LAPACK  3.10.1
LAPACK: Linear Algebra PACKage
zerrab.f
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1 *> \brief \b ZERRAB
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 ZERRAB( NUNIT )
12 *
13 * .. Scalar Arguments ..
14 * INTEGER NUNIT
15 * ..
16 *
17 *
18 *> \par Purpose:
19 * =============
20 *>
21 *> \verbatim
22 *>
23 *> DERRAB tests the error exits for ZCGESV.
24 *> \endverbatim
25 *
26 * Arguments:
27 * ==========
28 *
29 *> \param[in] NUNIT
30 *> \verbatim
31 *> NUNIT is INTEGER
32 *> The unit number for output.
33 *> \endverbatim
34 *
35 * Authors:
36 * ========
37 *
38 *> \author Univ. of Tennessee
39 *> \author Univ. of California Berkeley
40 *> \author Univ. of Colorado Denver
41 *> \author NAG Ltd.
42 *
43 *> \ingroup complex16_lin
44 *
45 * =====================================================================
46  SUBROUTINE zerrab( NUNIT )
47 *
48 * -- LAPACK test routine --
49 * -- LAPACK is a software package provided by Univ. of Tennessee, --
50 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
51 *
52 * .. Scalar Arguments ..
53  INTEGER NUNIT
54 * ..
55 *
56 * =====================================================================
57 *
58 * .. Parameters ..
59  INTEGER NMAX
60  parameter( nmax = 4 )
61 * ..
62 * .. Local Scalars ..
63  INTEGER I, INFO, ITER, J
64 * ..
65 * .. Local Arrays ..
66  INTEGER IP( NMAX )
67  COMPLEX*16 A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
68  $ C( NMAX ), R( NMAX ), R1( NMAX ), R2( NMAX ),
69  $ W( 2*NMAX ), X( NMAX )
70  COMPLEX*16 WORK(1)
71  COMPLEX SWORK(1)
72  DOUBLE PRECISION RWORK(1)
73 * ..
74 * .. External Functions ..
75 * ..
76 * .. External Subroutines ..
77  EXTERNAL chkxer, zcgesv
78 * ..
79 * .. Scalars in Common ..
80  LOGICAL LERR, OK
81  CHARACTER*32 SRNAMT
82  INTEGER INFOT, NOUT
83 * ..
84 * .. Common blocks ..
85  COMMON / infoc / infot, nout, ok, lerr
86  COMMON / srnamc / srnamt
87 * ..
88 * .. Intrinsic Functions ..
89  INTRINSIC dble
90 * ..
91 * .. Executable Statements ..
92 *
93  nout = nunit
94  WRITE( nout, fmt = * )
95 *
96 * Set the variables to innocuous values.
97 *
98  DO 20 j = 1, nmax
99  DO 10 i = 1, nmax
100  a( i, j ) = 1.d0 / dble( i+j )
101  af( i, j ) = 1.d0 / dble( i+j )
102  10 CONTINUE
103  b( j ) = 0.d0
104  r1( j ) = 0.d0
105  r2( j ) = 0.d0
106  w( j ) = 0.d0
107  x( j ) = 0.d0
108  c( j ) = 0.d0
109  r( j ) = 0.d0
110  ip( j ) = j
111  20 CONTINUE
112  ok = .true.
113 *
114  srnamt = 'ZCGESV'
115  infot = 1
116  CALL zcgesv(-1,0,a,1,ip,b,1,x,1,work,swork,rwork,iter,info)
117  CALL chkxer( 'ZCGESV', infot, nout, lerr, ok )
118  infot = 2
119  CALL zcgesv(0,-1,a,1,ip,b,1,x,1,work,swork,rwork,iter,info)
120  CALL chkxer( 'ZCGESV', infot, nout, lerr, ok )
121  infot = 4
122  CALL zcgesv(2,1,a,1,ip,b,2,x,2,work,swork,rwork,iter,info)
123  CALL chkxer( 'ZCGESV', infot, nout, lerr, ok )
124  infot = 7
125  CALL zcgesv(2,1,a,2,ip,b,1,x,2,work,swork,rwork,iter,info)
126  CALL chkxer( 'ZCGESV', infot, nout, lerr, ok )
127  infot = 9
128  CALL zcgesv(2,1,a,2,ip,b,2,x,1,work,swork,rwork,iter,info)
129  CALL chkxer( 'ZCGESV', infot, nout, lerr, ok )
130 *
131 * Print a summary line.
132 *
133  IF( ok ) THEN
134  WRITE( nout, fmt = 9999 )'ZCGESV'
135  ELSE
136  WRITE( nout, fmt = 9998 )'ZCGESV'
137  END IF
138 *
139  9999 FORMAT( 1x, a6, ' drivers passed the tests of the error exits' )
140  9998 FORMAT( ' *** ', a6, ' drivers failed the tests of the error ',
141  $ 'exits ***' )
142 *
143  RETURN
144 *
145 * End of ZERRAB
146 *
147  END
subroutine chkxer(SRNAMT, INFOT, NOUT, LERR, OK)
Definition: cblat2.f:3196
subroutine zerrab(NUNIT)
ZERRAB
Definition: zerrab.f:47
subroutine zcgesv(N, NRHS, A, LDA, IPIV, B, LDB, X, LDX, WORK, SWORK, RWORK, ITER, INFO)
ZCGESV computes the solution to system of linear equations A * X = B for GE matrices (mixed precision...
Definition: zcgesv.f:201