1 #include "erfa.h"
2
eraPpp(double a[3],double b[3],double apb[3])3 void eraPpp(double a[3], double b[3], double apb[3])
4 /*
5 ** - - - - - - -
6 ** e r a P p p
7 ** - - - - - - -
8 **
9 ** P-vector addition.
10 **
11 ** Given:
12 ** a double[3] first p-vector
13 ** b double[3] second p-vector
14 **
15 ** Returned:
16 ** apb double[3] a + b
17 **
18 ** Note:
19 ** It is permissible to re-use the same array for any of the
20 ** arguments.
21 **
22 ** This revision: 2021 May 11
23 **
24 ** Copyright (C) 2013-2021, NumFOCUS Foundation.
25 ** Derived, with permission, from the SOFA library. See notes at end of file.
26 */
27 {
28 apb[0] = a[0] + b[0];
29 apb[1] = a[1] + b[1];
30 apb[2] = a[2] + b[2];
31
32 /* Finished. */
33
34 }
35 /*----------------------------------------------------------------------
36 **
37 **
38 ** Copyright (C) 2013-2021, NumFOCUS Foundation.
39 ** All rights reserved.
40 **
41 ** This library is derived, with permission, from the International
42 ** Astronomical Union's "Standards of Fundamental Astronomy" library,
43 ** available from http://www.iausofa.org.
44 **
45 ** The ERFA version is intended to retain identical functionality to
46 ** the SOFA library, but made distinct through different function and
47 ** file names, as set out in the SOFA license conditions. The SOFA
48 ** original has a role as a reference standard for the IAU and IERS,
49 ** and consequently redistribution is permitted only in its unaltered
50 ** state. The ERFA version is not subject to this restriction and
51 ** therefore can be included in distributions which do not support the
52 ** concept of "read only" software.
53 **
54 ** Although the intent is to replicate the SOFA API (other than
55 ** replacement of prefix names) and results (with the exception of
56 ** bugs; any that are discovered will be fixed), SOFA is not
57 ** responsible for any errors found in this version of the library.
58 **
59 ** If you wish to acknowledge the SOFA heritage, please acknowledge
60 ** that you are using a library derived from SOFA, rather than SOFA
61 ** itself.
62 **
63 **
64 ** TERMS AND CONDITIONS
65 **
66 ** Redistribution and use in source and binary forms, with or without
67 ** modification, are permitted provided that the following conditions
68 ** are met:
69 **
70 ** 1 Redistributions of source code must retain the above copyright
71 ** notice, this list of conditions and the following disclaimer.
72 **
73 ** 2 Redistributions in binary form must reproduce the above copyright
74 ** notice, this list of conditions and the following disclaimer in
75 ** the documentation and/or other materials provided with the
76 ** distribution.
77 **
78 ** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
79 ** the International Astronomical Union nor the names of its
80 ** contributors may be used to endorse or promote products derived
81 ** from this software without specific prior written permission.
82 **
83 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
84 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
85 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
86 ** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
87 ** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
88 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
89 ** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
90 ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
91 ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92 ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
93 ** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
94 ** POSSIBILITY OF SUCH DAMAGE.
95 **
96 */
97