LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ schkqrt()

subroutine schkqrt ( real  THRESH,
logical  TSTERR,
integer  NM,
integer, dimension( * )  MVAL,
integer  NN,
integer, dimension( * )  NVAL,
integer  NNB,
integer, dimension( * )  NBVAL,
integer  NOUT 
)

SCHKQRT

Purpose:
 SCHKQRT tests SGEQRT and SGEMQRT.
Parameters
[in]THRESH
          THRESH is REAL
          The threshold value for the test ratios.  A result is
          included in the output file if RESULT >= THRESH.  To have
          every test ratio printed, use THRESH = 0.
[in]TSTERR
          TSTERR is LOGICAL
          Flag that indicates whether error exits are to be tested.
[in]NM
          NM is INTEGER
          The number of values of M contained in the vector MVAL.
[in]MVAL
          MVAL is INTEGER array, dimension (NM)
          The values of the matrix row dimension M.
[in]NN
          NN is INTEGER
          The number of values of N contained in the vector NVAL.
[in]NVAL
          NVAL is INTEGER array, dimension (NN)
          The values of the matrix column dimension N.
[in]NNB
          NNB is INTEGER
          The number of values of NB contained in the vector NBVAL.
[in]NBVAL
          NBVAL is INTEGER array, dimension (NBVAL)
          The values of the blocksize NB.
[in]NOUT
          NOUT is INTEGER
          The unit number for output.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
December 2016

Definition at line 102 of file schkqrt.f.

102  IMPLICIT NONE
103 *
104 * -- LAPACK test routine (version 3.7.0) --
105 * -- LAPACK is a software package provided by Univ. of Tennessee, --
106 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
107 * December 2016
108 *
109 * .. Scalar Arguments ..
110  LOGICAL tsterr
111  INTEGER nm, nn, nnb, nout
112  REAL thresh
113 * ..
114 * .. Array Arguments ..
115  INTEGER mval( * ), nbval( * ), nval( * )
116 *
117 * =====================================================================
118 *
119 * .. Parameters ..
120  INTEGER ntests
121  parameter( ntests = 6 )
122 * ..
123 * .. Local Scalars ..
124  CHARACTER*3 path
125  INTEGER i, j, k, t, m, n, nb, nfail, nerrs, nrun,
126  $ minmn
127 * ..
128 * .. Local Arrays ..
129  REAL result( ntests )
130 * ..
131 * .. External Subroutines ..
132  EXTERNAL alaerh, alahd, alasum, serrqrt, sqrt04
133 * ..
134 * .. Scalars in Common ..
135  LOGICAL lerr, ok
136  CHARACTER*32 srnamt
137  INTEGER infot, nunit
138 * ..
139 * .. Common blocks ..
140  COMMON / infoc / infot, nunit, ok, lerr
141  COMMON / srnamc / srnamt
142 * ..
143 * .. Executable Statements ..
144 *
145 * Initialize constants
146 *
147  path( 1: 1 ) = 'S'
148  path( 2: 3 ) = 'QT'
149  nrun = 0
150  nfail = 0
151  nerrs = 0
152 *
153 * Test the error exits
154 *
155  IF( tsterr ) CALL serrqrt( path, nout )
156  infot = 0
157 *
158 * Do for each value of M in MVAL.
159 *
160  DO i = 1, nm
161  m = mval( i )
162 *
163 * Do for each value of N in NVAL.
164 *
165  DO j = 1, nn
166  n = nval( j )
167 *
168 * Do for each possible value of NB
169 *
170  minmn = min( m, n )
171  DO k = 1, nnb
172  nb = nbval( k )
173  IF( (nb.LE.minmn).AND.(nb.GT.0) ) THEN
174 *
175 * Test SGEQRT and SGEMQRT
176 *
177  CALL sqrt04( m, n, nb, result )
178 *
179 * Print information about the tests that did not
180 * pass the threshold.
181 *
182  DO t = 1, ntests
183  IF( result( t ).GE.thresh ) THEN
184  IF( nfail.EQ.0 .AND. nerrs.EQ.0 )
185  $ CALL alahd( nout, path )
186  WRITE( nout, fmt = 9999 )m, n, nb,
187  $ t, result( t )
188  nfail = nfail + 1
189  END IF
190  END DO
191  nrun = nrun + ntests
192  END IF
193  END DO
194  END DO
195  END DO
196 *
197 * Print a summary of the results.
198 *
199  CALL alasum( path, nout, nfail, nrun, nerrs )
200 *
201  9999 FORMAT( ' M=', i5, ', N=', i5, ', NB=', i4,
202  $ ' test(', i2, ')=', g12.5 )
203  RETURN
204 *
205 * End of SCHKQRT
206 *
subroutine alahd(IOUNIT, PATH)
ALAHD
Definition: alahd.f:107
subroutine sqrt04(M, N, NB, RESULT)
SQRT04
Definition: sqrt04.f:75
subroutine alaerh(PATH, SUBNAM, INFO, INFOE, OPTS, M, N, KL, KU, N5, IMAT, NFAIL, NERRS, NOUT)
ALAERH
Definition: alaerh.f:149
subroutine serrqrt(PATH, NUNIT)
SERRQRT
Definition: serrqrt.f:57
subroutine alasum(TYPE, NOUT, NFAIL, NRUN, NERRS)
ALASUM
Definition: alasum.f:75
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