ergo
template_lapack_isnan.h
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1 /* Ergo, version 3.7, a program for linear scaling electronic structure
2  * calculations.
3  * Copyright (C) 2018 Elias Rudberg, Emanuel H. Rubensson, Pawel Salek,
4  * and Anastasia Kruchinina.
5  *
6  * This program is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see <http://www.gnu.org/licenses/>.
18  *
19  * Primary academic reference:
20  * Ergo: An open-source program for linear-scaling electronic structure
21  * calculations,
22  * Elias Rudberg, Emanuel H. Rubensson, Pawel Salek, and Anastasia
23  * Kruchinina,
24  * SoftwareX 7, 107 (2018),
25  * <http://dx.doi.org/10.1016/j.softx.2018.03.005>
26  *
27  * For further information about Ergo, see <http://www.ergoscf.org>.
28  */
29 
30  /* This file belongs to the template_lapack part of the Ergo source
31  * code. The source files in the template_lapack directory are modified
32  * versions of files originally distributed as CLAPACK, see the
33  * Copyright/license notice in the file template_lapack/COPYING.
34  */
35 
36 
37 #ifndef TEMPLATE_LAPACK_ISNAN_HEADER
38 #define TEMPLATE_LAPACK_ISNAN_HEADER
39 
40 
42 
43 
44 template<class Treal>
46 {
47  /* System generated locals */
48  logical ret_val;
49 
50 
51 /* -- LAPACK auxiliary routine (version 3.2) -- */
52 /* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
53 /* November 2006 */
54 
55 /* .. Scalar Arguments .. */
56 /* .. */
57 
58 /* Purpose */
59 /* ======= */
60 
61 /* DISNAN returns .TRUE. if its argument is NaN, and .FALSE. */
62 /* otherwise. To be replaced by the Fortran 2003 intrinsic in the */
63 /* future. */
64 
65 /* Arguments */
66 /* ========= */
67 
68 /* DIN (input) DOUBLE PRECISION */
69 /* Input to test for NaN. */
70 
71 /* ===================================================================== */
72 
73 /* .. External Functions .. */
74 /* .. */
75 /* .. Executable Statements .. */
76  ret_val = template_lapack_laisnan(din, din);
77  return ret_val;
78 } /* disnan_ */
79 
80 #endif
logical template_lapack_isnan(Treal *din)
Definition: template_lapack_isnan.h:45
logical template_lapack_laisnan(Treal *din1, Treal *din2)
Definition: template_lapack_laisnan.h:41
bool logical
Definition: template_blas_common.h:41