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schkhs.f
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1*> \brief \b SCHKHS
2*
3* =========== DOCUMENTATION ===========
4*
5* Online html documentation available at
6* http://www.netlib.org/lapack/explore-html/
7*
8* Definition:
9* ===========
10*
11* SUBROUTINE SCHKHS( NSIZES, NN, NTYPES, DOTYPE, ISEED, THRESH,
12* NOUNIT, A, LDA, H, T1, T2, U, LDU, Z, UZ, WR1,
13* WI1, WR2, WI2, WR3, WI3, EVECTL, EVECTR, EVECTY,
14* EVECTX, UU, TAU, WORK, NWORK, IWORK, SELECT,
15* RESULT, INFO )
16*
17* .. Scalar Arguments ..
18* INTEGER INFO, LDA, LDU, NOUNIT, NSIZES, NTYPES, NWORK
19* REAL THRESH
20* ..
21* .. Array Arguments ..
22* LOGICAL DOTYPE( * ), SELECT( * )
23* INTEGER ISEED( 4 ), IWORK( * ), NN( * )
24* REAL A( LDA, * ), EVECTL( LDU, * ),
25* $ EVECTR( LDU, * ), EVECTX( LDU, * ),
26* $ EVECTY( LDU, * ), H( LDA, * ), RESULT( 14 ),
27* $ T1( LDA, * ), T2( LDA, * ), TAU( * ),
28* $ U( LDU, * ), UU( LDU, * ), UZ( LDU, * ),
29* $ WI1( * ), WI2( * ), WI3( * ), WORK( * ),
30* $ WR1( * ), WR2( * ), WR3( * ), Z( LDU, * )
31* ..
32*
33*
34*> \par Purpose:
35* =============
36*>
37*> \verbatim
38*>
39*> SCHKHS checks the nonsymmetric eigenvalue problem routines.
40*>
41*> SGEHRD factors A as U H U' , where ' means transpose,
42*> H is hessenberg, and U is an orthogonal matrix.
43*>
44*> SORGHR generates the orthogonal matrix U.
45*>
46*> SORMHR multiplies a matrix by the orthogonal matrix U.
47*>
48*> SHSEQR factors H as Z T Z' , where Z is orthogonal and
49*> T is "quasi-triangular", and the eigenvalue vector W.
50*>
51*> STREVC computes the left and right eigenvector matrices
52*> L and R for T.
53*>
54*> SHSEIN computes the left and right eigenvector matrices
55*> Y and X for H, using inverse iteration.
56*>
57*> When SCHKHS is called, a number of matrix "sizes" ("n's") and a
58*> number of matrix "types" are specified. For each size ("n")
59*> and each type of matrix, one matrix will be generated and used
60*> to test the nonsymmetric eigenroutines. For each matrix, 14
61*> tests will be performed:
62*>
63*> (1) | A - U H U**T | / ( |A| n ulp )
64*>
65*> (2) | I - UU**T | / ( n ulp )
66*>
67*> (3) | H - Z T Z**T | / ( |H| n ulp )
68*>
69*> (4) | I - ZZ**T | / ( n ulp )
70*>
71*> (5) | A - UZ H (UZ)**T | / ( |A| n ulp )
72*>
73*> (6) | I - UZ (UZ)**T | / ( n ulp )
74*>
75*> (7) | T(Z computed) - T(Z not computed) | / ( |T| ulp )
76*>
77*> (8) | W(Z computed) - W(Z not computed) | / ( |W| ulp )
78*>
79*> (9) | TR - RW | / ( |T| |R| ulp )
80*>
81*> (10) | L**H T - W**H L | / ( |T| |L| ulp )
82*>
83*> (11) | HX - XW | / ( |H| |X| ulp )
84*>
85*> (12) | Y**H H - W**H Y | / ( |H| |Y| ulp )
86*>
87*> (13) | AX - XW | / ( |A| |X| ulp )
88*>
89*> (14) | Y**H A - W**H Y | / ( |A| |Y| ulp )
90*>
91*> The "sizes" are specified by an array NN(1:NSIZES); the value of
92*> each element NN(j) specifies one size.
93*> The "types" are specified by a logical array DOTYPE( 1:NTYPES );
94*> if DOTYPE(j) is .TRUE., then matrix type "j" will be generated.
95*> Currently, the list of possible types is:
96*>
97*> (1) The zero matrix.
98*> (2) The identity matrix.
99*> (3) A (transposed) Jordan block, with 1's on the diagonal.
100*>
101*> (4) A diagonal matrix with evenly spaced entries
102*> 1, ..., ULP and random signs.
103*> (ULP = (first number larger than 1) - 1 )
104*> (5) A diagonal matrix with geometrically spaced entries
105*> 1, ..., ULP and random signs.
106*> (6) A diagonal matrix with "clustered" entries 1, ULP, ..., ULP
107*> and random signs.
108*>
109*> (7) Same as (4), but multiplied by SQRT( overflow threshold )
110*> (8) Same as (4), but multiplied by SQRT( underflow threshold )
111*>
112*> (9) A matrix of the form U' T U, where U is orthogonal and
113*> T has evenly spaced entries 1, ..., ULP with random signs
114*> on the diagonal and random O(1) entries in the upper
115*> triangle.
116*>
117*> (10) A matrix of the form U' T U, where U is orthogonal and
118*> T has geometrically spaced entries 1, ..., ULP with random
119*> signs on the diagonal and random O(1) entries in the upper
120*> triangle.
121*>
122*> (11) A matrix of the form U' T U, where U is orthogonal and
123*> T has "clustered" entries 1, ULP,..., ULP with random
124*> signs on the diagonal and random O(1) entries in the upper
125*> triangle.
126*>
127*> (12) A matrix of the form U' T U, where U is orthogonal and
128*> T has real or complex conjugate paired eigenvalues randomly
129*> chosen from ( ULP, 1 ) and random O(1) entries in the upper
130*> triangle.
131*>
132*> (13) A matrix of the form X' T X, where X has condition
133*> SQRT( ULP ) and T has evenly spaced entries 1, ..., ULP
134*> with random signs on the diagonal and random O(1) entries
135*> in the upper triangle.
136*>
137*> (14) A matrix of the form X' T X, where X has condition
138*> SQRT( ULP ) and T has geometrically spaced entries
139*> 1, ..., ULP with random signs on the diagonal and random
140*> O(1) entries in the upper triangle.
141*>
142*> (15) A matrix of the form X' T X, where X has condition
143*> SQRT( ULP ) and T has "clustered" entries 1, ULP,..., ULP
144*> with random signs on the diagonal and random O(1) entries
145*> in the upper triangle.
146*>
147*> (16) A matrix of the form X' T X, where X has condition
148*> SQRT( ULP ) and T has real or complex conjugate paired
149*> eigenvalues randomly chosen from ( ULP, 1 ) and random
150*> O(1) entries in the upper triangle.
151*>
152*> (17) Same as (16), but multiplied by SQRT( overflow threshold )
153*> (18) Same as (16), but multiplied by SQRT( underflow threshold )
154*>
155*> (19) Nonsymmetric matrix with random entries chosen from (-1,1).
156*> (20) Same as (19), but multiplied by SQRT( overflow threshold )
157*> (21) Same as (19), but multiplied by SQRT( underflow threshold )
158*> \endverbatim
159*
160* Arguments:
161* ==========
162*
163*> \verbatim
164*> NSIZES - INTEGER
165*> The number of sizes of matrices to use. If it is zero,
166*> SCHKHS does nothing. It must be at least zero.
167*> Not modified.
168*>
169*> NN - INTEGER array, dimension (NSIZES)
170*> An array containing the sizes to be used for the matrices.
171*> Zero values will be skipped. The values must be at least
172*> zero.
173*> Not modified.
174*>
175*> NTYPES - INTEGER
176*> The number of elements in DOTYPE. If it is zero, SCHKHS
177*> does nothing. It must be at least zero. If it is MAXTYP+1
178*> and NSIZES is 1, then an additional type, MAXTYP+1 is
179*> defined, which is to use whatever matrix is in A. This
180*> is only useful if DOTYPE(1:MAXTYP) is .FALSE. and
181*> DOTYPE(MAXTYP+1) is .TRUE. .
182*> Not modified.
183*>
184*> DOTYPE - LOGICAL array, dimension (NTYPES)
185*> If DOTYPE(j) is .TRUE., then for each size in NN a
186*> matrix of that size and of type j will be generated.
187*> If NTYPES is smaller than the maximum number of types
188*> defined (PARAMETER MAXTYP), then types NTYPES+1 through
189*> MAXTYP will not be generated. If NTYPES is larger
190*> than MAXTYP, DOTYPE(MAXTYP+1) through DOTYPE(NTYPES)
191*> will be ignored.
192*> Not modified.
193*>
194*> ISEED - INTEGER array, dimension (4)
195*> On entry ISEED specifies the seed of the random number
196*> generator. The array elements should be between 0 and 4095;
197*> if not they will be reduced mod 4096. Also, ISEED(4) must
198*> be odd. The random number generator uses a linear
199*> congruential sequence limited to small integers, and so
200*> should produce machine independent random numbers. The
201*> values of ISEED are changed on exit, and can be used in the
202*> next call to SCHKHS to continue the same random number
203*> sequence.
204*> Modified.
205*>
206*> THRESH - REAL
207*> A test will count as "failed" if the "error", computed as
208*> described above, exceeds THRESH. Note that the error
209*> is scaled to be O(1), so THRESH should be a reasonably
210*> small multiple of 1, e.g., 10 or 100. In particular,
211*> it should not depend on the precision (single vs. double)
212*> or the size of the matrix. It must be at least zero.
213*> Not modified.
214*>
215*> NOUNIT - INTEGER
216*> The FORTRAN unit number for printing out error messages
217*> (e.g., if a routine returns IINFO not equal to 0.)
218*> Not modified.
219*>
220*> A - REAL array, dimension (LDA,max(NN))
221*> Used to hold the matrix whose eigenvalues are to be
222*> computed. On exit, A contains the last matrix actually
223*> used.
224*> Modified.
225*>
226*> LDA - INTEGER
227*> The leading dimension of A, H, T1 and T2. It must be at
228*> least 1 and at least max( NN ).
229*> Not modified.
230*>
231*> H - REAL array, dimension (LDA,max(NN))
232*> The upper hessenberg matrix computed by SGEHRD. On exit,
233*> H contains the Hessenberg form of the matrix in A.
234*> Modified.
235*>
236*> T1 - REAL array, dimension (LDA,max(NN))
237*> The Schur (="quasi-triangular") matrix computed by SHSEQR
238*> if Z is computed. On exit, T1 contains the Schur form of
239*> the matrix in A.
240*> Modified.
241*>
242*> T2 - REAL array, dimension (LDA,max(NN))
243*> The Schur matrix computed by SHSEQR when Z is not computed.
244*> This should be identical to T1.
245*> Modified.
246*>
247*> LDU - INTEGER
248*> The leading dimension of U, Z, UZ and UU. It must be at
249*> least 1 and at least max( NN ).
250*> Not modified.
251*>
252*> U - REAL array, dimension (LDU,max(NN))
253*> The orthogonal matrix computed by SGEHRD.
254*> Modified.
255*>
256*> Z - REAL array, dimension (LDU,max(NN))
257*> The orthogonal matrix computed by SHSEQR.
258*> Modified.
259*>
260*> UZ - REAL array, dimension (LDU,max(NN))
261*> The product of U times Z.
262*> Modified.
263*>
264*> WR1 - REAL array, dimension (max(NN))
265*> WI1 - REAL array, dimension (max(NN))
266*> The real and imaginary parts of the eigenvalues of A,
267*> as computed when Z is computed.
268*> On exit, WR1 + WI1*i are the eigenvalues of the matrix in A.
269*> Modified.
270*>
271*> WR2 - REAL array, dimension (max(NN))
272*> WI2 - REAL array, dimension (max(NN))
273*> The real and imaginary parts of the eigenvalues of A,
274*> as computed when T is computed but not Z.
275*> On exit, WR2 + WI2*i are the eigenvalues of the matrix in A.
276*> Modified.
277*>
278*> WR3 - REAL array, dimension (max(NN))
279*> WI3 - REAL array, dimension (max(NN))
280*> Like WR1, WI1, these arrays contain the eigenvalues of A,
281*> but those computed when SHSEQR only computes the
282*> eigenvalues, i.e., not the Schur vectors and no more of the
283*> Schur form than is necessary for computing the
284*> eigenvalues.
285*> Modified.
286*>
287*> EVECTL - REAL array, dimension (LDU,max(NN))
288*> The (upper triangular) left eigenvector matrix for the
289*> matrix in T1. For complex conjugate pairs, the real part
290*> is stored in one row and the imaginary part in the next.
291*> Modified.
292*>
293*> EVECTR - REAL array, dimension (LDU,max(NN))
294*> The (upper triangular) right eigenvector matrix for the
295*> matrix in T1. For complex conjugate pairs, the real part
296*> is stored in one column and the imaginary part in the next.
297*> Modified.
298*>
299*> EVECTY - REAL array, dimension (LDU,max(NN))
300*> The left eigenvector matrix for the
301*> matrix in H. For complex conjugate pairs, the real part
302*> is stored in one row and the imaginary part in the next.
303*> Modified.
304*>
305*> EVECTX - REAL array, dimension (LDU,max(NN))
306*> The right eigenvector matrix for the
307*> matrix in H. For complex conjugate pairs, the real part
308*> is stored in one column and the imaginary part in the next.
309*> Modified.
310*>
311*> UU - REAL array, dimension (LDU,max(NN))
312*> Details of the orthogonal matrix computed by SGEHRD.
313*> Modified.
314*>
315*> TAU - REAL array, dimension(max(NN))
316*> Further details of the orthogonal matrix computed by SGEHRD.
317*> Modified.
318*>
319*> WORK - REAL array, dimension (NWORK)
320*> Workspace.
321*> Modified.
322*>
323*> NWORK - INTEGER
324*> The number of entries in WORK. NWORK >= 4*NN(j)*NN(j) + 2.
325*>
326*> IWORK - INTEGER array, dimension (max(NN))
327*> Workspace.
328*> Modified.
329*>
330*> SELECT - LOGICAL array, dimension (max(NN))
331*> Workspace.
332*> Modified.
333*>
334*> RESULT - REAL array, dimension (14)
335*> The values computed by the fourteen tests described above.
336*> The values are currently limited to 1/ulp, to avoid
337*> overflow.
338*> Modified.
339*>
340*> INFO - INTEGER
341*> If 0, then everything ran OK.
342*> -1: NSIZES < 0
343*> -2: Some NN(j) < 0
344*> -3: NTYPES < 0
345*> -6: THRESH < 0
346*> -9: LDA < 1 or LDA < NMAX, where NMAX is max( NN(j) ).
347*> -14: LDU < 1 or LDU < NMAX.
348*> -28: NWORK too small.
349*> If SLATMR, SLATMS, or SLATME returns an error code, the
350*> absolute value of it is returned.
351*> If 1, then SHSEQR could not find all the shifts.
352*> If 2, then the EISPACK code (for small blocks) failed.
353*> If >2, then 30*N iterations were not enough to find an
354*> eigenvalue or to decompose the problem.
355*> Modified.
356*>
357*>-----------------------------------------------------------------------
358*>
359*> Some Local Variables and Parameters:
360*> ---- ----- --------- --- ----------
361*>
362*> ZERO, ONE Real 0 and 1.
363*> MAXTYP The number of types defined.
364*> MTEST The number of tests defined: care must be taken
365*> that (1) the size of RESULT, (2) the number of
366*> tests actually performed, and (3) MTEST agree.
367*> NTEST The number of tests performed on this matrix
368*> so far. This should be less than MTEST, and
369*> equal to it by the last test. It will be less
370*> if any of the routines being tested indicates
371*> that it could not compute the matrices that
372*> would be tested.
373*> NMAX Largest value in NN.
374*> NMATS The number of matrices generated so far.
375*> NERRS The number of tests which have exceeded THRESH
376*> so far (computed by SLAFTS).
377*> COND, CONDS,
378*> IMODE Values to be passed to the matrix generators.
379*> ANORM Norm of A; passed to matrix generators.
380*>
381*> OVFL, UNFL Overflow and underflow thresholds.
382*> ULP, ULPINV Finest relative precision and its inverse.
383*> RTOVFL, RTUNFL,
384*> RTULP, RTULPI Square roots of the previous 4 values.
385*>
386*> The following four arrays decode JTYPE:
387*> KTYPE(j) The general type (1-10) for type "j".
388*> KMODE(j) The MODE value to be passed to the matrix
389*> generator for type "j".
390*> KMAGN(j) The order of magnitude ( O(1),
391*> O(overflow^(1/2) ), O(underflow^(1/2) )
392*> KCONDS(j) Selects whether CONDS is to be 1 or
393*> 1/sqrt(ulp). (0 means irrelevant.)
394*> \endverbatim
395*
396* Authors:
397* ========
398*
399*> \author Univ. of Tennessee
400*> \author Univ. of California Berkeley
401*> \author Univ. of Colorado Denver
402*> \author NAG Ltd.
403*
404*> \ingroup single_eig
405*
406* =====================================================================
407 SUBROUTINE schkhs( NSIZES, NN, NTYPES, DOTYPE, ISEED, THRESH,
408 $ NOUNIT, A, LDA, H, T1, T2, U, LDU, Z, UZ, WR1,
409 $ WI1, WR2, WI2, WR3, WI3, EVECTL, EVECTR,
410 $ EVECTY, EVECTX, UU, TAU, WORK, NWORK, IWORK,
411 $ SELECT, RESULT, INFO )
412*
413* -- LAPACK test routine --
414* -- LAPACK is a software package provided by Univ. of Tennessee, --
415* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
416*
417* .. Scalar Arguments ..
418 INTEGER INFO, LDA, LDU, NOUNIT, NSIZES, NTYPES, NWORK
419 REAL THRESH
420* ..
421* .. Array Arguments ..
422 LOGICAL DOTYPE( * ), SELECT( * )
423 INTEGER ISEED( 4 ), IWORK( * ), NN( * )
424 REAL A( LDA, * ), EVECTL( LDU, * ),
425 $ EVECTR( LDU, * ), EVECTX( LDU, * ),
426 $ evecty( ldu, * ), h( lda, * ), result( 14 ),
427 $ t1( lda, * ), t2( lda, * ), tau( * ),
428 $ u( ldu, * ), uu( ldu, * ), uz( ldu, * ),
429 $ wi1( * ), wi2( * ), wi3( * ), work( * ),
430 $ wr1( * ), wr2( * ), wr3( * ), z( ldu, * )
431* ..
432*
433* =====================================================================
434*
435* .. Parameters ..
436 REAL ZERO, ONE
437 PARAMETER ( ZERO = 0.0, one = 1.0 )
438 INTEGER MAXTYP
439 PARAMETER ( MAXTYP = 21 )
440* ..
441* .. Local Scalars ..
442 LOGICAL BADNN, MATCH
443 INTEGER I, IHI, IINFO, ILO, IMODE, IN, ITYPE, J, JCOL,
444 $ JJ, JSIZE, JTYPE, K, MTYPES, N, N1, NERRS,
445 $ NMATS, NMAX, NSELC, NSELR, NTEST, NTESTT
446 REAL ANINV, ANORM, COND, CONDS, OVFL, RTOVFL, RTULP,
447 $ rtulpi, rtunfl, temp1, temp2, ulp, ulpinv, unfl
448* ..
449* .. Local Arrays ..
450 CHARACTER ADUMMA( 1 )
451 INTEGER IDUMMA( 1 ), IOLDSD( 4 ), KCONDS( MAXTYP ),
452 $ KMAGN( MAXTYP ), KMODE( MAXTYP ),
453 $ KTYPE( MAXTYP )
454 REAL DUMMA( 6 )
455* ..
456* .. External Functions ..
457 REAL SLAMCH
458 EXTERNAL slamch
459* ..
460* .. External Subroutines ..
461 EXTERNAL scopy, sgehrd, sgemm, sget10, sget22, shsein,
462 $ shseqr, shst01, slabad, slacpy, slafts, slaset,
463 $ slasum, slatme, slatmr, slatms, sorghr, sormhr,
464 $ strevc, xerbla
465* ..
466* .. Intrinsic Functions ..
467 INTRINSIC abs, max, min, real, sqrt
468* ..
469* .. Data statements ..
470 DATA ktype / 1, 2, 3, 5*4, 4*6, 6*6, 3*9 /
471 DATA kmagn / 3*1, 1, 1, 1, 2, 3, 4*1, 1, 1, 1, 1, 2,
472 $ 3, 1, 2, 3 /
473 DATA kmode / 3*0, 4, 3, 1, 4, 4, 4, 3, 1, 5, 4, 3,
474 $ 1, 5, 5, 5, 4, 3, 1 /
475 DATA kconds / 3*0, 5*0, 4*1, 6*2, 3*0 /
476* ..
477* .. Executable Statements ..
478*
479* Check for errors
480*
481 ntestt = 0
482 info = 0
483*
484 badnn = .false.
485 nmax = 0
486 DO 10 j = 1, nsizes
487 nmax = max( nmax, nn( j ) )
488 IF( nn( j ).LT.0 )
489 $ badnn = .true.
490 10 CONTINUE
491*
492* Check for errors
493*
494 IF( nsizes.LT.0 ) THEN
495 info = -1
496 ELSE IF( badnn ) THEN
497 info = -2
498 ELSE IF( ntypes.LT.0 ) THEN
499 info = -3
500 ELSE IF( thresh.LT.zero ) THEN
501 info = -6
502 ELSE IF( lda.LE.1 .OR. lda.LT.nmax ) THEN
503 info = -9
504 ELSE IF( ldu.LE.1 .OR. ldu.LT.nmax ) THEN
505 info = -14
506 ELSE IF( 4*nmax*nmax+2.GT.nwork ) THEN
507 info = -28
508 END IF
509*
510 IF( info.NE.0 ) THEN
511 CALL xerbla( 'SCHKHS', -info )
512 RETURN
513 END IF
514*
515* Quick return if possible
516*
517 IF( nsizes.EQ.0 .OR. ntypes.EQ.0 )
518 $ RETURN
519*
520* More important constants
521*
522 unfl = slamch( 'Safe minimum' )
523 ovfl = slamch( 'Overflow' )
524 CALL slabad( unfl, ovfl )
525 ulp = slamch( 'Epsilon' )*slamch( 'Base' )
526 ulpinv = one / ulp
527 rtunfl = sqrt( unfl )
528 rtovfl = sqrt( ovfl )
529 rtulp = sqrt( ulp )
530 rtulpi = one / rtulp
531*
532* Loop over sizes, types
533*
534 nerrs = 0
535 nmats = 0
536*
537 DO 270 jsize = 1, nsizes
538 n = nn( jsize )
539 IF( n.EQ.0 )
540 $ GO TO 270
541 n1 = max( 1, n )
542 aninv = one / real( n1 )
543*
544 IF( nsizes.NE.1 ) THEN
545 mtypes = min( maxtyp, ntypes )
546 ELSE
547 mtypes = min( maxtyp+1, ntypes )
548 END IF
549*
550 DO 260 jtype = 1, mtypes
551 IF( .NOT.dotype( jtype ) )
552 $ GO TO 260
553 nmats = nmats + 1
554 ntest = 0
555*
556* Save ISEED in case of an error.
557*
558 DO 20 j = 1, 4
559 ioldsd( j ) = iseed( j )
560 20 CONTINUE
561*
562* Initialize RESULT
563*
564 DO 30 j = 1, 14
565 result( j ) = zero
566 30 CONTINUE
567*
568* Compute "A"
569*
570* Control parameters:
571*
572* KMAGN KCONDS KMODE KTYPE
573* =1 O(1) 1 clustered 1 zero
574* =2 large large clustered 2 identity
575* =3 small exponential Jordan
576* =4 arithmetic diagonal, (w/ eigenvalues)
577* =5 random log symmetric, w/ eigenvalues
578* =6 random general, w/ eigenvalues
579* =7 random diagonal
580* =8 random symmetric
581* =9 random general
582* =10 random triangular
583*
584 IF( mtypes.GT.maxtyp )
585 $ GO TO 100
586*
587 itype = ktype( jtype )
588 imode = kmode( jtype )
589*
590* Compute norm
591*
592 GO TO ( 40, 50, 60 )kmagn( jtype )
593*
594 40 CONTINUE
595 anorm = one
596 GO TO 70
597*
598 50 CONTINUE
599 anorm = ( rtovfl*ulp )*aninv
600 GO TO 70
601*
602 60 CONTINUE
603 anorm = rtunfl*n*ulpinv
604 GO TO 70
605*
606 70 CONTINUE
607*
608 CALL slaset( 'Full', lda, n, zero, zero, a, lda )
609 iinfo = 0
610 cond = ulpinv
611*
612* Special Matrices
613*
614 IF( itype.EQ.1 ) THEN
615*
616* Zero
617*
618 iinfo = 0
619*
620 ELSE IF( itype.EQ.2 ) THEN
621*
622* Identity
623*
624 DO 80 jcol = 1, n
625 a( jcol, jcol ) = anorm
626 80 CONTINUE
627*
628 ELSE IF( itype.EQ.3 ) THEN
629*
630* Jordan Block
631*
632 DO 90 jcol = 1, n
633 a( jcol, jcol ) = anorm
634 IF( jcol.GT.1 )
635 $ a( jcol, jcol-1 ) = one
636 90 CONTINUE
637*
638 ELSE IF( itype.EQ.4 ) THEN
639*
640* Diagonal Matrix, [Eigen]values Specified
641*
642 CALL slatms( n, n, 'S', iseed, 'S', work, imode, cond,
643 $ anorm, 0, 0, 'N', a, lda, work( n+1 ),
644 $ iinfo )
645*
646 ELSE IF( itype.EQ.5 ) THEN
647*
648* Symmetric, eigenvalues specified
649*
650 CALL slatms( n, n, 'S', iseed, 'S', work, imode, cond,
651 $ anorm, n, n, 'N', a, lda, work( n+1 ),
652 $ iinfo )
653*
654 ELSE IF( itype.EQ.6 ) THEN
655*
656* General, eigenvalues specified
657*
658 IF( kconds( jtype ).EQ.1 ) THEN
659 conds = one
660 ELSE IF( kconds( jtype ).EQ.2 ) THEN
661 conds = rtulpi
662 ELSE
663 conds = zero
664 END IF
665*
666 adumma( 1 ) = ' '
667 CALL slatme( n, 'S', iseed, work, imode, cond, one,
668 $ adumma, 'T', 'T', 'T', work( n+1 ), 4,
669 $ conds, n, n, anorm, a, lda, work( 2*n+1 ),
670 $ iinfo )
671*
672 ELSE IF( itype.EQ.7 ) THEN
673*
674* Diagonal, random eigenvalues
675*
676 CALL slatmr( n, n, 'S', iseed, 'S', work, 6, one, one,
677 $ 'T', 'N', work( n+1 ), 1, one,
678 $ work( 2*n+1 ), 1, one, 'N', idumma, 0, 0,
679 $ zero, anorm, 'NO', a, lda, iwork, iinfo )
680*
681 ELSE IF( itype.EQ.8 ) THEN
682*
683* Symmetric, random eigenvalues
684*
685 CALL slatmr( n, n, 'S', iseed, 'S', work, 6, one, one,
686 $ 'T', 'N', work( n+1 ), 1, one,
687 $ work( 2*n+1 ), 1, one, 'N', idumma, n, n,
688 $ zero, anorm, 'NO', a, lda, iwork, iinfo )
689*
690 ELSE IF( itype.EQ.9 ) THEN
691*
692* General, random eigenvalues
693*
694 CALL slatmr( n, n, 'S', iseed, 'N', work, 6, one, one,
695 $ 'T', 'N', work( n+1 ), 1, one,
696 $ work( 2*n+1 ), 1, one, 'N', idumma, n, n,
697 $ zero, anorm, 'NO', a, lda, iwork, iinfo )
698*
699 ELSE IF( itype.EQ.10 ) THEN
700*
701* Triangular, random eigenvalues
702*
703 CALL slatmr( n, n, 'S', iseed, 'N', work, 6, one, one,
704 $ 'T', 'N', work( n+1 ), 1, one,
705 $ work( 2*n+1 ), 1, one, 'N', idumma, n, 0,
706 $ zero, anorm, 'no', A, LDA, IWORK, IINFO )
707*
708 ELSE
709*
710 IINFO = 1
711 END IF
712*
713.NE. IF( IINFO0 ) THEN
714 WRITE( NOUNIT, FMT = 9999 )'generator', IINFO, N, JTYPE,
715 $ IOLDSD
716 INFO = ABS( IINFO )
717 RETURN
718 END IF
719*
720 100 CONTINUE
721*
722* Call SGEHRD to compute H and U, do tests.
723*
724 CALL SLACPY( ' ', N, N, A, LDA, H, LDA )
725*
726 NTEST = 1
727*
728 ILO = 1
729 IHI = N
730*
731 CALL SGEHRD( N, ILO, IHI, H, LDA, WORK, WORK( N+1 ),
732 $ NWORK-N, IINFO )
733*
734.NE. IF( IINFO0 ) THEN
735 RESULT( 1 ) = ULPINV
736 WRITE( NOUNIT, FMT = 9999 )'sgehrd', IINFO, N, JTYPE,
737 $ IOLDSD
738 INFO = ABS( IINFO )
739 GO TO 250
740 END IF
741*
742 DO 120 J = 1, N - 1
743 UU( J+1, J ) = ZERO
744 DO 110 I = J + 2, N
745 U( I, J ) = H( I, J )
746 UU( I, J ) = H( I, J )
747 H( I, J ) = ZERO
748 110 CONTINUE
749 120 CONTINUE
750 CALL SCOPY( N-1, WORK, 1, TAU, 1 )
751 CALL SORGHR( N, ILO, IHI, U, LDU, WORK, WORK( N+1 ),
752 $ NWORK-N, IINFO )
753 NTEST = 2
754*
755 CALL SHST01( N, ILO, IHI, A, LDA, H, LDA, U, LDU, WORK,
756 $ NWORK, RESULT( 1 ) )
757*
758* Call SHSEQR to compute T1, T2 and Z, do tests.
759*
760* Eigenvalues only (WR3,WI3)
761*
762 CALL SLACPY( ' ', N, N, H, LDA, T2, LDA )
763 NTEST = 3
764 RESULT( 3 ) = ULPINV
765*
766 CALL SHSEQR( 'e', 'n', N, ILO, IHI, T2, LDA, WR3, WI3, UZ,
767 $ LDU, WORK, NWORK, IINFO )
768.NE. IF( IINFO0 ) THEN
769 WRITE( NOUNIT, FMT = 9999 )'shseqr(e)', IINFO, N, JTYPE,
770 $ IOLDSD
771.LE. IF( IINFON+2 ) THEN
772 INFO = ABS( IINFO )
773 GO TO 250
774 END IF
775 END IF
776*
777* Eigenvalues (WR2,WI2) and Full Schur Form (T2)
778*
779 CALL SLACPY( ' ', N, N, H, LDA, T2, LDA )
780*
781 CALL SHSEQR( 's', 'n', N, ILO, IHI, T2, LDA, WR2, WI2, UZ,
782 $ LDU, WORK, NWORK, IINFO )
783.NE..AND..LE. IF( IINFO0 IINFON+2 ) THEN
784 WRITE( NOUNIT, FMT = 9999 )'shseqr(s)', IINFO, N, JTYPE,
785 $ IOLDSD
786 INFO = ABS( IINFO )
787 GO TO 250
788 END IF
789*
790* Eigenvalues (WR1,WI1), Schur Form (T1), and Schur vectors
791* (UZ)
792*
793 CALL SLACPY( ' ', N, N, H, LDA, T1, LDA )
794 CALL SLACPY( ' ', N, N, U, LDU, UZ, LDU )
795*
796 CALL SHSEQR( 's', 'v', N, ILO, IHI, T1, LDA, WR1, WI1, UZ,
797 $ LDU, WORK, NWORK, IINFO )
798.NE..AND..LE. IF( IINFO0 IINFON+2 ) THEN
799 WRITE( NOUNIT, FMT = 9999 )'shseqr(v)', IINFO, N, JTYPE,
800 $ IOLDSD
801 INFO = ABS( IINFO )
802 GO TO 250
803 END IF
804*
805* Compute Z = U' UZ
806*
807 CALL SGEMM( 't', 'n', N, N, N, ONE, U, LDU, UZ, LDU, ZERO,
808 $ Z, LDU )
809 NTEST = 8
810*
811* Do Tests 3: | H - Z T Z' | / ( |H| n ulp )
812* and 4: | I - Z Z' | / ( n ulp )
813*
814 CALL SHST01( N, ILO, IHI, H, LDA, T1, LDA, Z, LDU, WORK,
815 $ NWORK, RESULT( 3 ) )
816*
817* Do Tests 5: | A - UZ T (UZ)' | / ( |A| n ulp )
818* and 6: | I - UZ (UZ)' | / ( n ulp )
819*
820 CALL SHST01( N, ILO, IHI, A, LDA, T1, LDA, UZ, LDU, WORK,
821 $ NWORK, RESULT( 5 ) )
822*
823* Do Test 7: | T2 - T1 | / ( |T| n ulp )
824*
825 CALL SGET10( N, N, T2, LDA, T1, LDA, WORK, RESULT( 7 ) )
826*
827* Do Test 8: | W2 - W1 | / ( max(|W1|,|W2|) ulp )
828*
829 TEMP1 = ZERO
830 TEMP2 = ZERO
831 DO 130 J = 1, N
832 TEMP1 = MAX( TEMP1, ABS( WR1( J ) )+ABS( WI1( J ) ),
833 $ ABS( WR2( J ) )+ABS( WI2( J ) ) )
834 TEMP2 = MAX( TEMP2, ABS( WR1( J )-WR2( J ) )+
835 $ ABS( WI1( J )-WI2( J ) ) )
836 130 CONTINUE
837*
838 RESULT( 8 ) = TEMP2 / MAX( UNFL, ULP*MAX( TEMP1, TEMP2 ) )
839*
840* Compute the Left and Right Eigenvectors of T
841*
842* Compute the Right eigenvector Matrix:
843*
844 NTEST = 9
845 RESULT( 9 ) = ULPINV
846*
847* Select last max(N/4,1) real, max(N/4,1) complex eigenvectors
848*
849 NSELC = 0
850 NSELR = 0
851 J = N
852 140 CONTINUE
853.EQ. IF( WI1( J )ZERO ) THEN
854.LT. IF( NSELRMAX( N / 4, 1 ) ) THEN
855 NSELR = NSELR + 1
856 SELECT( J ) = .TRUE.
857 ELSE
858 SELECT( J ) = .FALSE.
859 END IF
860 J = J - 1
861 ELSE
862.LT. IF( NSELCMAX( N / 4, 1 ) ) THEN
863 NSELC = NSELC + 1
864 SELECT( J ) = .TRUE.
865 SELECT( J-1 ) = .FALSE.
866 ELSE
867 SELECT( J ) = .FALSE.
868 SELECT( J-1 ) = .FALSE.
869 END IF
870 J = J - 2
871 END IF
872.GT. IF( J0 )
873 $ GO TO 140
874*
875 CALL STREVC( 'right', 'all', SELECT, N, T1, LDA, DUMMA, LDU,
876 $ EVECTR, LDU, N, IN, WORK, IINFO )
877.NE. IF( IINFO0 ) THEN
878 WRITE( NOUNIT, FMT = 9999 )'strevc(r,a)', IINFO, N,
879 $ JTYPE, IOLDSD
880 INFO = ABS( IINFO )
881 GO TO 250
882 END IF
883*
884* Test 9: | TR - RW | / ( |T| |R| ulp )
885*
886 CALL SGET22( 'n', 'n', 'n', N, T1, LDA, EVECTR, LDU, WR1,
887 $ WI1, WORK, DUMMA( 1 ) )
888 RESULT( 9 ) = DUMMA( 1 )
889.GT. IF( DUMMA( 2 )THRESH ) THEN
890 WRITE( NOUNIT, FMT = 9998 )'right', 'strevc',
891 $ DUMMA( 2 ), N, JTYPE, IOLDSD
892 END IF
893*
894* Compute selected right eigenvectors and confirm that
895* they agree with previous right eigenvectors
896*
897 CALL STREVC( 'right', 'some', SELECT, N, T1, LDA, DUMMA,
898 $ LDU, EVECTL, LDU, N, IN, WORK, IINFO )
899.NE. IF( IINFO0 ) THEN
900 WRITE( NOUNIT, FMT = 9999 )'strevc(r,s)', IINFO, N,
901 $ JTYPE, IOLDSD
902 INFO = ABS( IINFO )
903 GO TO 250
904 END IF
905*
906 K = 1
907 MATCH = .TRUE.
908 DO 170 J = 1, N
909.AND..EQ. IF( SELECT( J ) WI1( J )ZERO ) THEN
910 DO 150 JJ = 1, N
911.NE. IF( EVECTR( JJ, J )EVECTL( JJ, K ) ) THEN
912 MATCH = .FALSE.
913 GO TO 180
914 END IF
915 150 CONTINUE
916 K = K + 1
917.AND..NE. ELSE IF( SELECT( J ) WI1( J )ZERO ) THEN
918 DO 160 JJ = 1, N
919.NE..OR. IF( EVECTR( JJ, J )EVECTL( JJ, K )
920.NE. $ EVECTR( JJ, J+1 )EVECTL( JJ, K+1 ) ) THEN
921 MATCH = .FALSE.
922 GO TO 180
923 END IF
924 160 CONTINUE
925 K = K + 2
926 END IF
927 170 CONTINUE
928 180 CONTINUE
929.NOT. IF( MATCH )
930 $ WRITE( NOUNIT, FMT = 9997 )'right', 'strevc', N, JTYPE,
931 $ IOLDSD
932*
933* Compute the Left eigenvector Matrix:
934*
935 NTEST = 10
936 RESULT( 10 ) = ULPINV
937 CALL STREVC( 'left', 'all', SELECT, N, T1, LDA, EVECTL, LDU,
938 $ DUMMA, LDU, N, IN, WORK, IINFO )
939.NE. IF( IINFO0 ) THEN
940 WRITE( NOUNIT, FMT = 9999 )'strevc(l,a)', IINFO, N,
941 $ JTYPE, IOLDSD
942 INFO = ABS( IINFO )
943 GO TO 250
944 END IF
945*
946* Test 10: | LT - WL | / ( |T| |L| ulp )
947*
948 CALL SGET22( 'trans', 'n', 'conj', N, T1, LDA, EVECTL, LDU,
949 $ WR1, WI1, WORK, DUMMA( 3 ) )
950 RESULT( 10 ) = DUMMA( 3 )
951.GT. IF( DUMMA( 4 )THRESH ) THEN
952 WRITE( NOUNIT, FMT = 9998 )'left', 'strevc', DUMMA( 4 ),
953 $ N, JTYPE, IOLDSD
954 END IF
955*
956* Compute selected left eigenvectors and confirm that
957* they agree with previous left eigenvectors
958*
959 CALL STREVC( 'left', 'some', SELECT, N, T1, LDA, EVECTR,
960 $ LDU, DUMMA, LDU, N, IN, WORK, IINFO )
961.NE. IF( IINFO0 ) THEN
962 WRITE( NOUNIT, FMT = 9999 )'strevc(l,s)', IINFO, N,
963 $ JTYPE, IOLDSD
964 INFO = ABS( IINFO )
965 GO TO 250
966 END IF
967*
968 K = 1
969 MATCH = .TRUE.
970 DO 210 J = 1, N
971.AND..EQ. IF( SELECT( J ) WI1( J )ZERO ) THEN
972 DO 190 JJ = 1, N
973.NE. IF( EVECTL( JJ, J )EVECTR( JJ, K ) ) THEN
974 MATCH = .FALSE.
975 GO TO 220
976 END IF
977 190 CONTINUE
978 K = K + 1
979.AND..NE. ELSE IF( SELECT( J ) WI1( J )ZERO ) THEN
980 DO 200 JJ = 1, N
981.NE..OR. IF( EVECTL( JJ, J )EVECTR( JJ, K )
982.NE. $ EVECTL( JJ, J+1 )EVECTR( JJ, K+1 ) ) THEN
983 MATCH = .FALSE.
984 GO TO 220
985 END IF
986 200 CONTINUE
987 K = K + 2
988 END IF
989 210 CONTINUE
990 220 CONTINUE
991.NOT. IF( MATCH )
992 $ WRITE( NOUNIT, FMT = 9997 )'left', 'strevc', N, JTYPE,
993 $ IOLDSD
994*
995* Call SHSEIN for Right eigenvectors of H, do test 11
996*
997 NTEST = 11
998 RESULT( 11 ) = ULPINV
999 DO 230 J = 1, N
1000 SELECT( J ) = .TRUE.
1001 230 CONTINUE
1002*
1003 CALL SHSEIN( 'right', 'qr', 'ninitv', SELECT, N, H, LDA,
1004 $ WR3, WI3, DUMMA, LDU, EVECTX, LDU, N1, IN,
1005 $ WORK, IWORK, IWORK, IINFO )
1006.NE. IF( IINFO0 ) THEN
1007 WRITE( NOUNIT, FMT = 9999 )'shsein(r)', IINFO, N, JTYPE,
1008 $ IOLDSD
1009 INFO = ABS( IINFO )
1010.LT. IF( IINFO0 )
1011 $ GO TO 250
1012 ELSE
1013*
1014* Test 11: | HX - XW | / ( |H| |X| ulp )
1015*
1016* (from inverse iteration)
1017*
1018 CALL SGET22( 'n', 'n', 'n', N, H, LDA, EVECTX, LDU, WR3,
1019 $ WI3, WORK, DUMMA( 1 ) )
1020.LT. IF( DUMMA( 1 )ULPINV )
1021 $ RESULT( 11 ) = DUMMA( 1 )*ANINV
1022.GT. IF( DUMMA( 2 )THRESH ) THEN
1023 WRITE( NOUNIT, FMT = 9998 )'right', 'shsein',
1024 $ DUMMA( 2 ), N, JTYPE, IOLDSD
1025 END IF
1026 END IF
1027*
1028* Call SHSEIN for Left eigenvectors of H, do test 12
1029*
1030 NTEST = 12
1031 RESULT( 12 ) = ULPINV
1032 DO 240 J = 1, N
1033 SELECT( J ) = .TRUE.
1034 240 CONTINUE
1035*
1036 CALL SHSEIN( 'left', 'qr', 'Ninitv', SELECT, n, h, lda, wr3,
1037 $ wi3, evecty, ldu, dumma, ldu, n1, in, work,
1038 $ iwork, iwork, iinfo )
1039 IF( iinfo.NE.0 ) THEN
1040 WRITE( nounit, fmt = 9999 )'SHSEIN(L)', iinfo, n, jtype,
1041 $ ioldsd
1042 info = abs( iinfo )
1043 IF( iinfo.LT.0 )
1044 $ GO TO 250
1045 ELSE
1046*
1047* Test 12: | YH - WY | / ( |H| |Y| ulp )
1048*
1049* (from inverse iteration)
1050*
1051 CALL sget22( 'C', 'N', 'C', n, h, lda, evecty, ldu, wr3,
1052 $ wi3, work, dumma( 3 ) )
1053 IF( dumma( 3 ).LT.ulpinv )
1054 $ result( 12 ) = dumma( 3 )*aninv
1055 IF( dumma( 4 ).GT.thresh ) THEN
1056 WRITE( nounit, fmt = 9998 )'Left', 'SHSEIN',
1057 $ dumma( 4 ), n, jtype, ioldsd
1058 END IF
1059 END IF
1060*
1061* Call SORMHR for Right eigenvectors of A, do test 13
1062*
1063 ntest = 13
1064 result( 13 ) = ulpinv
1065*
1066 CALL sormhr( 'Left', 'No transpose', n, n, ilo, ihi, uu,
1067 $ ldu, tau, evectx, ldu, work, nwork, iinfo )
1068 IF( iinfo.NE.0 ) THEN
1069 WRITE( nounit, fmt = 9999 )'sormhr(r)', IINFO, N, JTYPE,
1070 $ IOLDSD
1071 INFO = ABS( IINFO )
1072.LT. IF( IINFO0 )
1073 $ GO TO 250
1074 ELSE
1075*
1076* Test 13: | AX - XW | / ( |A| |X| ulp )
1077*
1078* (from inverse iteration)
1079*
1080 CALL SGET22( 'n', 'n', 'n', N, A, LDA, EVECTX, LDU, WR3,
1081 $ WI3, WORK, DUMMA( 1 ) )
1082.LT. IF( DUMMA( 1 )ULPINV )
1083 $ RESULT( 13 ) = DUMMA( 1 )*ANINV
1084 END IF
1085*
1086* Call SORMHR for Left eigenvectors of A, do test 14
1087*
1088 NTEST = 14
1089 RESULT( 14 ) = ULPINV
1090*
1091 CALL SORMHR( 'left', 'no transpose', N, N, ILO, IHI, UU,
1092 $ LDU, TAU, EVECTY, LDU, WORK, NWORK, IINFO )
1093.NE. IF( IINFO0 ) THEN
1094 WRITE( NOUNIT, FMT = 9999 )'sormhr(l)', IINFO, N, JTYPE,
1095 $ IOLDSD
1096 INFO = ABS( IINFO )
1097.LT. IF( IINFO0 )
1098 $ GO TO 250
1099 ELSE
1100*
1101* Test 14: | YA - WY | / ( |A| |Y| ulp )
1102*
1103* (from inverse iteration)
1104*
1105 CALL SGET22( 'c', 'n', 'c', N, A, LDA, EVECTY, LDU, WR3,
1106 $ WI3, WORK, DUMMA( 3 ) )
1107.LT. IF( DUMMA( 3 )ULPINV )
1108 $ RESULT( 14 ) = DUMMA( 3 )*ANINV
1109 END IF
1110*
1111* End of Loop -- Check for RESULT(j) > THRESH
1112*
1113 250 CONTINUE
1114*
1115 NTESTT = NTESTT + NTEST
1116 CALL SLAFTS( 'shs', N, N, JTYPE, NTEST, RESULT, IOLDSD,
1117 $ THRESH, NOUNIT, NERRS )
1118*
1119 260 CONTINUE
1120 270 CONTINUE
1121*
1122* Summary
1123*
1124 CALL SLASUM( 'shs', NOUNIT, NERRS, NTESTT )
1125*
1126 RETURN
1127*
1128 9999 FORMAT( ' schkhs: ', A, ' returned info=', I6, '.', / 9X, 'n=',
1129 $ I6, ', jtype=', I6, ', iseed=(', 3( I5, ',' ), I5, ')' )
1130 9998 FORMAT( ' schkhs: ', A, ' eigenvectors from ', A, ' incorrectly ',
1131 $ 'normalized.', / ' bits of error=', 0P, G10.3, ',', 9X,
1132 $ 'n=', I6, ', jtype=', I6, ', iseed=(', 3( I5, ',' ), I5,
1133 $ ')' )
1134 9997 FORMAT( ' schkhs: selected ', A, ' eigenvectors from ', A,
1135 $ ' do not match other eigenvectors ', 9X, 'n=', i6,
1136 $ ', JTYPE=', i6, ', ISEED=(', 3( i5, ',' ), i5, ')' )
1137*
1138* End of SCHKHS
1139*
1140 END
slabad
subroutine slabad(small, large)
SLABAD
Definition slabad.f:74
slaset
subroutine slaset(uplo, m, n, alpha, beta, a, lda)
SLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.
Definition slaset.f:110
slacpy
subroutine slacpy(uplo, m, n, a, lda, b, ldb)
SLACPY copies all or part of one two-dimensional array to another.
Definition slacpy.f:103
xerbla
subroutine xerbla(srname, info)
XERBLA
Definition xerbla.f:60
sgehrd
subroutine sgehrd(n, ilo, ihi, a, lda, tau, work, lwork, info)
SGEHRD
Definition sgehrd.f:167
shseqr
subroutine shseqr(job, compz, n, ilo, ihi, h, ldh, wr, wi, z, ldz, work, lwork, info)
SHSEQR
Definition shseqr.f:316
sormhr
subroutine sormhr(side, trans, m, n, ilo, ihi, a, lda, tau, c, ldc, work, lwork, info)
SORMHR
Definition sormhr.f:179
sorghr
subroutine sorghr(n, ilo, ihi, a, lda, tau, work, lwork, info)
SORGHR
Definition sorghr.f:126
strevc
subroutine strevc(side, howmny, select, n, t, ldt, vl, ldvl, vr, ldvr, mm, m, work, info)
STREVC
Definition strevc.f:222
shsein
subroutine shsein(side, eigsrc, initv, select, n, h, ldh, wr, wi, vl, ldvl, vr, ldvr, mm, m, work, ifaill, ifailr, info)
SHSEIN
Definition shsein.f:263
slatmr
subroutine slatmr(m, n, dist, iseed, sym, d, mode, cond, dmax, rsign, grade, dl, model, condl, dr, moder, condr, pivtng, ipivot, kl, ku, sparse, anorm, pack, a, lda, iwork, info)
SLATMR
Definition slatmr.f:471
slatme
subroutine slatme(n, dist, iseed, d, mode, cond, dmax, ei, rsign, upper, sim, ds, modes, conds, kl, ku, anorm, a, lda, work, info)
SLATME
Definition slatme.f:332
slatms
subroutine slatms(m, n, dist, iseed, sym, d, mode, cond, dmax, kl, ku, pack, a, lda, work, info)
SLATMS
Definition slatms.f:321
scopy
subroutine scopy(n, sx, incx, sy, incy)
SCOPY
Definition scopy.f:82
sgemm
subroutine sgemm(transa, transb, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc)
SGEMM
Definition sgemm.f:187
schkhs
subroutine schkhs(nsizes, nn, ntypes, dotype, iseed, thresh, nounit, a, lda, h, t1, t2, u, ldu, z, uz, wr1, wi1, wr2, wi2, wr3, wi3, evectl, evectr, evecty, evectx, uu, tau, work, nwork, iwork, select, result, info)
SCHKHS
Definition schkhs.f:412
sget22
subroutine sget22(transa, transe, transw, n, a, lda, e, lde, wr, wi, work, result)
SGET22
Definition sget22.f:168
sget10
subroutine sget10(m, n, a, lda, b, ldb, work, result)
SGET10
Definition sget10.f:93
shst01
subroutine shst01(n, ilo, ihi, a, lda, h, ldh, q, ldq, work, lwork, result)
SHST01
Definition shst01.f:134
slafts
subroutine slafts(type, m, n, imat, ntests, result, iseed, thresh, iounit, ie)
SLAFTS
Definition slafts.f:99
min
#define min(a, b)
Definition macros.h:20
max
#define max(a, b)
Definition macros.h:21
slasum
subroutine slasum(type, iounit, ie, nrun)
SLASUM
Definition slasum.f:41