source: branches/FACT++_lidctrl_usb/erfa/src/ppsp.c@ 19875

Last change on this file since 19875 was 18711, checked in by tbretz, 10 years ago
Updated to ERFA 1.3.0 (no relevant code change except the leap second at the beginning of 2017)
File size: 3.7 KB
Line 
1#include "erfa.h"
2
3void eraPpsp(double a[3], double s, double b[3], double apsb[3])
4/*
5** - - - - - - - -
6** e r a P p s p
7** - - - - - - - -
8**
9** P-vector plus scaled p-vector.
10**
11** Given:
12** a double[3] first p-vector
13** s double scalar (multiplier for b)
14** b double[3] second p-vector
15**
16** Returned:
17** apsb double[3] a + s*b
18**
19** Note:
20** It is permissible for any of a, b and apsb to be the same array.
21**
22** Called:
23** eraSxp multiply p-vector by scalar
24** eraPpp p-vector plus p-vector
25**
26** Copyright (C) 2013-2016, NumFOCUS Foundation.
27** Derived, with permission, from the SOFA library. See notes at end of file.
28*/
29{
30 double sb[3];
31
32
33/* s*b. */
34 eraSxp(s, b, sb);
35
36/* a + s*b. */
37 eraPpp(a, sb, apsb);
38
39 return;
40
41}
42/*----------------------------------------------------------------------
43**
44**
45** Copyright (C) 2013-2016, NumFOCUS Foundation.
46** All rights reserved.
47**
48** This library is derived, with permission, from the International
49** Astronomical Union's "Standards of Fundamental Astronomy" library,
50** available from http://www.iausofa.org.
51**
52** The ERFA version is intended to retain identical functionality to
53** the SOFA library, but made distinct through different function and
54** file names, as set out in the SOFA license conditions. The SOFA
55** original has a role as a reference standard for the IAU and IERS,
56** and consequently redistribution is permitted only in its unaltered
57** state. The ERFA version is not subject to this restriction and
58** therefore can be included in distributions which do not support the
59** concept of "read only" software.
60**
61** Although the intent is to replicate the SOFA API (other than
62** replacement of prefix names) and results (with the exception of
63** bugs; any that are discovered will be fixed), SOFA is not
64** responsible for any errors found in this version of the library.
65**
66** If you wish to acknowledge the SOFA heritage, please acknowledge
67** that you are using a library derived from SOFA, rather than SOFA
68** itself.
69**
70**
71** TERMS AND CONDITIONS
72**
73** Redistribution and use in source and binary forms, with or without
74** modification, are permitted provided that the following conditions
75** are met:
76**
77** 1 Redistributions of source code must retain the above copyright
78** notice, this list of conditions and the following disclaimer.
79**
80** 2 Redistributions in binary form must reproduce the above copyright
81** notice, this list of conditions and the following disclaimer in
82** the documentation and/or other materials provided with the
83** distribution.
84**
85** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
86** the International Astronomical Union nor the names of its
87** contributors may be used to endorse or promote products derived
88** from this software without specific prior written permission.
89**
90** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
91** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
92** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
93** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
94** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
95** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
96** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
97** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
98** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
99** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
100** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
101** POSSIBILITY OF SUCH DAMAGE.
102**
103*/
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