LAPACK  3.10.1 LAPACK: Linear Algebra PACKage
ilauplo.f
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1 *> \brief \b ILAUPLO
2 *
3 * =========== DOCUMENTATION ===========
4 *
5 * Online html documentation available at
6 * http://www.netlib.org/lapack/explore-html/
7 *
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16 *> \endhtmlonly
17 *
18 * Definition:
19 * ===========
20 *
21 * INTEGER FUNCTION ILAUPLO( UPLO )
22 *
23 * .. Scalar Arguments ..
24 * CHARACTER UPLO
25 * ..
26 *
27 *
28 *> \par Purpose:
29 * =============
30 *>
31 *> \verbatim
32 *>
33 *> This subroutine translated from a character string specifying a
34 *> upper- or lower-triangular matrix to the relevant BLAST-specified
35 *> integer constant.
36 *>
37 *> ILAUPLO returns an INTEGER. If ILAUPLO < 0, then the input is not
38 *> a character indicating an upper- or lower-triangular matrix.
39 *> Otherwise ILAUPLO returns the constant value corresponding to UPLO.
40 *> \endverbatim
41 *
42 * Arguments:
43 * ==========
44 *
45 *
46 * Authors:
47 * ========
48 *
49 *> \author Univ. of Tennessee
50 *> \author Univ. of California Berkeley
51 *> \author Univ. of Colorado Denver
52 *> \author NAG Ltd.
53 *
54 *> \ingroup auxOTHERcomputational
55 *
56 * =====================================================================
57  INTEGER FUNCTION ilauplo( UPLO )
58 *
59 * -- LAPACK computational routine --
60 * -- LAPACK is a software package provided by Univ. of Tennessee, --
61 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
62 *
63 * .. Scalar Arguments ..
64  CHARACTER uplo
65 * ..
66 *
67 * =====================================================================
68 *
69 * .. Parameters ..
70  INTEGER blas_upper, blas_lower
71  parameter( blas_upper = 121, blas_lower = 122 )
72 * ..
73 * .. External Functions ..
74  LOGICAL lsame
75  EXTERNAL lsame
76 * ..
77 * .. Executable Statements ..
78  IF( lsame( uplo, 'U' ) ) THEN
79  ilauplo = blas_upper
80  ELSE IF( lsame( uplo, 'L' ) ) THEN
81  ilauplo = blas_lower
82  ELSE
83  ilauplo = -1
84  END IF
85  RETURN
86 *
87 * End of ILAUPLO
88 *
89  END
logical function lsame(CA, CB)
LSAME
Definition: lsame.f:53
integer function ilauplo(UPLO)
ILAUPLO
Definition: ilauplo.f:58