LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ sckglm()

subroutine sckglm ( integer  NN,
integer, dimension( * )  MVAL,
integer, dimension( * )  PVAL,
integer, dimension( * )  NVAL,
integer  NMATS,
integer, dimension( 4 )  ISEED,
real  THRESH,
integer  NMAX,
real, dimension( * )  A,
real, dimension( * )  AF,
real, dimension( * )  B,
real, dimension( * )  BF,
real, dimension( * )  X,
real, dimension( * )  WORK,
real, dimension( * )  RWORK,
integer  NIN,
integer  NOUT,
integer  INFO 
)

SCKGLM

Purpose:
 SCKGLM tests SGGGLM - subroutine for solving generalized linear
                       model problem.
Parameters
[in]NN
          NN is INTEGER
          The number of values of N, M and P contained in the vectors
          NVAL, MVAL and PVAL.
[in]MVAL
          MVAL is INTEGER array, dimension (NN)
          The values of the matrix column dimension M.
[in]PVAL
          PVAL is INTEGER array, dimension (NN)
          The values of the matrix column dimension P.
[in]NVAL
          NVAL is INTEGER array, dimension (NN)
          The values of the matrix row dimension N.
[in]NMATS
          NMATS is INTEGER
          The number of matrix types to be tested for each combination
          of matrix dimensions.  If NMATS >= NTYPES (the maximum
          number of matrix types), then all the different types are
          generated for testing.  If NMATS < NTYPES, another input line
          is read to get the numbers of the matrix types to be used.
[in,out]ISEED
          ISEED is INTEGER array, dimension (4)
          On entry, the seed of the random number generator.  The array
          elements should be between 0 and 4095, otherwise they will be
          reduced mod 4096, and ISEED(4) must be odd.
          On exit, the next seed in the random number sequence after
          all the test matrices have been generated.
[in]THRESH
          THRESH is REAL
          The threshold value for the test ratios.  A result is
          included in the output file if RESID >= THRESH.  To have
          every test ratio printed, use THRESH = 0.
[in]NMAX
          NMAX is INTEGER
          The maximum value permitted for M or N, used in dimensioning
          the work arrays.
[out]A
          A is REAL array, dimension (NMAX*NMAX)
[out]AF
          AF is REAL array, dimension (NMAX*NMAX)
[out]B
          B is REAL array, dimension (NMAX*NMAX)
[out]BF
          BF is REAL array, dimension (NMAX*NMAX)
[out]X
          X is REAL array, dimension (4*NMAX)
[out]RWORK
          RWORK is REAL array, dimension (NMAX)
[out]WORK
          WORK is REAL array, dimension (NMAX*NMAX)
[in]NIN
          NIN is INTEGER
          The unit number for input.
[in]NOUT
          NOUT is INTEGER
          The unit number for output.
[out]INFO
          INFO is INTEGER
          = 0 :  successful exit
          > 0 :  If SLATMS returns an error code, the absolute value
                 of it is returned.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.

Definition at line 164 of file sckglm.f.

167 *
168 * -- LAPACK test routine --
169 * -- LAPACK is a software package provided by Univ. of Tennessee, --
170 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
171 *
172 * .. Scalar Arguments ..
173  INTEGER INFO, NIN, NMATS, NMAX, NN, NOUT
174  REAL THRESH
175 * ..
176 * .. Array Arguments ..
177  INTEGER ISEED( 4 ), MVAL( * ), NVAL( * ), PVAL( * )
178  REAL A( * ), AF( * ), B( * ), BF( * ), RWORK( * ),
179  $ WORK( * ), X( * )
180 * ..
181 *
182 * =====================================================================
183 *
184 * .. Parameters ..
185  INTEGER NTYPES
186  parameter( ntypes = 8 )
187 * ..
188 * .. Local Scalars ..
189  LOGICAL FIRSTT
190  CHARACTER DISTA, DISTB, TYPE
191  CHARACTER*3 PATH
192  INTEGER I, IINFO, IK, IMAT, KLA, KLB, KUA, KUB, LDA,
193  $ LDB, LWORK, M, MODEA, MODEB, N, NFAIL, NRUN, P
194  REAL ANORM, BNORM, CNDNMA, CNDNMB, RESID
195 * ..
196 * .. Local Arrays ..
197  LOGICAL DOTYPE( NTYPES )
198 * ..
199 * .. External Functions ..
200  REAL SLARND
201  EXTERNAL slarnd
202 * ..
203 * .. External Subroutines ..
204  EXTERNAL alahdg, alareq, alasum, sglmts, slatb9, slatms
205 * ..
206 * .. Intrinsic Functions ..
207  INTRINSIC abs
208 * ..
209 * .. Executable Statements ..
210 *
211 * Initialize constants.
212 *
213  path( 1: 3 ) = 'GLM'
214  info = 0
215  nrun = 0
216  nfail = 0
217  firstt = .true.
218  CALL alareq( path, nmats, dotype, ntypes, nin, nout )
219  lda = nmax
220  ldb = nmax
221  lwork = nmax*nmax
222 *
223 * Check for valid input values.
224 *
225  DO 10 ik = 1, nn
226  m = mval( ik )
227  p = pval( ik )
228  n = nval( ik )
229  IF( m.GT.n .OR. n.GT.m+p ) THEN
230  IF( firstt ) THEN
231  WRITE( nout, fmt = * )
232  firstt = .false.
233  END IF
234  WRITE( nout, fmt = 9997 )m, p, n
235  END IF
236  10 CONTINUE
237  firstt = .true.
238 *
239 * Do for each value of M in MVAL.
240 *
241  DO 40 ik = 1, nn
242  m = mval( ik )
243  p = pval( ik )
244  n = nval( ik )
245  IF( m.GT.n .OR. n.GT.m+p )
246  $ GO TO 40
247 *
248  DO 30 imat = 1, ntypes
249 *
250 * Do the tests only if DOTYPE( IMAT ) is true.
251 *
252  IF( .NOT.dotype( imat ) )
253  $ GO TO 30
254 *
255 * Set up parameters with SLATB9 and generate test
256 * matrices A and B with SLATMS.
257 *
258  CALL slatb9( path, imat, m, p, n, TYPE, KLA, KUA, KLB, KUB,
259  $ ANORM, BNORM, MODEA, MODEB, CNDNMA, CNDNMB,
260  $ DISTA, DISTB )
261 *
262  CALL slatms( n, m, dista, iseed, TYPE, RWORK, MODEA, CNDNMA,
263  $ ANORM, KLA, KUA, 'No packing', A, LDA, WORK,
264  $ IINFO )
265  IF( iinfo.NE.0 ) THEN
266  WRITE( nout, fmt = 9999 )iinfo
267  info = abs( iinfo )
268  GO TO 30
269  END IF
270 *
271  CALL slatms( n, p, distb, iseed, TYPE, RWORK, MODEB, CNDNMB,
272  $ BNORM, KLB, KUB, 'No packing', B, LDB, WORK,
273  $ IINFO )
274  IF( iinfo.NE.0 ) THEN
275  WRITE( nout, fmt = 9999 )iinfo
276  info = abs( iinfo )
277  GO TO 30
278  END IF
279 *
280 * Generate random left hand side vector of GLM
281 *
282  DO 20 i = 1, n
283  x( i ) = slarnd( 2, iseed )
284  20 CONTINUE
285 *
286  CALL sglmts( n, m, p, a, af, lda, b, bf, ldb, x,
287  $ x( nmax+1 ), x( 2*nmax+1 ), x( 3*nmax+1 ),
288  $ work, lwork, rwork, resid )
289 *
290 * Print information about the tests that did not
291 * pass the threshold.
292 *
293  IF( resid.GE.thresh ) THEN
294  IF( nfail.EQ.0 .AND. firstt ) THEN
295  firstt = .false.
296  CALL alahdg( nout, path )
297  END IF
298  WRITE( nout, fmt = 9998 )n, m, p, imat, 1, resid
299  nfail = nfail + 1
300  END IF
301  nrun = nrun + 1
302 *
303  30 CONTINUE
304  40 CONTINUE
305 *
306 * Print a summary of the results.
307 *
308  CALL alasum( path, nout, nfail, nrun, 0 )
309 *
310  9999 FORMAT( ' SLATMS in SCKGLM INFO = ', i5 )
311  9998 FORMAT( ' N=', i4, ' M=', i4, ', P=', i4, ', type ', i2,
312  $ ', test ', i2, ', ratio=', g13.6 )
313  9997 FORMAT( ' *** Invalid input for GLM: M = ', i6, ', P = ', i6,
314  $ ', N = ', i6, ';', / ' must satisfy M <= N <= M+P ',
315  $ '(this set of values will be skipped)' )
316  RETURN
317 *
318 * End of SCKGLM
319 *
subroutine alareq(PATH, NMATS, DOTYPE, NTYPES, NIN, NOUT)
ALAREQ
Definition: alareq.f:90
subroutine alahdg(IOUNIT, PATH)
ALAHDG
Definition: alahdg.f:62
subroutine alasum(TYPE, NOUT, NFAIL, NRUN, NERRS)
ALASUM
Definition: alasum.f:73
real function slarnd(IDIST, ISEED)
SLARND
Definition: slarnd.f:73
subroutine slatms(M, N, DIST, ISEED, SYM, D, MODE, COND, DMAX, KL, KU, PACK, A, LDA, WORK, INFO)
SLATMS
Definition: slatms.f:321
subroutine slatb9(PATH, IMAT, M, P, N, TYPE, KLA, KUA, KLB, KUB, ANORM, BNORM, MODEA, MODEB, CNDNMA, CNDNMB, DISTA, DISTB)
SLATB9
Definition: slatb9.f:170
subroutine sglmts(N, M, P, A, AF, LDA, B, BF, LDB, D, DF, X, U, WORK, LWORK, RWORK, RESULT)
SGLMTS
Definition: sglmts.f:149
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