1: *> \brief \b DISNAN tests input for NaN.
2: *
3: * =========== DOCUMENTATION ===========
4: *
5: * Online html documentation available at
6: * http://www.netlib.org/lapack/explore-html/
7: *
8: *> \htmlonly
9: *> Download DISNAN + dependencies
10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/disnan.f">
11: *> [TGZ]</a>
12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/disnan.f">
13: *> [ZIP]</a>
14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/disnan.f">
15: *> [TXT]</a>
16: *> \endhtmlonly
17: *
18: * Definition:
19: * ===========
20: *
21: * LOGICAL FUNCTION DISNAN( DIN )
22: *
23: * .. Scalar Arguments ..
24: * DOUBLE PRECISION DIN
25: * ..
26: *
27: *
28: *> \par Purpose:
29: * =============
30: *>
31: *> \verbatim
32: *>
33: *> DISNAN returns .TRUE. if its argument is NaN, and .FALSE.
34: *> otherwise. To be replaced by the Fortran 2003 intrinsic in the
35: *> future.
36: *> \endverbatim
37: *
38: * Arguments:
39: * ==========
40: *
41: *> \param[in] DIN
42: *> \verbatim
43: *> DIN is DOUBLE PRECISION
44: *> Input to test for NaN.
45: *> \endverbatim
46: *
47: * Authors:
48: * ========
49: *
50: *> \author Univ. of Tennessee
51: *> \author Univ. of California Berkeley
52: *> \author Univ. of Colorado Denver
53: *> \author NAG Ltd.
54: *
55: *> \date September 2012
56: *
57: *> \ingroup auxOTHERauxiliary
58: *
59: * =====================================================================
60: LOGICAL FUNCTION DISNAN( DIN )
61: *
62: * -- LAPACK auxiliary routine (version 3.4.2) --
63: * -- LAPACK is a software package provided by Univ. of Tennessee, --
64: * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
65: * September 2012
66: *
67: * .. Scalar Arguments ..
68: DOUBLE PRECISION DIN
69: * ..
70: *
71: * =====================================================================
72: *
73: * .. External Functions ..
74: LOGICAL DLAISNAN
75: EXTERNAL DLAISNAN
76: * ..
77: * .. Executable Statements ..
78: DISNAN = DLAISNAN(DIN,DIN)
79: RETURN
80: END
CVSweb interface <joel.bertrand@systella.fr>