335  ok = .true.
336  fatal = .false.
337  go to( 140, 140, 150, 150, 150, 160, 160,
338  $ 160, 160, 160, 160, 170, 180, 180,
339  $ 190, 190 )isnum
340 * Test DGEMV, 01, and DGBMV, 02.
341  140 CALL dchk1( snames( isnum ), eps, thresh, nout, ntra, trace,
342  $ rewi, fatal, nidim, idim, nkb, kb, nalf, alf,
343  $ nbet, bet, ninc, inc, nmax, incmax, a, aa, as,
344  $ x, xx, xs, y, yy, ys, yt, g )
345  go to 200
346 * Test DSYMV, 03, DSBMV, 04, and DSPMV, 05.
347  150 CALL dchk2( snames( isnum ), eps, thresh, nout, ntra, trace,
348  $ rewi, fatal, nidim, idim, nkb, kb, nalf, alf,
349  $ nbet, bet, ninc, inc, nmax, incmax, a, aa, as,
350  $ x, xx, xs, y, yy, ys, yt, g )
351  go to 200
352 * Test DTRMV, 06, DTBMV, 07, DTPMV, 08,
353 * DTRSV, 09, DTBSV, 10, and DTPSV, 11.
354  160 CALL dchk3( snames( isnum ), eps, thresh, nout, ntra, trace,
355  $ rewi, fatal, nidim, idim, nkb, kb, ninc, inc,
356  $ nmax, incmax, a, aa, as, y, yy, ys, yt, g, z )
357  go to 200
358 * Test DGER, 12.
359  170 CALL dchk4( snames( isnum ), eps, thresh, nout, ntra, trace,
360  $ rewi, fatal, nidim, idim, nalf, alf, ninc, inc,
361  $ nmax, incmax, a, aa, as, x, xx, xs, y, yy, ys,
362  $ yt, g, z )
363  go to 200
364 * Test DSYR, 13, and DSPR, 14.
365  180 CALL dchk5( snames( isnum ), eps, thresh, nout, ntra, trace,
366  $ rewi, fatal, nidim, idim, nalf, alf, ninc, inc,
367  $ nmax, incmax, a, aa, as, x, xx, xs, y, yy, ys,
368  $ yt, g, z )
369  go to 200
370 * Test DSYR2, 15, and DSPR2, 16.
371  190 CALL dchk6( snames( isnum ), eps, thresh, nout, ntra, trace,
372  $ rewi, fatal, nidim, idim, nalf, alf, ninc, inc,
373  $ nmax, incmax, a, aa, as, x, xx, xs, y, yy, ys,
374  $ yt, g, z )
375 *
376  200 IF( fatal.AND.sfatal )
377  $ go to 220
378  END IF
379  210 CONTINUE
380  WRITE( nout, fmt = 9982 )
381  go to 240
382 *
383  220 CONTINUE
384  WRITE( nout, fmt = 9981 )
385  go to 240
386 *
387  230 CONTINUE
388  WRITE( nout, fmt = 9987 )
389 *
390  240 CONTINUE
391  IF( trace )
392  $ CLOSE ( ntra )
393  CLOSE ( nout )
394  stop
395 *
396  9999 FORMAT( ' ROUTINES PASS COMPUTATIONAL TESTS IF TEST RATIO IS LES',
397  $ 'S THAN', f8.2 )
398  9998 FORMAT( ' RELATIVE MACHINE PRECISION IS TAKEN TO BE', 1p, d9.1 )
399  9997 FORMAT( ' NUMBER OF VALUES OF ', a, ' IS LESS THAN 1 OR GREATER ',
400  $ 'THAN ', i2 )
401  9996 FORMAT( ' VALUE OF N IS LESS THAN 0 OR GREATER THAN ', i2 )
402  9995 FORMAT( ' VALUE OF K IS LESS THAN 0' )
403  9994 FORMAT( ' ABSOLUTE VALUE OF INCX OR INCY IS 0 OR GREATER THAN ',
404  $ i2 )
405  9993 FORMAT( ' TESTS OF THE DOUBLE PRECISION LEVEL 2 BLAS', //' THE F',
406  $ 'OLLOWING PARAMETER VALUES WILL BE USED:' )
407  9992 FORMAT( ' FOR N ', 9i6 )
408  9991 FORMAT( ' FOR K ', 7i6 )
409  9990 FORMAT( ' FOR INCX AND INCY ', 7i6 )
410  9989 FORMAT( ' FOR ALPHA ', 7f6.1 )
411  9988 FORMAT( ' FOR BETA ', 7f6.1 )
412  9987 FORMAT( ' AMEND DATA FILE OR INCREASE ARRAY SIZES IN PROGRAM',
413  $ /' ******* TESTS ABANDONED *******' )
414  9986 FORMAT( ' SUBPROGRAM NAME ', a6, ' NOT RECOGNIZED', /' ******* T',
415  $ 'ESTS ABANDONED *******' )
416  9985 FORMAT( ' ERROR IN DMVCH - IN-LINE DOT PRODUCTS ARE BEING EVALU',
417  $ 'ATED WRONGLY.', /' DMVCH WAS CALLED WITH TRANS = ', a1,
418  $ ' AND RETURNED SAME = ', l1, ' AND ERR = ', f12.3, '.', /
419  $ ' THIS MAY BE DUE TO FAULTS IN THE ARITHMETIC OR THE COMPILER.'
420  $ , /' ******* TESTS ABANDONED *******' )
421  9984 FORMAT( a6, l2 )
422  9983 FORMAT( 1x, a6, ' WAS NOT TESTED' )
423  9982 FORMAT( /' END OF TESTS' )
424  9981 FORMAT( /' ******* FATAL ERROR - TESTS ABANDONED *******' )
425  9980 FORMAT( ' ERROR-EXITS WILL NOT BE TESTED' )
426 *
427 * End of DBLAT2.
428 *
429  END
430  SUBROUTINE dchk1( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
431  $ fatal, nidim, idim, nkb, kb, nalf, alf, nbet,
432  $ bet, ninc, inc, nmax, incmax, a, aa, as, x, xx,
433  $ xs, y, yy, ys, yt, g )
434 *
435 * Tests DGEMV and DGBMV.
436 *
437 * Auxiliary routine for test program for Level 2 Blas.
438 *
439 * -- Written on 10-August-1987.
440 * Richard Hanson, Sandia National Labs.
441 * Jeremy Du Croz, NAG Central Office.
442 *
443 * .. Parameters ..
444  DOUBLE PRECISION zero, half
445  parameter( zero = 0.0d0, half = 0.5d0 )
446 * .. Scalar Arguments ..
447  DOUBLE PRECISION eps, thresh
448  INTEGER incmax, nalf, nbet, nidim, ninc, nkb, nmax,
449  $ nout, ntra
450  LOGICAL fatal, rewi, trace
451  CHARACTER*6 sname
452 * .. Array Arguments ..
453  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ), alf( nalf ),
454  $ as( nmax*nmax ), bet( nbet ), g( nmax ),
455  $ x( nmax ), xs( nmax*incmax ),
456  $ xx( nmax*incmax ), y( nmax ),
457  $ ys( nmax*incmax ), yt( nmax ),
458  $ yy( nmax*incmax )
459  INTEGER idim( nidim ), inc( ninc ), kb( nkb )
460 * .. Local Scalars ..
461  DOUBLE PRECISION alpha, als, beta, bls, err, errmax, transl
462  INTEGER i, ia, ib, ic, iku, im, in, incx, incxs, incy,
463  $ incys, ix, iy, kl, kls, ku, kus, laa, lda,
464  $ ldas, lx, ly, m, ml, ms, n, nargs, nc, nd, nk,
465  $ nl, ns
466  LOGICAL banded, full, null, reset, same, tran
467  CHARACTER*1 trans, transs
468  CHARACTER*3 ich
469 * .. Local Arrays ..
470  LOGICAL isame( 13 )
471 * .. External Functions ..
472  LOGICAL lde, lderes
473  EXTERNAL lde, lderes
474 * .. External Subroutines ..
475  EXTERNAL dgbmv, dgemv, dmake, dmvch
476 * .. Intrinsic Functions ..
477  INTRINSIC abs, max, min
478 * .. Scalars in Common ..
479  INTEGER infot, noutc
480  LOGICAL lerr, ok
481 * .. Common blocks ..
482  COMMON /infoc/infot, noutc, ok, lerr
483 * .. Data statements ..
484  DATA ich/'NTC'/
485 * .. Executable Statements ..
486  full = sname( 3: 3 ).EQ.'E'
487  banded = sname( 3: 3 ).EQ.'B'
488 * Define the number of arguments.
489  IF( full )THEN
490  nargs = 11
491  ELSE IF( banded )THEN
492  nargs = 13
493  END IF
494 *
495  nc = 0
496  reset = .true.
497  errmax = zero
498 *
499  DO 120 in = 1, nidim
500  n = idim( in )
501  nd = n/2 + 1
502 *
503  DO 110 im = 1, 2
504  IF( im.EQ.1 )
505  $ m = max( n - nd, 0 )
506  IF( im.EQ.2 )
507  $ m = min( n + nd, nmax )
508 *
509  IF( banded )THEN
510  nk = nkb
511  ELSE
512  nk = 1
513  END IF
514  DO 100 iku = 1, nk
515  IF( banded )THEN
516  ku = kb( iku )
517  kl = max( ku - 1, 0 )
518  ELSE
519  ku = n - 1
520  kl = m - 1
521  END IF
522 * Set LDA to 1 more than minimum value if room.
523  IF( banded )THEN
524  lda = kl + ku + 1
525  ELSE
526  lda = m
527  END IF
528  IF( lda.LT.nmax )
529  $ lda = lda + 1
530 * Skip tests if not enough room.
531  IF( lda.GT.nmax )
532  $ go to 100
533  laa = lda*n
534  null = n.LE.0.OR.m.LE.0
535 *
536 * Generate the matrix A.
537 *
538  transl = zero
539  CALL dmake( sname( 2: 3 ), ' ', ' ', m, n, a, nmax, aa,
540  $ lda, kl, ku, reset, transl )
541 *
542  DO 90 ic = 1, 3
543  trans = ich( ic: ic )
544  tran = trans.EQ.'T'.OR.trans.EQ.'C'
545 *
546  IF( tran )THEN
547  ml = n
548  nl = m
549  ELSE
550  ml = m
551  nl = n
552  END IF
553 *
554  DO 80 ix = 1, ninc
555  incx = inc( ix )
556  lx = abs( incx )*nl
557 *
558 * Generate the vector X.
559 *
560  transl = half
561  CALL dmake( 'GE', ' ', ' ', 1, nl, x, 1, xx,
562  $ abs( incx ), 0, nl - 1, reset, transl )
563  IF( nl.GT.1 )THEN
564  x( nl/2 ) = zero
565  xx( 1 + abs( incx )*( nl/2 - 1 ) ) = zero
566  END IF
567 *
568  DO 70 iy = 1, ninc
569  incy = inc( iy )
570  ly = abs( incy )*ml
571 *
572  DO 60 ia = 1, nalf
573  alpha = alf( ia )
574 *
575  DO 50 ib = 1, nbet
576  beta = bet( ib )
577 *
578 * Generate the vector Y.
579 *
580  transl = zero
581  CALL dmake( 'GE', ' ', ' ', 1, ml, y, 1,
582  $ yy, abs( incy ), 0, ml - 1,
583  $ reset, transl )
584 *
585  nc = nc + 1
586 *
587 * Save every datum before calling the
588 * subroutine.
589 *
590  transs = trans
591  ms = m
592  ns = n
593  kls = kl
594  kus = ku
595  als = alpha
596  DO 10 i = 1, laa
597  as( i ) = aa( i )
598  10 CONTINUE
599  ldas = lda
600  DO 20 i = 1, lx
601  xs( i ) = xx( i )
602  20 CONTINUE
603  incxs = incx
604  bls = beta
605  DO 30 i = 1, ly
606  ys( i ) = yy( i )
607  30 CONTINUE
608  incys = incy
609 *
610 * Call the subroutine.
611 *
612  IF( full )THEN
613  IF( trace )
614  $ WRITE( ntra, fmt = 9994 )nc, sname,
615  $ trans, m, n, alpha, lda, incx, beta,
616  $ incy
617  IF( rewi )
618  $ rewind ntra
619  CALL dgemv( trans, m, n, alpha, aa,
620  $ lda, xx, incx, beta, yy,
621  $ incy )
622  ELSE IF( banded )THEN
623  IF( trace )
624  $ WRITE( ntra, fmt = 9995 )nc, sname,
625  $ trans, m, n, kl, ku, alpha, lda,
626  $ incx, beta, incy
627  IF( rewi )
628  $ rewind ntra
629  CALL dgbmv( trans, m, n, kl, ku, alpha,
630  $ aa, lda, xx, incx, beta,
631  $ yy, incy )
632  END IF
633 *
634 * Check if error-exit was taken incorrectly.
635 *
636  IF( .NOT.ok )THEN
637  WRITE( nout, fmt = 9993 )
638  fatal = .true.
639  go to 130
640  END IF
641 *
642 * See what data changed inside subroutines.
643 *
644  isame( 1 ) = trans.EQ.transs
645  isame( 2 ) = ms.EQ.m
646  isame( 3 ) = ns.EQ.n
647  IF( full )THEN
648  isame( 4 ) = als.EQ.alpha
649  isame( 5 ) = lde( as, aa, laa )
650  isame( 6 ) = ldas.EQ.lda
651  isame( 7 ) = lde( xs, xx, lx )
652  isame( 8 ) = incxs.EQ.incx
653  isame( 9 ) = bls.EQ.beta
654  IF( null )THEN
655  isame( 10 ) = lde( ys, yy, ly )
656  ELSE
657  isame( 10 ) = lderes( 'GE', ' ', 1,
658  $ ml, ys, yy,
659  $ abs( incy ) )
660  END IF
661  isame( 11 ) = incys.EQ.incy
662  ELSE IF( banded )THEN
663  isame( 4 ) = kls.EQ.kl
664  isame( 5 ) = kus.EQ.ku
665  isame( 6 ) = als.EQ.alpha
666  isame( 7 ) = lde( as, aa, laa )
667  isame( 8 ) = ldas.EQ.lda
668  isame( 9 ) = lde( xs, xx, lx )
669  isame( 10 ) = incxs.EQ.incx
670  isame( 11 ) = bls.EQ.beta
671  IF( null )THEN
672  isame( 12 ) = lde( ys, yy, ly )
673  ELSE
674  isame( 12 ) = lderes( 'GE', ' ', 1,
675  $ ml, ys, yy,
676  $ abs( incy ) )
677  END IF
678  isame( 13 ) = incys.EQ.incy
679  END IF
680 *
681 * If data was incorrectly changed, report
682 * and return.
683 *
684  same = .true.
685  DO 40 i = 1, nargs
686  same = same.AND.isame( i )
687  IF( .NOT.isame( i ) )
688  $ WRITE( nout, fmt = 9998 )i
689  40 CONTINUE
690  IF( .NOT.same )THEN
691  fatal = .true.
692  go to 130
693  END IF
694 *
695  IF( .NOT.null )THEN
696 *
697 * Check the result.
698 *
699  CALL dmvch( trans, m, n, alpha, a,
700  $ nmax, x, incx, beta, y,
701  $ incy, yt, g, yy, eps, err,
702  $ fatal, nout, .true. )
703  errmax = max( errmax, err )
704 * If got really bad answer, report and
705 * return.
706  IF( fatal )
707  $ go to 130
708  ELSE
709 * Avoid repeating tests with M.le.0 or
710 * N.le.0.
711  go to 110
712  END IF
713 *
714  50 CONTINUE
715 *
716  60 CONTINUE
717 *
718  70 CONTINUE
719 *
720  80 CONTINUE
721 *
722  90 CONTINUE
723 *
724  100 CONTINUE
725 *
726  110 CONTINUE
727 *
728  120 CONTINUE
729 *
730 * Report result.
731 *
732  IF( errmax.LT.thresh )THEN
733  WRITE( nout, fmt = 9999 )sname, nc
734  ELSE
735  WRITE( nout, fmt = 9997 )sname, nc, errmax
736  END IF
737  go to 140
738 *
739  130 CONTINUE
740  WRITE( nout, fmt = 9996 )sname
741  IF( full )THEN
742  WRITE( nout, fmt = 9994 )nc, sname, trans, m, n, alpha, lda,
743  $ incx, beta, incy
744  ELSE IF( banded )THEN
745  WRITE( nout, fmt = 9995 )nc, sname, trans, m, n, kl, ku,
746  $ alpha, lda, incx, beta, incy
747  END IF
748 *
749  140 CONTINUE
750  RETURN
751 *
752  9999 FORMAT( ' ', a6, ' PASSED THE COMPUTATIONAL TESTS (', i6, ' CALL',
753  $ 'S)' )
754  9998 FORMAT( ' ******* FATAL ERROR - PARAMETER NUMBER ', i2, ' WAS CH',
755  $ 'ANGED INCORRECTLY *******' )
756  9997 FORMAT( ' ', a6, ' COMPLETED THE COMPUTATIONAL TESTS (', i6, ' C',
757  $ 'ALLS)', /' ******* BUT WITH MAXIMUM TEST RATIO', f8.2,
758  $ ' - SUSPECT *******' )
759  9996 FORMAT( ' ******* ', a6, ' FAILED ON CALL NUMBER:' )
760  9995 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', 4( i3, ',' ), f4.1,
761  $ ', A,', i3, ', X,', i2, ',', f4.1, ', Y,', i2, ') .' )
762  9994 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', 2( i3, ',' ), f4.1,
763  $ ', A,', i3, ', X,', i2, ',', f4.1, ', Y,', i2,
764  $ ') .' )
765  9993 FORMAT( ' ******* FATAL ERROR - ERROR-EXIT TAKEN ON VALID CALL *',
766  $ '******' )
767 *
768 * End of DCHK1.
769 *
770  END
771  SUBROUTINE dchk2( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
772  $ fatal, nidim, idim, nkb, kb, nalf, alf, nbet,
773  $ bet, ninc, inc, nmax, incmax, a, aa, as, x, xx,
774  $ xs, y, yy, ys, yt, g )
775 *
776 * Tests DSYMV, DSBMV and DSPMV.
777 *
778 * Auxiliary routine for test program for Level 2 Blas.
779 *
780 * -- Written on 10-August-1987.
781 * Richard Hanson, Sandia National Labs.
782 * Jeremy Du Croz, NAG Central Office.
783 *
784 * .. Parameters ..
785  DOUBLE PRECISION zero, half
786  parameter( zero = 0.0d0, half = 0.5d0 )
787 * .. Scalar Arguments ..
788  DOUBLE PRECISION eps, thresh
789  INTEGER incmax, nalf, nbet, nidim, ninc, nkb, nmax,
790  $ nout, ntra
791  LOGICAL fatal, rewi, trace
792  CHARACTER*6 sname
793 * .. Array Arguments ..
794  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ), alf( nalf ),
795  $ as( nmax*nmax ), bet( nbet ), g( nmax ),
796  $ x( nmax ), xs( nmax*incmax ),
797  $ xx( nmax*incmax ), y( nmax ),
798  $ ys( nmax*incmax ), yt( nmax ),
799  $ yy( nmax*incmax )
800  INTEGER idim( nidim ), inc( ninc ), kb( nkb )
801 * .. Local Scalars ..
802  DOUBLE PRECISION alpha, als, beta, bls, err, errmax, transl
803  INTEGER i, ia, ib, ic, ik, in, incx, incxs, incy,
804  $ incys, ix, iy, k, ks, laa, lda, ldas, lx, ly,
805  $ n, nargs, nc, nk, ns
806  LOGICAL banded, full, null, packed, reset, same
807  CHARACTER*1 uplo, uplos
808  CHARACTER*2 ich
809 * .. Local Arrays ..
810  LOGICAL isame( 13 )
811 * .. External Functions ..
812  LOGICAL lde, lderes
813  EXTERNAL lde, lderes
814 * .. External Subroutines ..
815  EXTERNAL dmake, dmvch, dsbmv, dspmv, dsymv
816 * .. Intrinsic Functions ..
817  INTRINSIC abs, max
818 * .. Scalars in Common ..
819  INTEGER infot, noutc
820  LOGICAL lerr, ok
821 * .. Common blocks ..
822  COMMON /infoc/infot, noutc, ok, lerr
823 * .. Data statements ..
824  DATA ich/'UL'/
825 * .. Executable Statements ..
826  full = sname( 3: 3 ).EQ.'Y'
827  banded = sname( 3: 3 ).EQ.'B'
828  packed = sname( 3: 3 ).EQ.'P'
829 * Define the number of arguments.
830  IF( full )THEN
831  nargs = 10
832  ELSE IF( banded )THEN
833  nargs = 11
834  ELSE IF( packed )THEN
835  nargs = 9
836  END IF
837 *
838  nc = 0
839  reset = .true.
840  errmax = zero
841 *
842  DO 110 in = 1, nidim
843  n = idim( in )
844 *
845  IF( banded )THEN
846  nk = nkb
847  ELSE
848  nk = 1
849  END IF
850  DO 100 ik = 1, nk
851  IF( banded )THEN
852  k = kb( ik )
853  ELSE
854  k = n - 1
855  END IF
856 * Set LDA to 1 more than minimum value if room.
857  IF( banded )THEN
858  lda = k + 1
859  ELSE
860  lda = n
861  END IF
862  IF( lda.LT.nmax )
863  $ lda = lda + 1
864 * Skip tests if not enough room.
865  IF( lda.GT.nmax )
866  $ go to 100
867  IF( packed )THEN
868  laa = ( n*( n + 1 ) )/2
869  ELSE
870  laa = lda*n
871  END IF
872  null = n.LE.0
873 *
874  DO 90 ic = 1, 2
875  uplo = ich( ic: ic )
876 *
877 * Generate the matrix A.
878 *
879  transl = zero
880  CALL dmake( sname( 2: 3 ), uplo, ' ', n, n, a, nmax, aa,
881  $ lda, k, k, reset, transl )
882 *
883  DO 80 ix = 1, ninc
884  incx = inc( ix )
885  lx = abs( incx )*n
886 *
887 * Generate the vector X.
888 *
889  transl = half
890  CALL dmake( 'GE', ' ', ' ', 1, n, x, 1, xx,
891  $ abs( incx ), 0, n - 1, reset, transl )
892  IF( n.GT.1 )THEN
893  x( n/2 ) = zero
894  xx( 1 + abs( incx )*( n/2 - 1 ) ) = zero
895  END IF
896 *
897  DO 70 iy = 1, ninc
898  incy = inc( iy )
899  ly = abs( incy )*n
900 *
901  DO 60 ia = 1, nalf
902  alpha = alf( ia )
903 *
904  DO 50 ib = 1, nbet
905  beta = bet( ib )
906 *
907 * Generate the vector Y.
908 *
909  transl = zero
910  CALL dmake( 'GE', ' ', ' ', 1, n, y, 1, yy,
911  $ abs( incy ), 0, n - 1, reset,
912  $ transl )
913 *
914  nc = nc + 1
915 *
916 * Save every datum before calling the
917 * subroutine.
918 *
919  uplos = uplo
920  ns = n
921  ks = k
922  als = alpha
923  DO 10 i = 1, laa
924  as( i ) = aa( i )
925  10 CONTINUE
926  ldas = lda
927  DO 20 i = 1, lx
928  xs( i ) = xx( i )
929  20 CONTINUE
930  incxs = incx
931  bls = beta
932  DO 30 i = 1, ly
933  ys( i ) = yy( i )
934  30 CONTINUE
935  incys = incy
936 *
937 * Call the subroutine.
938 *
939  IF( full )THEN
940  IF( trace )
941  $ WRITE( ntra, fmt = 9993 )nc, sname,
942  $ uplo, n, alpha, lda, incx, beta, incy
943  IF( rewi )
944  $ rewind ntra
945  CALL dsymv( uplo, n, alpha, aa, lda, xx,
946  $ incx, beta, yy, incy )
947  ELSE IF( banded )THEN
948  IF( trace )
949  $ WRITE( ntra, fmt = 9994 )nc, sname,
950  $ uplo, n, k, alpha, lda, incx, beta,
951  $ incy
952  IF( rewi )
953  $ rewind ntra
954  CALL dsbmv( uplo, n, k, alpha, aa, lda,
955  $ xx, incx, beta, yy, incy )
956  ELSE IF( packed )THEN
957  IF( trace )
958  $ WRITE( ntra, fmt = 9995 )nc, sname,
959  $ uplo, n, alpha, incx, beta, incy
960  IF( rewi )
961  $ rewind ntra
962  CALL dspmv( uplo, n, alpha, aa, xx, incx,
963  $ beta, yy, incy )
964  END IF
965 *
966 * Check if error-exit was taken incorrectly.
967 *
968  IF( .NOT.ok )THEN
969  WRITE( nout, fmt = 9992 )
970  fatal = .true.
971  go to 120
972  END IF
973 *
974 * See what data changed inside subroutines.
975 *
976  isame( 1 ) = uplo.EQ.uplos
977  isame( 2 ) = ns.EQ.n
978  IF( full )THEN
979  isame( 3 ) = als.EQ.alpha
980  isame( 4 ) = lde( as, aa, laa )
981  isame( 5 ) = ldas.EQ.lda
982  isame( 6 ) = lde( xs, xx, lx )
983  isame( 7 ) = incxs.EQ.incx
984  isame( 8 ) = bls.EQ.beta
985  IF( null )THEN
986  isame( 9 ) = lde( ys, yy, ly )
987  ELSE
988  isame( 9 ) = lderes( 'GE', ' ', 1, n,
989  $ ys, yy, abs( incy ) )
990  END IF
991  isame( 10 ) = incys.EQ.incy
992  ELSE IF( banded )THEN
993  isame( 3 ) = ks.EQ.k
994  isame( 4 ) = als.EQ.alpha
995  isame( 5 ) = lde( as, aa, laa )
996  isame( 6 ) = ldas.EQ.lda
997  isame( 7 ) = lde( xs, xx, lx )
998  isame( 8 ) = incxs.EQ.incx
999  isame( 9 ) = bls.EQ.beta
1000  IF( null )THEN
1001  isame( 10 ) = lde( ys, yy, ly )
1002  ELSE
1003  isame( 10 ) = lderes( 'GE', ' ', 1, n,
1004  $ ys, yy, abs( incy ) )
1005  END IF
1006  isame( 11 ) = incys.EQ.incy
1007  ELSE IF( packed )THEN
1008  isame( 3 ) = als.EQ.alpha
1009  isame( 4 ) = lde( as, aa, laa )
1010  isame( 5 ) = lde( xs, xx, lx )
1011  isame( 6 ) = incxs.EQ.incx
1012  isame( 7 ) = bls.EQ.beta
1013  IF( null )THEN
1014  isame( 8 ) = lde( ys, yy, ly )
1015  ELSE
1016  isame( 8 ) = lderes( 'GE', ' ', 1, n,
1017  $ ys, yy, abs( incy ) )
1018  END IF
1019  isame( 9 ) = incys.EQ.incy
1020  END IF
1021 *
1022 * If data was incorrectly changed, report and
1023 * return.
1024 *
1025  same = .true.
1026  DO 40 i = 1, nargs
1027  same = same.AND.isame( i )
1028  IF( .NOT.isame( i ) )
1029  $ WRITE( nout, fmt = 9998 )i
1030  40 CONTINUE
1031  IF( .NOT.same )THEN
1032  fatal = .true.
1033  go to 120
1034  END IF
1035 *
1036  IF( .NOT.null )THEN
1037 *
1038 * Check the result.
1039 *
1040  CALL dmvch( 'N', n, n, alpha, a, nmax, x,
1041  $ incx, beta, y, incy, yt, g,
1042  $ yy, eps, err, fatal, nout,
1043  $ .true. )
1044  errmax = max( errmax, err )
1045 * If got really bad answer, report and
1046 * return.
1047  IF( fatal )
1048  $ go to 120
1049  ELSE
1050 * Avoid repeating tests with N.le.0
1051  go to 110
1052  END IF
1053 *
1054  50 CONTINUE
1055 *
1056  60 CONTINUE
1057 *
1058  70 CONTINUE
1059 *
1060  80 CONTINUE
1061 *
1062  90 CONTINUE
1063 *
1064  100 CONTINUE
1065 *
1066  110 CONTINUE
1067 *
1068 * Report result.
1069 *
1070  IF( errmax.LT.thresh )THEN
1071  WRITE( nout, fmt = 9999 )sname, nc
1072  ELSE
1073  WRITE( nout, fmt = 9997 )sname, nc, errmax
1074  END IF
1075  go to 130
1076 *
1077  120 CONTINUE
1078  WRITE( nout, fmt = 9996 )sname
1079  IF( full )THEN
1080  WRITE( nout, fmt = 9993 )nc, sname, uplo, n, alpha, lda, incx,
1081  $ beta, incy
1082  ELSE IF( banded )THEN
1083  WRITE( nout, fmt = 9994 )nc, sname, uplo, n, k, alpha, lda,
1084  $ incx, beta, incy
1085  ELSE IF( packed )THEN
1086  WRITE( nout, fmt = 9995 )nc, sname, uplo, n, alpha, incx,
1087  $ beta, incy
1088  END IF
1089 *
1090  130 CONTINUE
1091  RETURN
1092 *
1093  9999 FORMAT( ' ', a6, ' PASSED THE COMPUTATIONAL TESTS (', i6, ' CALL',
1094  $ 'S)' )
1095  9998 FORMAT( ' ******* FATAL ERROR - PARAMETER NUMBER ', i2, ' WAS CH',
1096  $ 'ANGED INCORRECTLY *******' )
1097  9997 FORMAT( ' ', a6, ' COMPLETED THE COMPUTATIONAL TESTS (', i6, ' C',
1098  $ 'ALLS)', /' ******* BUT WITH MAXIMUM TEST RATIO', f8.2,
1099  $ ' - SUSPECT *******' )
1100  9996 FORMAT( ' ******* ', a6, ' FAILED ON CALL NUMBER:' )
1101  9995 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', i3, ',', f4.1, ', AP',
1102  $ ', X,', i2, ',', f4.1, ', Y,', i2, ') .' )
1103  9994 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', 2( i3, ',' ), f4.1,
1104  $ ', A,', i3, ', X,', i2, ',', f4.1, ', Y,', i2,
1105  $ ') .' )
1106  9993 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', i3, ',', f4.1, ', A,',
1107  $ i3, ', X,', i2, ',', f4.1, ', Y,', i2, ') .' )
1108  9992 FORMAT( ' ******* FATAL ERROR - ERROR-EXIT TAKEN ON VALID CALL *',
1109  $ '******' )
1110 *
1111 * End of DCHK2.
1112 *
1113  END
1114  SUBROUTINE dchk3( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
1115  $ fatal, nidim, idim, nkb, kb, ninc, inc, nmax,
1116  $ incmax, a, aa, as, x, xx, xs, xt, g, z )
1117 *
1118 * Tests DTRMV, DTBMV, DTPMV, DTRSV, DTBSV and DTPSV.
1119 *
1120 * Auxiliary routine for test program for Level 2 Blas.
1121 *
1122 * -- Written on 10-August-1987.
1123 * Richard Hanson, Sandia National Labs.
1124 * Jeremy Du Croz, NAG Central Office.
1125 *
1126 * .. Parameters ..
1127  DOUBLE PRECISION zero, half, one
1128  parameter( zero = 0.0d0, half = 0.5d0, one = 1.0d0 )
1129 * .. Scalar Arguments ..
1130  DOUBLE PRECISION eps, thresh
1131  INTEGER incmax, nidim, ninc, nkb, nmax, nout, ntra
1132  LOGICAL fatal, rewi, trace
1133  CHARACTER*6 sname
1134 * .. Array Arguments ..
1135  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ),
1136  $ as( nmax*nmax ), g( nmax ), x( nmax ),
1137  $ xs( nmax*incmax ), xt( nmax ),
1138  $ xx( nmax*incmax ), z( nmax )
1139  INTEGER idim( nidim ), inc( ninc ), kb( nkb )
1140 * .. Local Scalars ..
1141  DOUBLE PRECISION err, errmax, transl
1142  INTEGER i, icd, ict, icu, ik, in, incx, incxs, ix, k,
1143  $ ks, laa, lda, ldas, lx, n, nargs, nc, nk, ns
1144  LOGICAL banded, full, null, packed, reset, same
1145  CHARACTER*1 diag, diags, trans, transs, uplo, uplos
1146  CHARACTER*2 ichd, ichu
1147  CHARACTER*3 icht
1148 * .. Local Arrays ..
1149  LOGICAL isame( 13 )
1150 * .. External Functions ..
1151  LOGICAL lde, lderes
1152  EXTERNAL lde, lderes
1153 * .. External Subroutines ..
1154  EXTERNAL dmake, dmvch, dtbmv, dtbsv, dtpmv, dtpsv,
1155  $ dtrmv, dtrsv
1156 * .. Intrinsic Functions ..
1157  INTRINSIC abs, max
1158 * .. Scalars in Common ..
1159  INTEGER infot, noutc
1160  LOGICAL lerr, ok
1161 * .. Common blocks ..
1162  COMMON /infoc/infot, noutc, ok, lerr
1163 * .. Data statements ..
1164  DATA ichu/'UL'/, icht/'NTC'/, ichd/'UN'/
1165 * .. Executable Statements ..
1166  full = sname( 3: 3 ).EQ.'R'
1167  banded = sname( 3: 3 ).EQ.'B'
1168  packed = sname( 3: 3 ).EQ.'P'
1169 * Define the number of arguments.
1170  IF( full )THEN
1171  nargs = 8
1172  ELSE IF( banded )THEN
1173  nargs = 9
1174  ELSE IF( packed )THEN
1175  nargs = 7
1176  END IF
1177 *
1178  nc = 0
1179  reset = .true.
1180  errmax = zero
1181 * Set up zero vector for DMVCH.
1182  DO 10 i = 1, nmax
1183  z( i ) = zero
1184  10 CONTINUE
1185 *
1186  DO 110 in = 1, nidim
1187  n = idim( in )
1188 *
1189  IF( banded )THEN
1190  nk = nkb
1191  ELSE
1192  nk = 1
1193  END IF
1194  DO 100 ik = 1, nk
1195  IF( banded )THEN
1196  k = kb( ik )
1197  ELSE
1198  k = n - 1
1199  END IF
1200 * Set LDA to 1 more than minimum value if room.
1201  IF( banded )THEN
1202  lda = k + 1
1203  ELSE
1204  lda = n
1205  END IF
1206  IF( lda.LT.nmax )
1207  $ lda = lda + 1
1208 * Skip tests if not enough room.
1209  IF( lda.GT.nmax )
1210  $ go to 100
1211  IF( packed )THEN
1212  laa = ( n*( n + 1 ) )/2
1213  ELSE
1214  laa = lda*n
1215  END IF
1216  null = n.LE.0
1217 *
1218  DO 90 icu = 1, 2
1219  uplo = ichu( icu: icu )
1220 *
1221  DO 80 ict = 1, 3
1222  trans = icht( ict: ict )
1223 *
1224  DO 70 icd = 1, 2
1225  diag = ichd( icd: icd )
1226 *
1227 * Generate the matrix A.
1228 *
1229  transl = zero
1230  CALL dmake( sname( 2: 3 ), uplo, diag, n, n, a,
1231  $ nmax, aa, lda, k, k, reset, transl )
1232 *
1233  DO 60 ix = 1, ninc
1234  incx = inc( ix )
1235  lx = abs( incx )*n
1236 *
1237 * Generate the vector X.
1238 *
1239  transl = half
1240  CALL dmake( 'GE', ' ', ' ', 1, n, x, 1, xx,
1241  $ abs( incx ), 0, n - 1, reset,
1242  $ transl )
1243  IF( n.GT.1 )THEN
1244  x( n/2 ) = zero
1245  xx( 1 + abs( incx )*( n/2 - 1 ) ) = zero
1246  END IF
1247 *
1248  nc = nc + 1
1249 *
1250 * Save every datum before calling the subroutine.
1251 *
1252  uplos = uplo
1253  transs = trans
1254  diags = diag
1255  ns = n
1256  ks = k
1257  DO 20 i = 1, laa
1258  as( i ) = aa( i )
1259  20 CONTINUE
1260  ldas = lda
1261  DO 30 i = 1, lx
1262  xs( i ) = xx( i )
1263  30 CONTINUE
1264  incxs = incx
1265 *
1266 * Call the subroutine.
1267 *
1268  IF( sname( 4: 5 ).EQ.'MV' )THEN
1269  IF( full )THEN
1270  IF( trace )
1271  $ WRITE( ntra, fmt = 9993 )nc, sname,
1272  $ uplo, trans, diag, n, lda, incx
1273  IF( rewi )
1274  $ rewind ntra
1275  CALL dtrmv( uplo, trans, diag, n, aa, lda,
1276  $ xx, incx )
1277  ELSE IF( banded )THEN
1278  IF( trace )
1279  $ WRITE( ntra, fmt = 9994 )nc, sname,
1280  $ uplo, trans, diag, n, k, lda, incx
1281  IF( rewi )
1282  $ rewind ntra
1283  CALL dtbmv( uplo, trans, diag, n, k, aa,
1284  $ lda, xx, incx )
1285  ELSE IF( packed )THEN
1286  IF( trace )
1287  $ WRITE( ntra, fmt = 9995 )nc, sname,
1288  $ uplo, trans, diag, n, incx
1289  IF( rewi )
1290  $ rewind ntra
1291  CALL dtpmv( uplo, trans, diag, n, aa, xx,
1292  $ incx )
1293  END IF
1294  ELSE IF( sname( 4: 5 ).EQ.'SV' )THEN
1295  IF( full )THEN
1296  IF( trace )
1297  $ WRITE( ntra, fmt = 9993 )nc, sname,
1298  $ uplo, trans, diag, n, lda, incx
1299  IF( rewi )
1300  $ rewind ntra
1301  CALL dtrsv( uplo, trans, diag, n, aa, lda,
1302  $ xx, incx )
1303  ELSE IF( banded )THEN
1304  IF( trace )
1305  $ WRITE( ntra, fmt = 9994 )nc, sname,
1306  $ uplo, trans, diag, n, k, lda, incx
1307  IF( rewi )
1308  $ rewind ntra
1309  CALL dtbsv( uplo, trans, diag, n, k, aa,
1310  $ lda, xx, incx )
1311  ELSE IF( packed )THEN
1312  IF( trace )
1313  $ WRITE( ntra, fmt = 9995 )nc, sname,
1314  $ uplo, trans, diag, n, incx
1315  IF( rewi )
1316  $ rewind ntra
1317  CALL dtpsv( uplo, trans, diag, n, aa, xx,
1318  $ incx )
1319  END IF
1320  END IF
1321 *
1322 * Check if error-exit was taken incorrectly.
1323 *
1324  IF( .NOT.ok )THEN
1325  WRITE( nout, fmt = 9992 )
1326  fatal = .true.
1327  go to 120
1328  END IF
1329 *
1330 * See what data changed inside subroutines.
1331 *
1332  isame( 1 ) = uplo.EQ.uplos
1333  isame( 2 ) = trans.EQ.transs
1334  isame( 3 ) = diag.EQ.diags
1335  isame( 4 ) = ns.EQ.n
1336  IF( full )THEN
1337  isame( 5 ) = lde( as, aa, laa )
1338  isame( 6 ) = ldas.EQ.lda
1339  IF( null )THEN
1340  isame( 7 ) = lde( xs, xx, lx )
1341  ELSE
1342  isame( 7 ) = lderes( 'GE', ' ', 1, n, xs,
1343  $ xx, abs( incx ) )
1344  END IF
1345  isame( 8 ) = incxs.EQ.incx
1346  ELSE IF( banded )THEN
1347  isame( 5 ) = ks.EQ.k
1348  isame( 6 ) = lde( as, aa, laa )
1349  isame( 7 ) = ldas.EQ.lda
1350  IF( null )THEN
1351  isame( 8 ) = lde( xs, xx, lx )
1352  ELSE
1353  isame( 8 ) = lderes( 'GE', ' ', 1, n, xs,
1354  $ xx, abs( incx ) )
1355  END IF
1356  isame( 9 ) = incxs.EQ.incx
1357  ELSE IF( packed )THEN
1358  isame( 5 ) = lde( as, aa, laa )
1359  IF( null )THEN
1360  isame( 6 ) = lde( xs, xx, lx )
1361  ELSE
1362  isame( 6 ) = lderes( 'GE', ' ', 1, n, xs,
1363  $ xx, abs( incx ) )
1364  END IF
1365  isame( 7 ) = incxs.EQ.incx
1366  END IF
1367 *
1368 * If data was incorrectly changed, report and
1369 * return.
1370 *
1371  same = .true.
1372  DO 40 i = 1, nargs
1373  same = same.AND.isame( i )
1374  IF( .NOT.isame( i ) )
1375  $ WRITE( nout, fmt = 9998 )i
1376  40 CONTINUE
1377  IF( .NOT.same )THEN
1378  fatal = .true.
1379  go to 120
1380  END IF
1381 *
1382  IF( .NOT.null )THEN
1383  IF( sname( 4: 5 ).EQ.'MV' )THEN
1384 *
1385 * Check the result.
1386 *
1387  CALL dmvch( trans, n, n, one, a, nmax, x,
1388  $ incx, zero, z, incx, xt, g,
1389  $ xx, eps, err, fatal, nout,
1390  $ .true. )
1391  ELSE IF( sname( 4: 5 ).EQ.'SV' )THEN
1392 *
1393 * Compute approximation to original vector.
1394 *
1395  DO 50 i = 1, n
1396  z( i ) = xx( 1 + ( i - 1 )*
1397  $ abs( incx ) )
1398  xx( 1 + ( i - 1 )*abs( incx ) )
1399  $ = x( i )
1400  50 CONTINUE
1401  CALL dmvch( trans, n, n, one, a, nmax, z,
1402  $ incx, zero, x, incx, xt, g,
1403  $ xx, eps, err, fatal, nout,
1404  $ .false. )
1405  END IF
1406  errmax = max( errmax, err )
1407 * If got really bad answer, report and return.
1408  IF( fatal )
1409  $ go to 120
1410  ELSE
1411 * Avoid repeating tests with N.le.0.
1412  go to 110
1413  END IF
1414 *
1415  60 CONTINUE
1416 *
1417  70 CONTINUE
1418 *
1419  80 CONTINUE
1420 *
1421  90 CONTINUE
1422 *
1423  100 CONTINUE
1424 *
1425  110 CONTINUE
1426 *
1427 * Report result.
1428 *
1429  IF( errmax.LT.thresh )THEN
1430  WRITE( nout, fmt = 9999 )sname, nc
1431  ELSE
1432  WRITE( nout, fmt = 9997 )sname, nc, errmax
1433  END IF
1434  go to 130
1435 *
1436  120 CONTINUE
1437  WRITE( nout, fmt = 9996 )sname
1438  IF( full )THEN
1439  WRITE( nout, fmt = 9993 )nc, sname, uplo, trans, diag, n, lda,
1440  $ incx
1441  ELSE IF( banded )THEN
1442  WRITE( nout, fmt = 9994 )nc, sname, uplo, trans, diag, n, k,
1443  $ lda, incx
1444  ELSE IF( packed )THEN
1445  WRITE( nout, fmt = 9995 )nc, sname, uplo, trans, diag, n, incx
1446  END IF
1447 *
1448  130 CONTINUE
1449  RETURN
1450 *
1451  9999 FORMAT( ' ', a6, ' PASSED THE COMPUTATIONAL TESTS (', i6, ' CALL',
1452  $ 'S)' )
1453  9998 FORMAT( ' ******* FATAL ERROR - PARAMETER NUMBER ', i2, ' WAS CH',
1454  $ 'ANGED INCORRECTLY *******' )
1455  9997 FORMAT( ' ', a6, ' COMPLETED THE COMPUTATIONAL TESTS (', i6, ' C',
1456  $ 'ALLS)', /' ******* BUT WITH MAXIMUM TEST RATIO', f8.2,
1457  $ ' - SUSPECT *******' )
1458  9996 FORMAT( ' ******* ', a6, ' FAILED ON CALL NUMBER:' )
1459  9995 FORMAT( 1x, i6, ': ', a6, '(', 3( '''', a1, ''',' ), i3, ', AP, ',
1460  $ 'X,', i2, ') .' )
1461  9994 FORMAT( 1x, i6, ': ', a6, '(', 3( '''', a1, ''',' ), 2( i3, ',' ),
1462  $ ' A,', i3, ', X,', i2, ') .' )
1463  9993 FORMAT( 1x, i6, ': ', a6, '(', 3( '''', a1, ''',' ), i3, ', A,',
1464  $ i3, ', X,', i2, ') .' )
1465  9992 FORMAT( ' ******* FATAL ERROR - ERROR-EXIT TAKEN ON VALID CALL *',
1466  $ '******' )
1467 *
1468 * End of DCHK3.
1469 *
1470  END
1471  SUBROUTINE dchk4( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
1472  $ fatal, nidim, idim, nalf, alf, ninc, inc, nmax,
1473  $ incmax, a, aa, as, x, xx, xs, y, yy, ys, yt, g,
1474  $ z )
1475 *
1476 * Tests DGER.
1477 *
1478 * Auxiliary routine for test program for Level 2 Blas.
1479 *
1480 * -- Written on 10-August-1987.
1481 * Richard Hanson, Sandia National Labs.
1482 * Jeremy Du Croz, NAG Central Office.
1483 *
1484 * .. Parameters ..
1485  DOUBLE PRECISION zero, half, one
1486  parameter( zero = 0.0d0, half = 0.5d0, one = 1.0d0 )
1487 * .. Scalar Arguments ..
1488  DOUBLE PRECISION eps, thresh
1489  INTEGER incmax, nalf, nidim, ninc, nmax, nout, ntra
1490  LOGICAL fatal, rewi, trace
1491  CHARACTER*6 sname
1492 * .. Array Arguments ..
1493  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ), alf( nalf ),
1494  $ as( nmax*nmax ), g( nmax ), x( nmax ),
1495  $ xs( nmax*incmax ), xx( nmax*incmax ),
1496  $ y( nmax ), ys( nmax*incmax ), yt( nmax ),
1497  $ yy( nmax*incmax ), z( nmax )
1498  INTEGER idim( nidim ), inc( ninc )
1499 * .. Local Scalars ..
1500  DOUBLE PRECISION alpha, als, err, errmax, transl
1501  INTEGER i, ia, im, in, incx, incxs, incy, incys, ix,
1502  $ iy, j, laa, lda, ldas, lx, ly, m, ms, n, nargs,
1503  $ nc, nd, ns
1504  LOGICAL null, reset, same
1505 * .. Local Arrays ..
1506  DOUBLE PRECISION w( 1 )
1507  LOGICAL isame( 13 )
1508 * .. External Functions ..
1509  LOGICAL lde, lderes
1510  EXTERNAL lde, lderes
1511 * .. External Subroutines ..
1512  EXTERNAL dger, dmake, dmvch
1513 * .. Intrinsic Functions ..
1514  INTRINSIC abs, max, min
1515 * .. Scalars in Common ..
1516  INTEGER infot, noutc
1517  LOGICAL lerr, ok
1518 * .. Common blocks ..
1519  COMMON /infoc/infot, noutc, ok, lerr
1520 * .. Executable Statements ..
1521 * Define the number of arguments.
1522  nargs = 9
1523 *
1524  nc = 0
1525  reset = .true.
1526  errmax = zero
1527 *
1528  DO 120 in = 1, nidim
1529  n = idim( in )
1530  nd = n/2 + 1
1531 *
1532  DO 110 im = 1, 2
1533  IF( im.EQ.1 )
1534  $ m = max( n - nd, 0 )
1535  IF( im.EQ.2 )
1536  $ m = min( n + nd, nmax )
1537 *
1538 * Set LDA to 1 more than minimum value if room.
1539  lda = m
1540  IF( lda.LT.nmax )
1541  $ lda = lda + 1
1542 * Skip tests if not enough room.
1543  IF( lda.GT.nmax )
1544  $ go to 110
1545  laa = lda*n
1546  null = n.LE.0.OR.m.LE.0
1547 *
1548  DO 100 ix = 1, ninc
1549  incx = inc( ix )
1550  lx = abs( incx )*m
1551 *
1552 * Generate the vector X.
1553 *
1554  transl = half
1555  CALL dmake( 'GE', ' ', ' ', 1, m, x, 1, xx, abs( incx ),
1556  $ 0, m - 1, reset, transl )
1557  IF( m.GT.1 )THEN
1558  x( m/2 ) = zero
1559  xx( 1 + abs( incx )*( m/2 - 1 ) ) = zero
1560  END IF
1561 *
1562  DO 90 iy = 1, ninc
1563  incy = inc( iy )
1564  ly = abs( incy )*n
1565 *
1566 * Generate the vector Y.
1567 *
1568  transl = zero
1569  CALL dmake( 'GE', ' ', ' ', 1, n, y, 1, yy,
1570  $ abs( incy ), 0, n - 1, reset, transl )
1571  IF( n.GT.1 )THEN
1572  y( n/2 ) = zero
1573  yy( 1 + abs( incy )*( n/2 - 1 ) ) = zero
1574  END IF
1575 *
1576  DO 80 ia = 1, nalf
1577  alpha = alf( ia )
1578 *
1579 * Generate the matrix A.
1580 *
1581  transl = zero
1582  CALL dmake( sname( 2: 3 ), ' ', ' ', m, n, a, nmax,
1583  $ aa, lda, m - 1, n - 1, reset, transl )
1584 *
1585  nc = nc + 1
1586 *
1587 * Save every datum before calling the subroutine.
1588 *
1589  ms = m
1590  ns = n
1591  als = alpha
1592  DO 10 i = 1, laa
1593  as( i ) = aa( i )
1594  10 CONTINUE
1595  ldas = lda
1596  DO 20 i = 1, lx
1597  xs( i ) = xx( i )
1598  20 CONTINUE
1599  incxs = incx
1600  DO 30 i = 1, ly
1601  ys( i ) = yy( i )
1602  30 CONTINUE
1603  incys = incy
1604 *
1605 * Call the subroutine.
1606 *
1607  IF( trace )
1608  $ WRITE( ntra, fmt = 9994 )nc, sname, m, n,
1609  $ alpha, incx, incy, lda
1610  IF( rewi )
1611  $ rewind ntra
1612  CALL dger( m, n, alpha, xx, incx, yy, incy, aa,
1613  $ lda )
1614 *
1615 * Check if error-exit was taken incorrectly.
1616 *
1617  IF( .NOT.ok )THEN
1618  WRITE( nout, fmt = 9993 )
1619  fatal = .true.
1620  go to 140
1621  END IF
1622 *
1623 * See what data changed inside subroutine.
1624 *
1625  isame( 1 ) = ms.EQ.m
1626  isame( 2 ) = ns.EQ.n
1627  isame( 3 ) = als.EQ.alpha
1628  isame( 4 ) = lde( xs, xx, lx )
1629  isame( 5 ) = incxs.EQ.incx
1630  isame( 6 ) = lde( ys, yy, ly )
1631  isame( 7 ) = incys.EQ.incy
1632  IF( null )THEN
1633  isame( 8 ) = lde( as, aa, laa )
1634  ELSE
1635  isame( 8 ) = lderes( 'GE', ' ', m, n, as, aa,
1636  $ lda )
1637  END IF
1638  isame( 9 ) = ldas.EQ.lda
1639 *
1640 * If data was incorrectly changed, report and return.
1641 *
1642  same = .true.
1643  DO 40 i = 1, nargs
1644  same = same.AND.isame( i )
1645  IF( .NOT.isame( i ) )
1646  $ WRITE( nout, fmt = 9998 )i
1647  40 CONTINUE
1648  IF( .NOT.same )THEN
1649  fatal = .true.
1650  go to 140
1651  END IF
1652 *
1653  IF( .NOT.null )THEN
1654 *
1655 * Check the result column by column.
1656 *
1657  IF( incx.GT.0 )THEN
1658  DO 50 i = 1, m
1659  z( i ) = x( i )
1660  50 CONTINUE
1661  ELSE
1662  DO 60 i = 1, m
1663  z( i ) = x( m - i + 1 )
1664  60 CONTINUE
1665  END IF
1666  DO 70 j = 1, n
1667  IF( incy.GT.0 )THEN
1668  w( 1 ) = y( j )
1669  ELSE
1670  w( 1 ) = y( n - j + 1 )
1671  END IF
1672  CALL dmvch( 'N', m, 1, alpha, z, nmax, w, 1,
1673  $ one, a( 1, j ), 1, yt, g,
1674  $ aa( 1 + ( j - 1 )*lda ), eps,
1675  $ err, fatal, nout, .true. )
1676  errmax = max( errmax, err )
1677 * If got really bad answer, report and return.
1678  IF( fatal )
1679  $ go to 130
1680  70 CONTINUE
1681  ELSE
1682 * Avoid repeating tests with M.le.0 or N.le.0.
1683  go to 110
1684  END IF
1685 *
1686  80 CONTINUE
1687 *
1688  90 CONTINUE
1689 *
1690  100 CONTINUE
1691 *
1692  110 CONTINUE
1693 *
1694  120 CONTINUE
1695 *
1696 * Report result.
1697 *
1698  IF( errmax.LT.thresh )THEN
1699  WRITE( nout, fmt = 9999 )sname, nc
1700  ELSE
1701  WRITE( nout, fmt = 9997 )sname, nc, errmax
1702  END IF
1703  go to 150
1704 *
1705  130 CONTINUE
1706  WRITE( nout, fmt = 9995 )j
1707 *
1708  140 CONTINUE
1709  WRITE( nout, fmt = 9996 )sname
1710  WRITE( nout, fmt = 9994 )nc, sname, m, n, alpha, incx, incy, lda
1711 *
1712  150 CONTINUE
1713  RETURN
1714 *
1715  9999 FORMAT( ' ', a6, ' PASSED THE COMPUTATIONAL TESTS (', i6, ' CALL',
1716  $ 'S)' )
1717  9998 FORMAT( ' ******* FATAL ERROR - PARAMETER NUMBER ', i2, ' WAS CH',
1718  $ 'ANGED INCORRECTLY *******' )
1719  9997 FORMAT( ' ', a6, ' COMPLETED THE COMPUTATIONAL TESTS (', i6, ' C',
1720  $ 'ALLS)', /' ******* BUT WITH MAXIMUM TEST RATIO', f8.2,
1721  $ ' - SUSPECT *******' )
1722  9996 FORMAT( ' ******* ', a6, ' FAILED ON CALL NUMBER:' )
1723  9995 FORMAT( ' THESE ARE THE RESULTS FOR COLUMN ', i3 )
1724  9994 FORMAT( 1x, i6, ': ', a6, '(', 2( i3, ',' ), f4.1, ', X,', i2,
1725  $ ', Y,', i2, ', A,', i3, ') .' )
1726  9993 FORMAT( ' ******* FATAL ERROR - ERROR-EXIT TAKEN ON VALID CALL *',
1727  $ '******' )
1728 *
1729 * End of DCHK4.
1730 *
1731  END
1732  SUBROUTINE dchk5( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
1733  $ fatal, nidim, idim, nalf, alf, ninc, inc, nmax,
1734  $ incmax, a, aa, as, x, xx, xs, y, yy, ys, yt, g,
1735  $ z )
1736 *
1737 * Tests DSYR and DSPR.
1738 *
1739 * Auxiliary routine for test program for Level 2 Blas.
1740 *
1741 * -- Written on 10-August-1987.
1742 * Richard Hanson, Sandia National Labs.
1743 * Jeremy Du Croz, NAG Central Office.
1744 *
1745 * .. Parameters ..
1746  DOUBLE PRECISION zero, half, one
1747  parameter( zero = 0.0d0, half = 0.5d0, one = 1.0d0 )
1748 * .. Scalar Arguments ..
1749  DOUBLE PRECISION eps, thresh
1750  INTEGER incmax, nalf, nidim, ninc, nmax, nout, ntra
1751  LOGICAL fatal, rewi, trace
1752  CHARACTER*6 sname
1753 * .. Array Arguments ..
1754  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ), alf( nalf ),
1755  $ as( nmax*nmax ), g( nmax ), x( nmax ),
1756  $ xs( nmax*incmax ), xx( nmax*incmax ),
1757  $ y( nmax ), ys( nmax*incmax ), yt( nmax ),
1758  $ yy( nmax*incmax ), z( nmax )
1759  INTEGER idim( nidim ), inc( ninc )
1760 * .. Local Scalars ..
1761  DOUBLE PRECISION alpha, als, err, errmax, transl
1762  INTEGER i, ia, ic, in, incx, incxs, ix, j, ja, jj, laa,
1763  $ lda, ldas, lj, lx, n, nargs, nc, ns
1764  LOGICAL full, null, packed, reset, same, upper
1765  CHARACTER*1 uplo, uplos
1766  CHARACTER*2 ich
1767 * .. Local Arrays ..
1768  DOUBLE PRECISION w( 1 )
1769  LOGICAL isame( 13 )
1770 * .. External Functions ..
1771  LOGICAL lde, lderes
1772  EXTERNAL lde, lderes
1773 * .. External Subroutines ..
1774  EXTERNAL dmake, dmvch, dspr, dsyr
1775 * .. Intrinsic Functions ..
1776  INTRINSIC abs, max
1777 * .. Scalars in Common ..
1778  INTEGER infot, noutc
1779  LOGICAL lerr, ok
1780 * .. Common blocks ..
1781  COMMON /infoc/infot, noutc, ok, lerr
1782 * .. Data statements ..
1783  DATA ich/'UL'/
1784 * .. Executable Statements ..
1785  full = sname( 3: 3 ).EQ.'Y'
1786  packed = sname( 3: 3 ).EQ.'P'
1787 * Define the number of arguments.
1788  IF( full )THEN
1789  nargs = 7
1790  ELSE IF( packed )THEN
1791  nargs = 6
1792  END IF
1793 *
1794  nc = 0
1795  reset = .true.
1796  errmax = zero
1797 *
1798  DO 100 in = 1, nidim
1799  n = idim( in )
1800 * Set LDA to 1 more than minimum value if room.
1801  lda = n
1802  IF( lda.LT.nmax )
1803  $ lda = lda + 1
1804 * Skip tests if not enough room.
1805  IF( lda.GT.nmax )
1806  $ go to 100
1807  IF( packed )THEN
1808  laa = ( n*( n + 1 ) )/2
1809  ELSE
1810  laa = lda*n
1811  END IF
1812 *
1813  DO 90 ic = 1, 2
1814  uplo = ich( ic: ic )
1815  upper = uplo.EQ.'U'
1816 *
1817  DO 80 ix = 1, ninc
1818  incx = inc( ix )
1819  lx = abs( incx )*n
1820 *
1821 * Generate the vector X.
1822 *
1823  transl = half
1824  CALL dmake( 'GE', ' ', ' ', 1, n, x, 1, xx, abs( incx ),
1825  $ 0, n - 1, reset, transl )
1826  IF( n.GT.1 )THEN
1827  x( n/2 ) = zero
1828  xx( 1 + abs( incx )*( n/2 - 1 ) ) = zero
1829  END IF
1830 *
1831  DO 70 ia = 1, nalf
1832  alpha = alf( ia )
1833  null = n.LE.0.OR.alpha.EQ.zero
1834 *
1835 * Generate the matrix A.
1836 *
1837  transl = zero
1838  CALL dmake( sname( 2: 3 ), uplo, ' ', n, n, a, nmax,
1839  $ aa, lda, n - 1, n - 1, reset, transl )
1840 *
1841  nc = nc + 1
1842 *
1843 * Save every datum before calling the subroutine.
1844 *
1845  uplos = uplo
1846  ns = n
1847  als = alpha
1848  DO 10 i = 1, laa
1849  as( i ) = aa( i )
1850  10 CONTINUE
1851  ldas = lda
1852  DO 20 i = 1, lx
1853  xs( i ) = xx( i )
1854  20 CONTINUE
1855  incxs = incx
1856 *
1857 * Call the subroutine.
1858 *
1859  IF( full )THEN
1860  IF( trace )
1861  $ WRITE( ntra, fmt = 9993 )nc, sname, uplo, n,
1862  $ alpha, incx, lda
1863  IF( rewi )
1864  $ rewind ntra
1865  CALL dsyr( uplo, n, alpha, xx, incx, aa, lda )
1866  ELSE IF( packed )THEN
1867  IF( trace )
1868  $ WRITE( ntra, fmt = 9994 )nc, sname, uplo, n,
1869  $ alpha, incx
1870  IF( rewi )
1871  $ rewind ntra
1872  CALL dspr( uplo, n, alpha, xx, incx, aa )
1873  END IF
1874 *
1875 * Check if error-exit was taken incorrectly.
1876 *
1877  IF( .NOT.ok )THEN
1878  WRITE( nout, fmt = 9992 )
1879  fatal = .true.
1880  go to 120
1881  END IF
1882 *
1883 * See what data changed inside subroutines.
1884 *
1885  isame( 1 ) = uplo.EQ.uplos
1886  isame( 2 ) = ns.EQ.n
1887  isame( 3 ) = als.EQ.alpha
1888  isame( 4 ) = lde( xs, xx, lx )
1889  isame( 5 ) = incxs.EQ.incx
1890  IF( null )THEN
1891  isame( 6 ) = lde( as, aa, laa )
1892  ELSE
1893  isame( 6 ) = lderes( sname( 2: 3 ), uplo, n, n, as,
1894  $ aa, lda )
1895  END IF
1896  IF( .NOT.packed )THEN
1897  isame( 7 ) = ldas.EQ.lda
1898  END IF
1899 *
1900 * If data was incorrectly changed, report and return.
1901 *
1902  same = .true.
1903  DO 30 i = 1, nargs
1904  same = same.AND.isame( i )
1905  IF( .NOT.isame( i ) )
1906  $ WRITE( nout, fmt = 9998 )i
1907  30 CONTINUE
1908  IF( .NOT.same )THEN
1909  fatal = .true.
1910  go to 120
1911  END IF
1912 *
1913  IF( .NOT.null )THEN
1914 *
1915 * Check the result column by column.
1916 *
1917  IF( incx.GT.0 )THEN
1918  DO 40 i = 1, n
1919  z( i ) = x( i )
1920  40 CONTINUE
1921  ELSE
1922  DO 50 i = 1, n
1923  z( i ) = x( n - i + 1 )
1924  50 CONTINUE
1925  END IF
1926  ja = 1
1927  DO 60 j = 1, n
1928  w( 1 ) = z( j )
1929  IF( upper )THEN
1930  jj = 1
1931  lj = j
1932  ELSE
1933  jj = j
1934  lj = n - j + 1
1935  END IF
1936  CALL dmvch( 'N', lj, 1, alpha, z( jj ), lj, w,
1937  $ 1, one, a( jj, j ), 1, yt, g,
1938  $ aa( ja ), eps, err, fatal, nout,
1939  $ .true. )
1940  IF( full )THEN
1941  IF( upper )THEN
1942  ja = ja + lda
1943  ELSE
1944  ja = ja + lda + 1
1945  END IF
1946  ELSE
1947  ja = ja + lj
1948  END IF
1949  errmax = max( errmax, err )
1950 * If got really bad answer, report and return.
1951  IF( fatal )
1952  $ go to 110
1953  60 CONTINUE
1954  ELSE
1955 * Avoid repeating tests if N.le.0.
1956  IF( n.LE.0 )
1957  $ go to 100
1958  END IF
1959 *
1960  70 CONTINUE
1961 *
1962  80 CONTINUE
1963 *
1964  90 CONTINUE
1965 *
1966  100 CONTINUE
1967 *
1968 * Report result.
1969 *
1970  IF( errmax.LT.thresh )THEN
1971  WRITE( nout, fmt = 9999 )sname, nc
1972  ELSE
1973  WRITE( nout, fmt = 9997 )sname, nc, errmax
1974  END IF
1975  go to 130
1976 *
1977  110 CONTINUE
1978  WRITE( nout, fmt = 9995 )j
1979 *
1980  120 CONTINUE
1981  WRITE( nout, fmt = 9996 )sname
1982  IF( full )THEN
1983  WRITE( nout, fmt = 9993 )nc, sname, uplo, n, alpha, incx, lda
1984  ELSE IF( packed )THEN
1985  WRITE( nout, fmt = 9994 )nc, sname, uplo, n, alpha, incx
1986  END IF
1987 *
1988  130 CONTINUE
1989  RETURN
1990 *
1991  9999 FORMAT( ' ', a6, ' PASSED THE COMPUTATIONAL TESTS (', i6, ' CALL',
1992  $ 'S)' )
1993  9998 FORMAT( ' ******* FATAL ERROR - PARAMETER NUMBER ', i2, ' WAS CH',
1994  $ 'ANGED INCORRECTLY *******' )
1995  9997 FORMAT( ' ', a6, ' COMPLETED THE COMPUTATIONAL TESTS (', i6, ' C',
1996  $ 'ALLS)', /' ******* BUT WITH MAXIMUM TEST RATIO', f8.2,
1997  $ ' - SUSPECT *******' )
1998  9996 FORMAT( ' ******* ', a6, ' FAILED ON CALL NUMBER:' )
1999  9995 FORMAT( ' THESE ARE THE RESULTS FOR COLUMN ', i3 )
2000  9994 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', i3, ',', f4.1, ', X,',
2001  $ i2, ', AP) .' )
2002  9993 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', i3, ',', f4.1, ', X,',
2003  $ i2, ', A,', i3, ') .' )
2004  9992 FORMAT( ' ******* FATAL ERROR - ERROR-EXIT TAKEN ON VALID CALL *',
2005  $ '******' )
2006 *
2007 * End of DCHK5.
2008 *
2009  END
2010  SUBROUTINE dchk6( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
2011  $ fatal, nidim, idim, nalf, alf, ninc, inc, nmax,
2012  $ incmax, a, aa, as, x, xx, xs, y, yy, ys, yt, g,
2013  $ z )
2014 *
2015 * Tests DSYR2 and DSPR2.
2016 *
2017 * Auxiliary routine for test program for Level 2 Blas.
2018 *
2019 * -- Written on 10-August-1987.
2020 * Richard Hanson, Sandia National Labs.
2021 * Jeremy Du Croz, NAG Central Office.
2022 *
2023 * .. Parameters ..
2024  DOUBLE PRECISION zero, half, one
2025  parameter( zero = 0.0d0, half = 0.5d0, one = 1.0d0 )
2026 * .. Scalar Arguments ..
2027  DOUBLE PRECISION eps, thresh
2028  INTEGER incmax, nalf, nidim, ninc, nmax, nout, ntra
2029  LOGICAL fatal, rewi, trace
2030  CHARACTER*6 sname
2031 * .. Array Arguments ..
2032  DOUBLE PRECISION a( nmax, nmax ), aa( nmax*nmax ), alf( nalf ),
2033  $ as( nmax*nmax ), g( nmax ), x( nmax ),
2034  $ xs( nmax*incmax ), xx( nmax*incmax ),
2035  $ y( nmax ), ys( nmax*incmax ), yt( nmax ),
2036  $ yy( nmax*incmax ), z( nmax, 2 )
2037  INTEGER idim( nidim ), inc( ninc )
2038 * .. Local Scalars ..
2039  DOUBLE PRECISION alpha, als, err, errmax, transl
2040  INTEGER i, ia, ic, in, incx, incxs, incy, incys, ix,
2041  $ iy, j, ja, jj, laa, lda, ldas, lj, lx, ly, n,
2042  $ nargs, nc, ns
2043  LOGICAL full, null, packed, reset, same, upper
2044  CHARACTER*1 uplo, uplos
2045  CHARACTER*2 ich
2046 * .. Local Arrays ..
2047  DOUBLE PRECISION w( 2 )
2048  LOGICAL isame( 13 )
2049 * .. External Functions ..
2050  LOGICAL lde, lderes
2051  EXTERNAL lde, lderes
2052 * .. External Subroutines ..
2053  EXTERNAL dmake, dmvch, dspr2, dsyr2
2054 * .. Intrinsic Functions ..
2055  INTRINSIC abs, max
2056 * .. Scalars in Common ..
2057  INTEGER infot, noutc
2058  LOGICAL lerr, ok
2059 * .. Common blocks ..
2060  COMMON /infoc/infot, noutc, ok, lerr
2061 * .. Data statements ..
2062  DATA ich/'UL'/
2063 * .. Executable Statements ..
2064  full = sname( 3: 3 ).EQ.'Y'
2065  packed = sname( 3: 3 ).EQ.'P'
2066 * Define the number of arguments.
2067  IF( full )THEN
2068  nargs = 9
2069  ELSE IF( packed )THEN
2070  nargs = 8
2071  END IF
2072 *
2073  nc = 0
2074  reset = .true.
2075  errmax = zero
2076 *
2077  DO 140 in = 1, nidim
2078  n = idim( in )
2079 * Set LDA to 1 more than minimum value if room.
2080  lda = n
2081  IF( lda.LT.nmax )
2082  $ lda = lda + 1
2083 * Skip tests if not enough room.
2084  IF( lda.GT.nmax )
2085  $ go to 140
2086  IF( packed )THEN
2087  laa = ( n*( n + 1 ) )/2
2088  ELSE
2089  laa = lda*n
2090  END IF
2091 *
2092  DO 130 ic = 1, 2
2093  uplo = ich( ic: ic )
2094  upper = uplo.EQ.'U'
2095 *
2096  DO 120 ix = 1, ninc
2097  incx = inc( ix )
2098  lx = abs( incx )*n
2099 *
2100 * Generate the vector X.
2101 *
2102  transl = half
2103  CALL dmake( 'GE', ' ', ' ', 1, n, x, 1, xx, abs( incx ),
2104  $ 0, n - 1, reset, transl )
2105  IF( n.GT.1 )THEN
2106  x( n/2 ) = zero
2107  xx( 1 + abs( incx )*( n/2 - 1 ) ) = zero
2108  END IF
2109 *
2110  DO 110 iy = 1, ninc
2111  incy = inc( iy )
2112  ly = abs( incy )*n
2113 *
2114 * Generate the vector Y.
2115 *
2116  transl = zero
2117  CALL dmake( 'GE', ' ', ' ', 1, n, y, 1, yy,
2118  $ abs( incy ), 0, n - 1, reset, transl )
2119  IF( n.GT.1 )THEN
2120  y( n/2 ) = zero
2121  yy( 1 + abs( incy )*( n/2 - 1 ) ) = zero
2122  END IF
2123 *
2124  DO 100 ia = 1, nalf
2125  alpha = alf( ia )
2126  null = n.LE.0.OR.alpha.EQ.zero
2127 *
2128 * Generate the matrix A.
2129 *
2130  transl = zero
2131  CALL dmake( sname( 2: 3 ), uplo, ' ', n, n, a,
2132  $ nmax, aa, lda, n - 1, n - 1, reset,
2133  $ transl )
2134 *
2135  nc = nc + 1
2136 *
2137 * Save every datum before calling the subroutine.
2138 *
2139  uplos = uplo
2140  ns = n
2141  als = alpha
2142  DO 10 i = 1, laa
2143  as( i ) = aa( i )
2144  10 CONTINUE
2145  ldas = lda
2146  DO 20 i = 1, lx
2147  xs( i ) = xx( i )
2148  20 CONTINUE
2149  incxs = incx
2150  DO 30 i = 1, ly
2151  ys( i ) = yy( i )
2152  30 CONTINUE
2153  incys = incy
2154 *
2155 * Call the subroutine.
2156 *
2157  IF( full )THEN
2158  IF( trace )
2159  $ WRITE( ntra, fmt = 9993 )nc, sname, uplo, n,
2160  $ alpha, incx, incy, lda
2161  IF( rewi )
2162  $ rewind ntra
2163  CALL dsyr2( uplo, n, alpha, xx, incx, yy, incy,
2164  $ aa, lda )
2165  ELSE IF( packed )THEN
2166  IF( trace )
2167  $ WRITE( ntra, fmt = 9994 )nc, sname, uplo, n,
2168  $ alpha, incx, incy
2169  IF( rewi )
2170  $ rewind ntra
2171  CALL dspr2( uplo, n, alpha, xx, incx, yy, incy,
2172  $ aa )
2173  END IF
2174 *
2175 * Check if error-exit was taken incorrectly.
2176 *
2177  IF( .NOT.ok )THEN
2178  WRITE( nout, fmt = 9992 )
2179  fatal = .true.
2180  go to 160
2181  END IF
2182 *
2183 * See what data changed inside subroutines.
2184 *
2185  isame( 1 ) = uplo.EQ.uplos
2186  isame( 2 ) = ns.EQ.n
2187  isame( 3 ) = als.EQ.alpha
2188  isame( 4 ) = lde( xs, xx, lx )
2189  isame( 5 ) = incxs.EQ.incx
2190  isame( 6 ) = lde( ys, yy, ly )
2191  isame( 7 ) = incys.EQ.incy
2192  IF( null )THEN
2193  isame( 8 ) = lde( as, aa, laa )
2194  ELSE
2195  isame( 8 ) = lderes( sname( 2: 3 ), uplo, n, n,
2196  $ as, aa, lda )
2197  END IF
2198  IF( .NOT.packed )THEN
2199  isame( 9 ) = ldas.EQ.lda
2200  END IF
2201 *
2202 * If data was incorrectly changed, report and return.
2203 *
2204  same = .true.
2205  DO 40 i = 1, nargs
2206  same = same.AND.isame( i )
2207  IF( .NOT.isame( i ) )
2208  $ WRITE( nout, fmt = 9998 )i
2209  40 CONTINUE
2210  IF( .NOT.same )THEN
2211  fatal = .true.
2212  go to 160
2213  END IF
2214 *
2215  IF( .NOT.null )THEN
2216 *
2217 * Check the result column by column.
2218 *
2219  IF( incx.GT.0 )THEN
2220  DO 50 i = 1, n
2221  z( i, 1 ) = x( i )
2222  50 CONTINUE
2223  ELSE
2224  DO 60 i = 1, n
2225  z( i, 1 ) = x( n - i + 1 )
2226  60 CONTINUE
2227  END IF
2228  IF( incy.GT.0 )THEN
2229  DO 70 i = 1, n
2230  z( i, 2 ) = y( i )
2231  70 CONTINUE
2232  ELSE
2233  DO 80 i = 1, n
2234  z( i, 2 ) = y( n - i + 1 )
2235  80 CONTINUE
2236  END IF
2237  ja = 1
2238  DO 90 j = 1, n
2239  w( 1 ) = z( j, 2 )
2240  w( 2 ) = z( j, 1 )
2241  IF( upper )THEN
2242  jj = 1
2243  lj = j
2244  ELSE
2245  jj = j
2246  lj = n - j + 1
2247  END IF
2248  CALL dmvch( 'N', lj, 2, alpha, z( jj, 1 ),
2249  $ nmax, w, 1, one, a( jj, j ), 1,
2250  $ yt, g, aa( ja ), eps, err, fatal,
2251  $ nout, .true. )
2252  IF( full )THEN
2253  IF( upper )THEN
2254  ja = ja + lda
2255  ELSE
2256  ja = ja + lda + 1
2257  END IF
2258  ELSE
2259  ja = ja + lj
2260  END IF
2261  errmax = max( errmax, err )
2262 * If got really bad answer, report and return.
2263  IF( fatal )
2264  $ go to 150
2265  90 CONTINUE
2266  ELSE
2267 * Avoid repeating tests with N.le.0.
2268  IF( n.LE.0 )
2269  $ go to 140
2270  END IF
2271 *
2272  100 CONTINUE
2273 *
2274  110 CONTINUE
2275 *
2276  120 CONTINUE
2277 *
2278  130 CONTINUE
2279 *
2280  140 CONTINUE
2281 *
2282 * Report result.
2283 *
2284  IF( errmax.LT.thresh )THEN
2285  WRITE( nout, fmt = 9999 )sname, nc
2286  ELSE
2287  WRITE( nout, fmt = 9997 )sname, nc, errmax
2288  END IF
2289  go to 170
2290 *
2291  150 CONTINUE
2292  WRITE( nout, fmt = 9995 )j
2293 *
2294  160 CONTINUE
2295  WRITE( nout, fmt = 9996 )sname
2296  IF( full )THEN
2297  WRITE( nout, fmt = 9993 )nc, sname, uplo, n, alpha, incx,
2298  $ incy, lda
2299  ELSE IF( packed )THEN
2300  WRITE( nout, fmt = 9994 )nc, sname, uplo, n, alpha, incx, incy
2301  END IF
2302 *
2303  170 CONTINUE
2304  RETURN
2305 *
2306  9999 FORMAT( ' ', a6, ' PASSED THE COMPUTATIONAL TESTS (', i6, ' CALL',
2307  $ 'S)' )
2308  9998 FORMAT( ' ******* FATAL ERROR - PARAMETER NUMBER ', i2, ' WAS CH',
2309  $ 'ANGED INCORRECTLY *******' )
2310  9997 FORMAT( ' ', a6, ' COMPLETED THE COMPUTATIONAL TESTS (', i6, ' C',
2311  $ 'ALLS)', /' ******* BUT WITH MAXIMUM TEST RATIO', f8.2,
2312  $ ' - SUSPECT *******' )
2313  9996 FORMAT( ' ******* ', a6, ' FAILED ON CALL NUMBER:' )
2314  9995 FORMAT( ' THESE ARE THE RESULTS FOR COLUMN ', i3 )
2315  9994 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', i3, ',', f4.1, ', X,',
2316  $ i2, ', Y,', i2, ', AP) .' )
2317  9993 FORMAT( 1x, i6, ': ', a6, '(''', a1, ''',', i3, ',', f4.1, ', X,',
2318  $ i2, ', Y,', i2, ', A,', i3, ') .' )
2319  9992 FORMAT( ' ******* FATAL ERROR - ERROR-EXIT TAKEN ON VALID CALL *',
2320  $ '******' )
2321 *
2322 * End of DCHK6.
2323 *
2324  END
2325  SUBROUTINE dchke( ISNUM, SRNAMT, NOUT )
2326 *
2327 * Tests the error exits from the Level 2 Blas.
2328 * Requires a special version of the error-handling routine XERBLA.
2329 * ALPHA, BETA, A, X and Y should not need to be defined.
2330 *
2331 * Auxiliary routine for test program for Level 2 Blas.
2332 *
2333 * -- Written on 10-August-1987.
2334 * Richard Hanson, Sandia National Labs.
2335 * Jeremy Du Croz, NAG Central Office.
2336 *
2337 * .. Scalar Arguments ..
2338  INTEGER isnum, nout
2339  CHARACTER*6 srnamt
2340 * .. Scalars in Common ..
2341  INTEGER infot, noutc
2342  LOGICAL lerr, ok
2343 * .. Local Scalars ..
2344  DOUBLE PRECISION alpha, beta
2345 * .. Local Arrays ..
2346  DOUBLE PRECISION a( 1, 1 ), x( 1 ), y( 1 )
2347 * .. External Subroutines ..
2348  EXTERNAL chkxer, dgbmv, dgemv, dger, dsbmv, dspmv, dspr,
2349  $ dspr2, dsymv, dsyr, dsyr2, dtbmv, dtbsv, dtpmv,
2350  $ dtpsv, dtrmv, dtrsv
2351 * .. Common blocks ..
2352  COMMON /infoc/infot, noutc, ok, lerr
2353 * .. Executable Statements ..
2354 * OK is set to .FALSE. by the special version of XERBLA or by CHKXER
2355 * if anything is wrong.
2356  ok = .true.
2357 * LERR is set to .TRUE. by the special version of XERBLA each time
2358 * it is called, and is then tested and re-set by CHKXER.
2359  lerr = .false.
2360  go to( 10, 20, 30, 40, 50, 60, 70, 80,
2361  $ 90, 100, 110, 120, 130, 140, 150,
2362  $ 160 )isnum
2363  10 infot = 1
2364  CALL dgemv( '/', 0, 0, alpha, a, 1, x, 1, beta, y, 1 )
2365  CALL chkxer( srnamt, infot, nout, lerr, ok )
2366  infot = 2
2367  CALL dgemv( 'N', -1, 0, alpha, a, 1, x, 1, beta, y, 1 )
2368  CALL chkxer( srnamt, infot, nout, lerr, ok )
2369  infot = 3
2370  CALL dgemv( 'N', 0, -1, alpha, a, 1, x, 1, beta, y, 1 )
2371  CALL chkxer( srnamt, infot, nout, lerr, ok )
2372  infot = 6
2373  CALL dgemv( 'N', 2, 0, alpha, a, 1, x, 1, beta, y, 1 )
2374  CALL chkxer( srnamt, infot, nout, lerr, ok )
2375  infot = 8
2376  CALL dgemv( 'N', 0, 0, alpha, a, 1, x, 0, beta, y, 1 )
2377  CALL chkxer( srnamt, infot, nout, lerr, ok )
2378  infot = 11
2379  CALL dgemv( 'N', 0, 0, alpha, a, 1, x, 1, beta, y, 0 )
2380  CALL chkxer( srnamt, infot, nout, lerr, ok )
2381  go to 170
2382  20 infot = 1
2383  CALL dgbmv( '/', 0, 0, 0, 0, alpha, a, 1, x, 1, beta, y, 1 )
2384  CALL chkxer( srnamt, infot, nout, lerr, ok )
2385  infot = 2
2386  CALL dgbmv( 'N', -1, 0, 0, 0, alpha, a, 1, x, 1, beta, y, 1 )
2387  CALL chkxer( srnamt, infot, nout, lerr, ok )
2388  infot = 3
2389  CALL dgbmv( 'N', 0, -1, 0, 0, alpha, a, 1, x, 1, beta, y, 1 )
2390  CALL chkxer( srnamt, infot, nout, lerr, ok )
2391  infot = 4
2392  CALL dgbmv( 'N', 0, 0, -1, 0, alpha, a, 1, x, 1, beta, y, 1 )
2393  CALL chkxer( srnamt, infot, nout, lerr, ok )
2394  infot = 5
2395  CALL dgbmv( 'N', 2, 0, 0, -1, alpha, a, 1, x, 1, beta, y, 1 )
2396  CALL chkxer( srnamt, infot, nout, lerr, ok )
2397  infot = 8
2398  CALL dgbmv( 'N', 0, 0, 1, 0, alpha, a, 1, x, 1, beta, y, 1 )
2399  CALL chkxer( srnamt, infot, nout, lerr, ok )
2400  infot = 10
2401  CALL dgbmv( 'N', 0, 0, 0, 0, alpha, a, 1, x, 0, beta, y, 1 )
2402  CALL chkxer( srnamt, infot, nout, lerr, ok )
2403  infot = 13
2404  CALL dgbmv( 'N', 0, 0, 0, 0, alpha, a, 1, x, 1, beta, y, 0 )
2405  CALL chkxer( srnamt, infot, nout, lerr, ok )
2406  go to 170
2407  30 infot = 1
2408  CALL dsymv( '/', 0, alpha, a, 1, x, 1, beta, y, 1 )
2409  CALL chkxer( srnamt, infot, nout, lerr, ok )
2410  infot = 2
2411  CALL dsymv( 'U', -1, alpha, a, 1, x, 1, beta, y, 1 )
2412  CALL chkxer( srnamt, infot, nout, lerr, ok )
2413  infot = 5
2414  CALL dsymv( 'U', 2, alpha, a, 1, x, 1, beta, y, 1 )
2415  CALL chkxer( srnamt, infot, nout, lerr, ok )
2416  infot = 7
2417  CALL dsymv( 'U', 0, alpha, a, 1, x, 0, beta, y, 1 )
2418  CALL chkxer( srnamt, infot, nout, lerr, ok )
2419  infot = 10
2420  CALL dsymv( 'U', 0, alpha, a, 1, x, 1, beta, y, 0 )
2421  CALL chkxer( srnamt, infot, nout, lerr, ok )
2422  go to 170
2423  40 infot = 1
2424  CALL dsbmv( '/', 0, 0, alpha, a, 1, x, 1, beta, y, 1 )
2425  CALL chkxer( srnamt, infot, nout, lerr, ok )
2426  infot = 2
2427  CALL dsbmv( 'U', -1, 0, alpha, a, 1, x, 1, beta, y, 1 )
2428  CALL chkxer( srnamt, infot, nout, lerr, ok )
2429  infot = 3
2430  CALL dsbmv( 'U', 0, -1, alpha, a, 1, x, 1, beta, y, 1 )
2431  CALL chkxer( srnamt, infot, nout, lerr, ok )
2432  infot = 6
2433  CALL dsbmv( 'U', 0, 1, alpha, a, 1, x, 1, beta, y, 1 )
2434  CALL chkxer( srnamt, infot, nout, lerr, ok )
2435  infot = 8
2436  CALL dsbmv( 'U', 0, 0, alpha, a, 1, x, 0, beta, y, 1 )
2437  CALL chkxer( srnamt, infot, nout, lerr, ok )
2438  infot = 11
2439  CALL dsbmv( 'U', 0, 0, alpha, a, 1, x, 1, beta, y, 0 )
2440  CALL chkxer( srnamt, infot, nout, lerr, ok )
2441  go to 170
2442  50 infot = 1
2443  CALL dspmv( '/', 0, alpha, a, x, 1, beta, y, 1 )
2444  CALL chkxer( srnamt, infot, nout, lerr, ok )
2445  infot = 2
2446  CALL dspmv( 'U', -1, alpha, a, x, 1, beta, y, 1 )
2447  CALL chkxer( srnamt, infot, nout, lerr, ok )
2448  infot = 6
2449  CALL dspmv( 'U', 0, alpha, a, x, 0, beta, y, 1 )
2450  CALL chkxer( srnamt, infot, nout, lerr, ok )
2451  infot = 9
2452  CALL dspmv( 'U', 0, alpha, a, x, 1, beta, y, 0 )
2453  CALL chkxer( srnamt, infot, nout, lerr, ok )
2454  go to 170
2455  60 infot = 1
2456  CALL dtrmv( '/', 'N', 'N', 0, a, 1, x, 1 )
2457  CALL chkxer( srnamt, infot, nout, lerr, ok )
2458  infot = 2
2459  CALL dtrmv( 'U', '/', 'N', 0, a, 1, x, 1 )
2460  CALL chkxer( srnamt, infot, nout, lerr, ok )
2461  infot = 3
2462  CALL dtrmv( 'U', 'N', '/', 0, a, 1, x, 1 )
2463  CALL chkxer( srnamt, infot, nout, lerr, ok )
2464  infot = 4
2465  CALL dtrmv( 'U', 'N', 'N', -1, a, 1, x, 1 )
2466  CALL chkxer( srnamt, infot, nout, lerr, ok )
2467  infot = 6
2468  CALL dtrmv( 'U', 'N', 'N', 2, a, 1, x, 1 )
2469  CALL chkxer( srnamt, infot, nout, lerr, ok )
2470  infot = 8
2471  CALL dtrmv( 'U', 'N', 'N', 0, a, 1, x, 0 )
2472  CALL chkxer( srnamt, infot, nout, lerr, ok )
2473  go to 170
2474  70 infot = 1
2475  CALL dtbmv( '/', 'N', 'N', 0, 0, a, 1, x, 1 )
2476  CALL chkxer( srnamt, infot, nout, lerr, ok )
2477  infot = 2
2478  CALL dtbmv( 'U', '/', 'N', 0, 0, a, 1, x, 1 )
2479  CALL chkxer( srnamt, infot, nout, lerr, ok )
2480  infot = 3
2481  CALL dtbmv( 'U', 'N', '/', 0, 0, a, 1, x, 1 )
2482  CALL chkxer( srnamt, infot, nout, lerr, ok )
2483  infot = 4
2484  CALL dtbmv( 'U', 'N', 'N', -1, 0, a, 1, x, 1 )
2485  CALL chkxer( srnamt, infot, nout, lerr, ok )
2486  infot = 5
2487  CALL dtbmv( 'U', 'N', 'N', 0, -1, a, 1, x, 1 )
2488  CALL chkxer( srnamt, infot, nout, lerr, ok )
2489  infot = 7
2490  CALL dtbmv( 'U', 'N', 'N', 0, 1, a, 1, x, 1 )
2491  CALL chkxer( srnamt, infot, nout, lerr, ok )
2492  infot = 9
2493  CALL dtbmv( 'U', 'N', 'N', 0, 0, a, 1, x, 0 )
2494  CALL chkxer( srnamt, infot, nout, lerr, ok )
2495  go to 170
2496  80 infot = 1
2497  CALL dtpmv( '/', 'N', 'N', 0, a, x, 1 )
2498  CALL chkxer( srnamt, infot, nout, lerr, ok )
2499  infot = 2
2500  CALL dtpmv( 'U', '/', 'N', 0, a, x, 1 )
2501  CALL chkxer( srnamt, infot, nout, lerr, ok )
2502  infot = 3
2503  CALL dtpmv( 'U', 'N', '/', 0, a, x, 1 )
2504  CALL chkxer( srnamt, infot, nout, lerr, ok )
2505  infot = 4
2506  CALL dtpmv( 'U', 'N', 'N', -1, a, x, 1 )
2507  CALL chkxer( srnamt, infot, nout, lerr, ok )
2508  infot = 7
2509  CALL dtpmv( 'U', 'N', 'N', 0, a, x, 0 )
2510  CALL chkxer( srnamt, infot, nout, lerr, ok )
2511  go to 170
2512  90 infot = 1
2513  CALL dtrsv( '/', 'N', 'N', 0, a, 1, x, 1 )
2514  CALL chkxer( srnamt, infot, nout, lerr, ok )
2515  infot = 2
2516  CALL dtrsv( 'U', '/', 'N', 0, a, 1, x, 1 )
2517  CALL chkxer( srnamt, infot, nout, lerr, ok )
2518  infot = 3
2519  CALL dtrsv( 'U', 'N', '/', 0, a, 1, x, 1 )
2520  CALL chkxer( srnamt, infot, nout, lerr, ok )
2521  infot = 4
2522  CALL dtrsv( 'U', 'N', 'N', -1, a, 1, x, 1 )
2523  CALL chkxer( srnamt, infot, nout, lerr, ok )
2524  infot = 6
2525  CALL dtrsv( 'U', 'N', 'N', 2, a, 1, x, 1 )
2526  CALL chkxer( srnamt, infot, nout, lerr, ok )
2527  infot = 8
2528  CALL dtrsv( 'U', 'N', 'N', 0, a, 1, x, 0 )
2529  CALL chkxer( srnamt, infot, nout, lerr, ok )
2530  go to 170
2531  100 infot = 1
2532  CALL dtbsv( '/', 'N', 'N', 0, 0, a, 1, x, 1 )
2533  CALL chkxer( srnamt, infot, nout, lerr, ok )
2534  infot = 2
2535  CALL dtbsv( 'U', '/', 'N', 0, 0, a, 1, x, 1 )
2536  CALL chkxer( srnamt, infot, nout, lerr, ok )
2537  infot = 3
2538  CALL dtbsv( 'U', 'N', '/', 0, 0, a, 1, x, 1 )
2539  CALL chkxer( srnamt, infot, nout, lerr, ok )
2540  infot = 4
2541  CALL dtbsv( 'U', 'N', 'N', -1, 0, a, 1, x, 1 )
2542  CALL chkxer( srnamt, infot, nout, lerr, ok )
2543  infot = 5
2544  CALL dtbsv( 'U', 'N', 'N', 0, -1, a, 1, x, 1 )
2545  CALL chkxer( srnamt, infot, nout, lerr, ok )
2546  infot = 7
2547  CALL dtbsv( 'U', 'N', 'N', 0, 1, a, 1, x, 1 )
2548  CALL chkxer( srnamt, infot, nout, lerr, ok )
2549  infot = 9
2550  CALL dtbsv( 'U', 'N', 'N', 0, 0, a, 1, x, 0 )
2551  CALL chkxer( srnamt, infot, nout, lerr, ok )
2552  go to 170
2553  110 infot = 1
2554  CALL dtpsv( '/', 'N', 'N', 0, a, x, 1 )
2555  CALL chkxer( srnamt, infot, nout, lerr, ok )
2556  infot = 2
2557  CALL dtpsv( 'U', '/', 'N', 0, a, x, 1 )
2558  CALL chkxer( srnamt, infot, nout, lerr, ok )
2559  infot = 3
2560  CALL dtpsv( 'U', 'N', '/', 0, a, x, 1 )
2561  CALL chkxer( srnamt, infot, nout, lerr, ok )
2562  infot = 4
2563  CALL dtpsv( 'U', 'N', 'N', -1, a, x, 1 )
2564  CALL chkxer( srnamt, infot, nout, lerr, ok )
2565  infot = 7
2566  CALL dtpsv( 'U', 'N', 'N', 0, a, x, 0 )
2567  CALL chkxer( srnamt, infot, nout, lerr, ok )
2568  go to 170
2569  120 infot = 1
2570  CALL dger( -1, 0, alpha, x, 1, y, 1, a, 1 )
2571  CALL chkxer( srnamt, infot, nout, lerr, ok )
2572  infot = 2
2573  CALL dger( 0, -1, alpha, x, 1, y, 1, a, 1 )
2574  CALL chkxer( srnamt, infot, nout, lerr, ok )
2575  infot = 5
2576  CALL dger( 0, 0, alpha, x, 0, y, 1, a, 1 )
2577  CALL chkxer( srnamt, infot, nout, lerr, ok )
2578  infot = 7
2579  CALL dger( 0, 0, alpha, x, 1, y, 0, a, 1 )
2580  CALL chkxer( srnamt, infot, nout, lerr, ok )
2581  infot = 9
2582  CALL dger( 2, 0, alpha, x, 1, y, 1, a, 1 )
2583  CALL chkxer( srnamt, infot, nout, lerr, ok )
2584  go to 170
2585  130 infot = 1
2586  CALL dsyr( '/', 0, alpha, x, 1, a, 1 )
2587  CALL chkxer( srnamt, infot, nout, lerr, ok )
2588  infot = 2
2589  CALL dsyr( 'U', -1, alpha, x, 1, a, 1 )
2590  CALL chkxer( srnamt, infot, nout, lerr, ok )
2591  infot = 5
2592  CALL dsyr( 'U', 0, alpha, x, 0, a, 1 )
2593  CALL chkxer( srnamt, infot, nout, lerr, ok )
2594  infot = 7
2595  CALL dsyr( 'U', 2, alpha, x, 1, a, 1 )
2596  CALL chkxer( srnamt, infot, nout, lerr, ok )
2597  go to 170
2598  140 infot = 1
2599  CALL dspr( '/', 0, alpha, x, 1, a )
2600  CALL chkxer( srnamt, infot, nout, lerr, ok )
2601  infot = 2
2602  CALL dspr( 'U', -1, alpha, x, 1, a )
2603  CALL chkxer( srnamt, infot, nout, lerr, ok )
2604  infot = 5
2605  CALL dspr( 'U', 0, alpha, x, 0, a )
2606  CALL chkxer( srnamt, infot, nout, lerr, ok )
2607  go to 170
2608  150 infot = 1
2609  CALL dsyr2( '/', 0, alpha, x, 1, y, 1, a, 1 )
2610  CALL chkxer( srnamt, infot, nout, lerr, ok )
2611  infot = 2
2612  CALL dsyr2( 'U', -1, alpha, x, 1, y, 1, a, 1 )
2613  CALL chkxer( srnamt, infot, nout, lerr, ok )
2614  infot = 5
2615  CALL dsyr2( 'U', 0, alpha, x, 0, y, 1, a, 1 )
2616  CALL chkxer( srnamt, infot, nout, lerr, ok )
2617  infot = 7
2618  CALL dsyr2( 'U', 0, alpha, x, 1, y, 0, a, 1 )
2619  CALL chkxer( srnamt, infot, nout, lerr, ok )
2620  infot = 9
2621  CALL dsyr2( 'U', 2, alpha, x, 1, y, 1, a, 1 )
2622  CALL chkxer( srnamt, infot, nout, lerr, ok )
2623  go to 170
2624  160 infot = 1
2625  CALL dspr2( '/', 0, alpha, x, 1, y, 1, a )
2626  CALL chkxer( srnamt, infot, nout, lerr, ok )
2627  infot = 2
2628  CALL dspr2( 'U', -1, alpha, x, 1, y, 1, a )
2629  CALL chkxer( srnamt, infot, nout, lerr, ok )
2630  infot = 5
2631  CALL dspr2( 'U', 0, alpha, x, 0, y, 1, a )
2632  CALL chkxer( srnamt, infot, nout, lerr, ok )
2633  infot = 7
2634  CALL dspr2( 'U', 0, alpha, x, 1, y, 0, a )
2635  CALL chkxer( srnamt, infot, nout, lerr, ok )
2636 *
2637  170 IF( ok )THEN
2638  WRITE( nout, fmt = 9999 )srnamt
2639  ELSE
2640  WRITE( nout, fmt = 9998 )srnamt
2641  END IF
2642  RETURN
2643 *
2644  9999 FORMAT( ' ', a6, ' PASSED THE TESTS OF ERROR-EXITS' )
2645  9998 FORMAT( ' ******* ', a6, ' FAILED THE TESTS OF ERROR-EXITS *****',
2646  $ '**' )
2647 *
2648 * End of DCHKE.
2649 *
2650  END
2651  SUBROUTINE dmake( TYPE, UPLO, DIAG, M, N, A, NMAX, AA, LDA, KL,
2652  $ ku, reset, transl )
2653 *
2654 * Generates values for an M by N matrix A within the bandwidth
2655 * defined by KL and KU.
2656 * Stores the values in the array AA in the data structure required
2657 * by the routine, with unwanted elements set to rogue value.
2658 *
2659 * TYPE is 'GE', 'GB', 'SY', 'SB', 'SP', 'TR', 'TB' OR 'TP'.
2660 *
2661 * Auxiliary routine for test program for Level 2 Blas.
2662 *
2663 * -- Written on 10-August-1987.
2664 * Richard Hanson, Sandia National Labs.
2665 * Jeremy Du Croz, NAG Central Office.
2666 *
2667 * .. Parameters ..
2668  DOUBLE PRECISION zero, one
2669  parameter( zero = 0.0d0, one = 1.0d0 )
2670  DOUBLE PRECISION rogue
2671  parameter( rogue = -1.0d10 )
2672 * .. Scalar Arguments ..
2673  DOUBLE PRECISION transl
2674  INTEGER kl, ku, lda, m, n, nmax
2675  LOGICAL reset
2676  CHARACTER*1 diag, uplo
2677  CHARACTER*2 type
2678 * .. Array Arguments ..
2679  DOUBLE PRECISION a( nmax, * ), aa( * )
2680 * .. Local Scalars ..
2681  INTEGER i, i1, i2, i3, ibeg, iend, ioff, j, kk
2682  LOGICAL gen, lower, sym, tri, unit, upper
2683 * .. External Functions ..
2684  DOUBLE PRECISION dbeg
2685  EXTERNAL dbeg
2686 * .. Intrinsic Functions ..
2687  INTRINSIC max, min
2688 * .. Executable Statements ..
2689  gen = TYPE( 1: 1 ).EQ.'G'
2690  sym = TYPE( 1: 1 ).EQ.'S'
2691  tri = TYPE( 1: 1 ).EQ.'T'
2692  upper = ( sym.OR.tri ).AND.uplo.EQ.'U'
2693  lower = ( sym.OR.tri ).AND.uplo.EQ.'L'
2694  unit = tri.AND.diag.EQ.'U'
2695 *
2696 * Generate data in array A.
2697 *
2698  DO 20 j = 1, n
2699  DO 10 i = 1, m
2700  IF( gen.OR.( upper.AND.i.LE.j ).OR.( lower.AND.i.GE.j ) )
2701  $ THEN
2702  IF( ( i.LE.j.AND.j - i.LE.ku ).OR.
2703  $ ( i.GE.j.AND.i - j.LE.kl ) )THEN
2704  a( i, j ) = dbeg( reset ) + transl
2705  ELSE
2706  a( i, j ) = zero
2707  END IF
2708  IF( i.NE.j )THEN
2709  IF( sym )THEN
2710  a( j, i ) = a( i, j )
2711  ELSE IF( tri )THEN
2712  a( j, i ) = zero
2713  END IF
2714  END IF
2715  END IF
2716  10 CONTINUE
2717  IF( tri )
2718  $ a( j, j ) = a( j, j ) + one
2719  IF( unit )
2720  $ a( j, j ) = one
2721  20 CONTINUE
2722 *
2723 * Store elements in array AS in data structure required by routine.
2724 *
2725  IF( type.EQ.'GE' )THEN
2726  DO 50 j = 1, n
2727  DO 30 i = 1, m
2728  aa( i + ( j - 1 )*lda ) = a( i, j )
2729  30 CONTINUE
2730  DO 40 i = m + 1, lda
2731  aa( i + ( j - 1 )*lda ) = rogue
2732  40 CONTINUE
2733  50 CONTINUE
2734  ELSE IF( type.EQ.'GB' )THEN
2735  DO 90 j = 1, n
2736  DO 60 i1 = 1, ku + 1 - j
2737  aa( i1 + ( j - 1 )*lda ) = rogue
2738  60 CONTINUE
2739  DO 70 i2 = i1, min( kl + ku + 1, ku + 1 + m - j )
2740  aa( i2 + ( j - 1 )*lda ) = a( i2 + j - ku - 1, j )
2741  70 CONTINUE
2742  DO 80 i3 = i2, lda
2743  aa( i3 + ( j - 1 )*lda ) = rogue
2744  80 CONTINUE
2745  90 CONTINUE
2746  ELSE IF( type.EQ.'SY'.OR.type.EQ.'TR' )THEN
2747  DO 130 j = 1, n
2748  IF( upper )THEN
2749  ibeg = 1
2750  IF( unit )THEN
2751  iend = j - 1
2752  ELSE
2753  iend = j
2754  END IF
2755  ELSE
2756  IF( unit )THEN
2757  ibeg = j + 1
2758  ELSE
2759  ibeg = j
2760  END IF
2761  iend = n
2762  END IF
2763  DO 100 i = 1, ibeg - 1
2764  aa( i + ( j - 1 )*lda ) = rogue
2765  100 CONTINUE
2766  DO 110 i = ibeg, iend
2767  aa( i + ( j - 1 )*lda ) = a( i, j )
2768  110 CONTINUE
2769  DO 120 i = iend + 1, lda
2770  aa( i + ( j - 1 )*lda ) = rogue
2771  120 CONTINUE
2772  130 CONTINUE
2773  ELSE IF( type.EQ.'SB'.OR.type.EQ.'TB' )THEN
2774  DO 170 j = 1, n
2775  IF( upper )THEN
2776  kk = kl + 1
2777  ibeg = max( 1, kl + 2 - j )
2778  IF( unit )THEN
2779  iend = kl
2780  ELSE
2781  iend = kl + 1
2782  END IF
2783  ELSE
2784  kk = 1
2785  IF( unit )THEN
2786  ibeg = 2
2787  ELSE
2788  ibeg = 1
2789  END IF
2790  iend = min( kl + 1, 1 + m - j )
2791  END IF
2792  DO 140 i = 1, ibeg - 1
2793  aa( i + ( j - 1 )*lda ) = rogue
2794  140 CONTINUE
2795  DO 150 i = ibeg, iend
2796  aa( i + ( j - 1 )*lda ) = a( i + j - kk, j )
2797  150 CONTINUE
2798  DO 160 i = iend + 1, lda
2799  aa( i + ( j - 1 )*lda ) = rogue
2800  160 CONTINUE
2801  170 CONTINUE
2802  ELSE IF( type.EQ.'SP'.OR.type.EQ.'TP' )THEN
2803  ioff = 0
2804  DO 190 j = 1, n
2805  IF( upper )THEN
2806  ibeg = 1
2807  iend = j
2808  ELSE
2809  ibeg = j
2810  iend = n
2811  END IF
2812  DO 180 i = ibeg, iend
2813  ioff = ioff + 1
2814  aa( ioff ) = a( i, j )
2815  IF( i.EQ.j )THEN
2816  IF( unit )
2817  $ aa( ioff ) = rogue
2818  END IF
2819  180 CONTINUE
2820  190 CONTINUE
2821  END IF
2822  RETURN
2823 *
2824 * End of DMAKE.
2825 *
2826  END
2827  SUBROUTINE dmvch( TRANS, M, N, ALPHA, A, NMAX, X, INCX, BETA, Y,
2828  $ incy, yt, g, yy, eps, err, fatal, nout, mv )
2829 *
2830 * Checks the results of the computational tests.
2831 *
2832 * Auxiliary routine for test program for Level 2 Blas.
2833 *
2834 * -- Written on 10-August-1987.
2835 * Richard Hanson, Sandia National Labs.
2836 * Jeremy Du Croz, NAG Central Office.
2837 *
2838 * .. Parameters ..
2839  DOUBLE PRECISION zero, one
2840  parameter( zero = 0.0d0, one = 1.0d0 )
2841 * .. Scalar Arguments ..
2842  DOUBLE PRECISION alpha, beta, eps, err
2843  INTEGER incx, incy, m, n, nmax, nout
2844  LOGICAL fatal, mv
2845  CHARACTER*1 trans
2846 * .. Array Arguments ..
2847  DOUBLE PRECISION a( nmax, * ), g( * ), x( * ), y( * ), yt( * ),
2848  $ yy( * )
2849 * .. Local Scalars ..
2850  DOUBLE PRECISION erri
2851  INTEGER i, incxl, incyl, iy, j, jx, kx, ky, ml, nl
2852  LOGICAL tran
2853 * .. Intrinsic Functions ..
2854  INTRINSIC abs, max, sqrt
2855 * .. Executable Statements ..
2856  tran = trans.EQ.'T'.OR.trans.EQ.'C'
2857  IF( tran )THEN
2858  ml = n
2859  nl = m
2860  ELSE
2861  ml = m
2862  nl = n
2863  END IF
2864  IF( incx.LT.0 )THEN
2865  kx = nl
2866  incxl = -1
2867  ELSE
2868  kx = 1
2869  incxl = 1
2870  END IF
2871  IF( incy.LT.0 )THEN
2872  ky = ml
2873  incyl = -1
2874  ELSE
2875  ky = 1
2876  incyl = 1
2877  END IF
2878 *
2879 * Compute expected result in YT using data in A, X and Y.
2880 * Compute gauges in G.
2881 *
2882  iy = ky
2883  DO 30 i = 1, ml
2884  yt( iy ) = zero
2885  g( iy ) = zero
2886  jx = kx
2887  IF( tran )THEN
2888  DO 10 j = 1, nl
2889  yt( iy ) = yt( iy ) + a( j, i )*x( jx )
2890  g( iy ) = g( iy ) + abs( a( j, i )*x( jx ) )
2891  jx = jx + incxl
2892  10 CONTINUE
2893  ELSE
2894  DO 20 j = 1, nl
2895  yt( iy ) = yt( iy ) + a( i, j )*x( jx )
2896  g( iy ) = g( iy ) + abs( a( i, j )*x( jx ) )
2897  jx = jx + incxl
2898  20 CONTINUE
2899  END IF
2900  yt( iy ) = alpha*yt( iy ) + beta*y( iy )
2901  g( iy ) = abs( alpha )*g( iy ) + abs( beta*y( iy ) )
2902  iy = iy + incyl
2903  30 CONTINUE
2904 *
2905 * Compute the error ratio for this result.
2906 *
2907  err = zero
2908  DO 40 i = 1, ml
2909  erri = abs( yt( i ) - yy( 1 + ( i - 1 )*abs( incy ) ) )/eps
2910  IF( g( i ).NE.zero )
2911  $ erri = erri/g( i )
2912  err = max( err, erri )
2913  IF( err*sqrt( eps ).GE.one )
2914  $ go to 50
2915  40 CONTINUE
2916 * If the loop completes, all results are at least half accurate.
2917  go to 70
2918 *
2919 * Report fatal error.
2920 *
2921  50 fatal = .true.
2922  WRITE( nout, fmt = 9999 )
2923  DO 60 i = 1, ml
2924  IF( mv )THEN
2925  WRITE( nout, fmt = 9998 )i, yt( i ),
2926  $ yy( 1 + ( i - 1 )*abs( incy ) )
2927  ELSE
2928  WRITE( nout, fmt = 9998 )i,
2929  $ yy( 1 + ( i - 1 )*abs( incy ) ), yt( i )
2930  END IF
2931  60 CONTINUE
2932 *
2933  70 CONTINUE
2934  RETURN
2935 *
2936  9999 FORMAT( ' ******* FATAL ERROR - COMPUTED RESULT IS LESS THAN HAL',
2937  $ 'F ACCURATE *******', /' EXPECTED RESULT COMPU',
2938  $ 'TED RESULT' )
2939  9998 FORMAT( 1x, i7, 2g18.6 )
2940 *
2941 * End of DMVCH.
2942 *
2943  END
2944  LOGICAL FUNCTION lde( RI, RJ, LR )
2945 *
2946 * Tests if two arrays are identical.
2947 *
2948 * Auxiliary routine for test program for Level 2 Blas.
2949 *
2950 * -- Written on 10-August-1987.
2951 * Richard Hanson, Sandia National Labs.
2952 * Jeremy Du Croz, NAG Central Office.
2953 *
2954 * .. Scalar Arguments ..
2955  INTEGER lr
2956 * .. Array Arguments ..
2957  DOUBLE PRECISION ri( * ), rj( * )
2958 * .. Local Scalars ..
2959  INTEGER i
2960 * .. Executable Statements ..
2961  DO 10 i = 1, lr
2962  IF( ri( i ).NE.rj( i ) )
2963  $ go to 20
2964  10 CONTINUE
2965  lde = .true.
2966  go to 30
2967  20 CONTINUE
2968  lde = .false.
2969  30 RETURN
2970 *
2971 * End of LDE.
2972 *
2973  END
2974  LOGICAL FUNCTION lderes( TYPE, UPLO, M, N, AA, AS, LDA )
2975 *
2976 * Tests if selected elements in two arrays are equal.
2977 *
2978 * TYPE is 'GE', 'SY' or 'SP'.
2979 *
2980 * Auxiliary routine for test program for Level 2 Blas.
2981 *
2982 * -- Written on 10-August-1987.
2983 * Richard Hanson, Sandia National Labs.
2984 * Jeremy Du Croz, NAG Central Office.
2985 *
2986 * .. Scalar Arguments ..
2987  INTEGER lda, m, n
2988  CHARACTER*1 uplo
2989  CHARACTER*2 type
2990 * .. Array Arguments ..
2991  DOUBLE PRECISION aa( lda, * ), as( lda, * )
2992 * .. Local Scalars ..
2993  INTEGER i, ibeg, iend, j
2994  LOGICAL upper
2995 * .. Executable Statements ..
2996  upper = uplo.EQ.'U'
2997  IF( type.EQ.'GE' )THEN
2998  DO 20 j = 1, n
2999  DO 10 i = m + 1, lda
3000  IF( aa( i, j ).NE.as( i, j ) )
3001  $ go to 70
3002  10 CONTINUE
3003  20 CONTINUE
3004  ELSE IF( type.EQ.'SY' )THEN
3005  DO 50 j = 1, n
3006  IF( upper )THEN
3007  ibeg = 1
3008  iend = j
3009  ELSE
3010  ibeg = j
3011  iend = n
3012  END IF
3013  DO 30 i = 1, ibeg - 1
3014  IF( aa( i, j ).NE.as( i, j ) )
3015  $ go to 70
3016  30 CONTINUE
3017  DO 40 i = iend + 1, lda
3018  IF( aa( i, j ).NE.as( i, j ) )
3019  $ go to 70
3020  40 CONTINUE
3021  50 CONTINUE
3022  END IF
3023 *
3024  lderes = .true.
3025  go to 80
3026  70 CONTINUE
3027  lderes = .false.
3028  80 RETURN
3029 *
3030 * End of LDERES.
3031 *
3032  END
3033  DOUBLE PRECISION FUNCTION dbeg( RESET )
3034 *
3035 * Generates random numbers uniformly distributed between -0.5 and 0.5.
3036 *
3037 * Auxiliary routine for test program for Level 2 Blas.
3038 *
3039 * -- Written on 10-August-1987.
3040 * Richard Hanson, Sandia National Labs.
3041 * Jeremy Du Croz, NAG Central Office.
3042 *
3043 * .. Scalar Arguments ..
3044  LOGICAL reset
3045 * .. Local Scalars ..
3046  INTEGER i, ic, mi
3047 * .. Save statement ..
3048  SAVE i, ic, mi
3049 * .. Intrinsic Functions ..
3050  INTRINSIC dble
3051 * .. Executable Statements ..
3052  IF( reset )THEN
3053 * Initialize local variables.
3054  mi = 891
3055  i = 7
3056  ic = 0
3057  reset = .false.
3058  END IF
3059 *
3060 * The sequence of values of I is bounded between 1 and 999.
3061 * If initial I = 1,2,3,6,7 or 9, the period will be 50.
3062 * If initial I = 4 or 8, the period will be 25.
3063 * If initial I = 5, the period will be 10.
3064 * IC is used to break up the period by skipping 1 value of I in 6.
3065 *
3066  ic = ic + 1
3067  10 i = i*mi
3068  i = i - 1000*( i/1000 )
3069  IF( ic.GE.5 )THEN
3070  ic = 0
3071  go to 10
3072  END IF
3073  dbeg = dble( i - 500 )/1001.0d0
3074  RETURN
3075 *
3076 * End of DBEG.
3077 *
3078  END
3079  DOUBLE PRECISION FUNCTION ddiff( X, Y )
3080 *
3081 * Auxiliary routine for test program for Level 2 Blas.
3082 *
3083 * -- Written on 10-August-1987.
3084 * Richard Hanson, Sandia National Labs.
3085 *
3086 * .. Scalar Arguments ..
3087  DOUBLE PRECISION x, y
3088 * .. Executable Statements ..
3089  ddiff = x - y
3090  RETURN
3091 *
3092 * End of DDIFF.
3093 *
3094  END
3095  SUBROUTINE chkxer( SRNAMT, INFOT, NOUT, LERR, OK )
3096 *
3097 * Tests whether XERBLA has detected an error when it should.
3098 *
3099 * Auxiliary routine for test program for Level 2 Blas.
3100 *
3101 * -- Written on 10-August-1987.
3102 * Richard Hanson, Sandia National Labs.
3103 * Jeremy Du Croz, NAG Central Office.
3104 *
3105 * .. Scalar Arguments ..
3106  INTEGER infot, nout
3107  LOGICAL lerr, ok
3108  CHARACTER*6 srnamt
3109 * .. Executable Statements ..
3110  IF( .NOT.lerr )THEN
3111  WRITE( nout, fmt = 9999 )infot, srnamt
3112  ok = .false.
3113  END IF
3114  lerr = .false.
3115  RETURN
3116 *
3117  9999 FORMAT( ' ***** ILLEGAL VALUE OF PARAMETER NUMBER ', i2, ' NOT D',
3118  $ 'ETECTED BY ', a6, ' *****' )
3119 *
3120 * End of CHKXER.
3121 *
3122  END
3123  SUBROUTINE xerbla( SRNAME, INFO )
3124 *
3125 * This is a special version of XERBLA to be used only as part of
3126 * the test program for testing error exits from the Level 2 BLAS
3127 * routines.
3128 *
3129 * XERBLA is an error handler for the Level 2 BLAS routines.
3130 *
3131 * It is called by the Level 2 BLAS routines if an input parameter is
3132 * invalid.
3133 *
3134 * Auxiliary routine for test program for Level 2 Blas.
3135 *
3136 * -- Written on 10-August-1987.
3137 * Richard Hanson, Sandia National Labs.
3138 * Jeremy Du Croz, NAG Central Office.
3139 *
3140 * .. Scalar Arguments ..
3141  INTEGER info
3142  CHARACTER*6 srname
3143 * .. Scalars in Common ..
3144  INTEGER infot, nout
3145  LOGICAL lerr, ok
3146  CHARACTER*6 srnamt
3147 * .. Common blocks ..
3148  COMMON /infoc/infot, nout, ok, lerr
3149  COMMON /srnamc/srnamt
3150 * .. Executable Statements ..
3151  lerr = .true.
3152  IF( info.NE.infot )THEN
3153  IF( infot.NE.0 )THEN
3154  WRITE( nout, fmt = 9999 )info, infot
3155  ELSE
3156  WRITE( nout, fmt = 9997 )info
3157  END IF
3158  ok = .false.
3159  END IF
3160  IF( srname.NE.srnamt )THEN
3161  WRITE( nout, fmt = 9998 )srname, srnamt
3162  ok = .false.
3163  END IF
3164  RETURN
3165 *
3166  9999 FORMAT( ' ******* XERBLA WAS CALLED WITH INFO = ', i6, ' INSTEAD',
3167  $ ' OF ', i2, ' *******' )
3168  9998 FORMAT( ' ******* XERBLA WAS CALLED WITH SRNAME = ', a6, ' INSTE',
3169  $ 'AD OF ', a6, ' *******' )
3170  9997 FORMAT( ' ******* XERBLA WAS CALLED WITH INFO = ', i6,
3171  $ ' *******' )
3172 *
3173 * End of XERBLA
3174 *
3175  END
3176