LAPACK  3.10.1
LAPACK: Linear Algebra PACKage
serrps.f
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1 *> \brief \b SERRPS
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 SERRPS( PATH, NUNIT )
12 *
13 * .. Scalar Arguments ..
14 * INTEGER NUNIT
15 * CHARACTER*3 PATH
16 * ..
17 *
18 *
19 *> \par Purpose:
20 * =============
21 *>
22 *> \verbatim
23 *>
24 *> SERRPS tests the error exits for the REAL routines
25 *> for SPSTRF..
26 *> \endverbatim
27 *
28 * Arguments:
29 * ==========
30 *
31 *> \param[in] PATH
32 *> \verbatim
33 *> PATH is CHARACTER*3
34 *> The LAPACK path name for the routines to be tested.
35 *> \endverbatim
36 *>
37 *> \param[in] NUNIT
38 *> \verbatim
39 *> NUNIT is INTEGER
40 *> The unit number for output.
41 *> \endverbatim
42 *
43 * Authors:
44 * ========
45 *
46 *> \author Univ. of Tennessee
47 *> \author Univ. of California Berkeley
48 *> \author Univ. of Colorado Denver
49 *> \author NAG Ltd.
50 *
51 *> \ingroup single_lin
52 *
53 * =====================================================================
54  SUBROUTINE serrps( PATH, NUNIT )
55 *
56 * -- LAPACK test routine --
57 * -- LAPACK is a software package provided by Univ. of Tennessee, --
58 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
59 *
60 * .. Scalar Arguments ..
61  INTEGER NUNIT
62  CHARACTER*3 PATH
63 * ..
64 *
65 * =====================================================================
66 *
67 * .. Parameters ..
68  INTEGER NMAX
69  parameter( nmax = 4 )
70 * ..
71 * .. Local Scalars ..
72  INTEGER I, INFO, J, RANK
73 * ..
74 * .. Local Arrays ..
75  REAL A( NMAX, NMAX ), WORK( 2*NMAX )
76  INTEGER PIV( NMAX )
77 * ..
78 * .. External Subroutines ..
79  EXTERNAL alaesm, chkxer, spstf2, spstrf
80 * ..
81 * .. Scalars in Common ..
82  INTEGER INFOT, NOUT
83  LOGICAL LERR, OK
84  CHARACTER*32 SRNAMT
85 * ..
86 * .. Common blocks ..
87  COMMON / infoc / infot, nout, ok, lerr
88  COMMON / srnamc / srnamt
89 * ..
90 * .. Intrinsic Functions ..
91  INTRINSIC real
92 * ..
93 * .. Executable Statements ..
94 *
95  nout = nunit
96  WRITE( nout, fmt = * )
97 *
98 * Set the variables to innocuous values.
99 *
100  DO 110 j = 1, nmax
101  DO 100 i = 1, nmax
102  a( i, j ) = 1.0 / real( i+j )
103 *
104  100 CONTINUE
105  piv( j ) = j
106  work( j ) = 0.
107  work( nmax+j ) = 0.
108 *
109  110 CONTINUE
110  ok = .true.
111 *
112 *
113 * Test error exits of the routines that use the Cholesky
114 * decomposition of a symmetric positive semidefinite matrix.
115 *
116 * SPSTRF
117 *
118  srnamt = 'SPSTRF'
119  infot = 1
120  CALL spstrf( '/', 0, a, 1, piv, rank, -1.0, work, info )
121  CALL chkxer( 'SPSTRF', infot, nout, lerr, ok )
122  infot = 2
123  CALL spstrf( 'U', -1, a, 1, piv, rank, -1.0, work, info )
124  CALL chkxer( 'SPSTRF', infot, nout, lerr, ok )
125  infot = 4
126  CALL spstrf( 'U', 2, a, 1, piv, rank, -1.0, work, info )
127  CALL chkxer( 'SPSTRF', infot, nout, lerr, ok )
128 *
129 * SPSTF2
130 *
131  srnamt = 'SPSTF2'
132  infot = 1
133  CALL spstf2( '/', 0, a, 1, piv, rank, -1.0, work, info )
134  CALL chkxer( 'SPSTF2', infot, nout, lerr, ok )
135  infot = 2
136  CALL spstf2( 'U', -1, a, 1, piv, rank, -1.0, work, info )
137  CALL chkxer( 'SPSTF2', infot, nout, lerr, ok )
138  infot = 4
139  CALL spstf2( 'U', 2, a, 1, piv, rank, -1.0, work, info )
140  CALL chkxer( 'SPSTF2', infot, nout, lerr, ok )
141 *
142 *
143 * Print a summary line.
144 *
145  CALL alaesm( path, ok, nout )
146 *
147  RETURN
148 *
149 * End of SERRPS
150 *
151  END
subroutine chkxer(SRNAMT, INFOT, NOUT, LERR, OK)
Definition: cblat2.f:3196
subroutine alaesm(PATH, OK, NOUT)
ALAESM
Definition: alaesm.f:63
subroutine spstrf(UPLO, N, A, LDA, PIV, RANK, TOL, WORK, INFO)
SPSTRF computes the Cholesky factorization with complete pivoting of a real symmetric positive semide...
Definition: spstrf.f:141
subroutine spstf2(UPLO, N, A, LDA, PIV, RANK, TOL, WORK, INFO)
SPSTF2 computes the Cholesky factorization with complete pivoting of a real symmetric positive semide...
Definition: spstf2.f:141
subroutine serrps(PATH, NUNIT)
SERRPS
Definition: serrps.f:55