132 SUBROUTINE schktz( DOTYPE, NM, MVAL, NN, NVAL, THRESH, TSTERR, A,
133 $ copya, s, tau, work, nout )
147 INTEGER MVAL( * ), NVAL( * )
148 REAL A( * ), COPYA( * ), S( * ),
149 $ tau( * ), work( * )
156 parameter( ntypes = 3 )
158 parameter( ntests = 6 )
160 parameter( one = 1.0e0, zero = 0.0e0 )
164 INTEGER I, IM, IMODE, IN, INFO, K, LDA, LWORK, M,
165 $ mnmin, mode, n, nerrs, nfail, nrun
169 INTEGER ISEED( 4 ), ISEEDY( 4 )
170 REAL RESULT( ntests )
173 REAL SLAMCH, SQRT12, SRZT01, SRZT02, STZT01, STZT02
174 EXTERNAL slamch, sqrt12, srzt01, srzt02, stzt01, stzt02
186 INTEGER INFOT, IOUNIT
189 COMMON / infoc / infot, iounit, ok, lerr
190 COMMON / srnamc / srnamt
193 DATA iseedy / 1988, 1989, 1990, 1991 /
199 path( 1: 1 ) =
'Single precision'
205 iseed( i ) = iseedy( i )
207 eps = slamch(
'Epsilon' )
212 $
CALL serrtz( path, nout )
228 lwork = max( 1, n*n+4*m+n, m*n+2*mnmin+4*n )
231 DO 50 imode = 1, ntypes
232 IF( .NOT.dotype( imode ) )
248 CALL slaset(
'Full', m, n, zero, zero, a, lda )
253 CALL slatms( m, n,
'Uniform', iseed,
254 $
'Nonsymmetric', s, imode,
255 $ one / eps, one, m, n,
'No packing', a,
257 CALL sgeqr2( m, n, a, lda, work, work( mnmin+1 ),
259 CALL slaset(
'Lower', m-1, n, zero, zero, a( 2 ),
261 CALL slaord(
'Decreasing', mnmin, s, 1 )
266 CALL slacpy(
'All', m, n, a, lda, copya, lda )
272 CALL stzrqf( m, n, a, lda, tau, info )
276 result( 1 ) = sqrt12( m, m, a, lda, s, work,
281 result( 2 ) = stzt01( m, n, copya, a, lda, tau, work,
286 result( 3 ) = stzt02( m, n, a, lda, tau, work, lwork )
294 CALL slaset(
'Full', m, n, zero, zero, a, lda )
299 CALL slatms( m, n,
'Uniform', iseed,
300 $
'Nonsymmetric', s, imode,
301 $ one / eps, one, m, n,
'No packing', a,
303 CALL sgeqr2( m, n, a, lda, work, work( mnmin+1 ),
305 CALL slaset(
'Lower', m-1, n, zero, zero, a( 2 ),
307 CALL slaord(
'Decreasing', mnmin, s, 1 )
312 CALL slacpy(
'All', m, n, a, lda, copya, lda )
318 CALL stzrzf( m, n, a, lda, tau, work, lwork, info )
322 result( 4 ) = sqrt12( m, m, a, lda, s, work,
327 result( 5 ) = srzt01( m, n, copya, a, lda, tau, work,
332 result( 6 ) = srzt02( m, n, a, lda, tau, work, lwork )
338 IF( result( k ).GE.thresh )
THEN
339 IF( nfail.EQ.0 .AND. nerrs.EQ.0 )
340 $
CALL alahd( nout, path )
341 WRITE( nout, fmt = 9999 )m, n, imode, k,
354 CALL alasum( path, nout, nfail, nrun, nerrs )
356 9999
FORMAT(
' M =', i5,
', N =', i5,
', type ', i2,
', test ', i2,
357 $
', ratio =', g12.5 )
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...
subroutine alahd(IOUNIT, PATH)
ALAHD
subroutine slatms(M, N, DIST, ISEED, SYM, D, MODE, COND, DMAX, KL, KU, PACK, A, LDA, WORK, INFO)
SLATMS
subroutine alasum(TYPE, NOUT, NFAIL, NRUN, NERRS)
ALASUM
subroutine slacpy(UPLO, M, N, A, LDA, B, LDB)
SLACPY copies all or part of one two-dimensional array to another.
subroutine serrtz(PATH, NUNIT)
SERRTZ
subroutine stzrqf(M, N, A, LDA, TAU, INFO)
STZRQF
subroutine slaord(JOB, N, X, INCX)
SLAORD
subroutine schktz(DOTYPE, NM, MVAL, NN, NVAL, THRESH, TSTERR, A, COPYA, S, TAU, WORK, NOUT)
SCHKTZ
subroutine stzrzf(M, N, A, LDA, TAU, WORK, LWORK, INFO)
STZRZF
subroutine sgeqr2(M, N, A, LDA, TAU, WORK, INFO)
SGEQR2 computes the QR factorization of a general rectangular matrix using an unblocked algorithm...