source: trunk/FACT++/erfa/src/trxp.c@ 18403

Last change on this file since 18403 was 18348, checked in by tbretz, 9 years ago
File size: 3.7 KB
Line 
1#include "erfa.h"
2
3void eraTrxp(double r[3][3], double p[3], double trp[3])
4/*
5** - - - - - - - -
6** e r a T r x p
7** - - - - - - - -
8**
9** Multiply a p-vector by the transpose of an r-matrix.
10**
11** Given:
12** r double[3][3] r-matrix
13** p double[3] p-vector
14**
15** Returned:
16** trp double[3] r * p
17**
18** Note:
19** It is permissible for p and trp to be the same array.
20**
21** Called:
22** eraTr transpose r-matrix
23** eraRxp product of r-matrix and p-vector
24**
25** Copyright (C) 2013-2015, NumFOCUS Foundation.
26** Derived, with permission, from the SOFA library. See notes at end of file.
27*/
28{
29 double tr[3][3];
30
31/* Transpose of matrix r. */
32 eraTr(r, tr);
33
34/* Matrix tr * vector p -> vector trp. */
35 eraRxp(tr, p, trp);
36
37 return;
38
39}
40/*----------------------------------------------------------------------
41**
42**
43** Copyright (C) 2013-2015, NumFOCUS Foundation.
44** All rights reserved.
45**
46** This library is derived, with permission, from the International
47** Astronomical Union's "Standards of Fundamental Astronomy" library,
48** available from http://www.iausofa.org.
49**
50** The ERFA version is intended to retain identical functionality to
51** the SOFA library, but made distinct through different function and
52** file names, as set out in the SOFA license conditions. The SOFA
53** original has a role as a reference standard for the IAU and IERS,
54** and consequently redistribution is permitted only in its unaltered
55** state. The ERFA version is not subject to this restriction and
56** therefore can be included in distributions which do not support the
57** concept of "read only" software.
58**
59** Although the intent is to replicate the SOFA API (other than
60** replacement of prefix names) and results (with the exception of
61** bugs; any that are discovered will be fixed), SOFA is not
62** responsible for any errors found in this version of the library.
63**
64** If you wish to acknowledge the SOFA heritage, please acknowledge
65** that you are using a library derived from SOFA, rather than SOFA
66** itself.
67**
68**
69** TERMS AND CONDITIONS
70**
71** Redistribution and use in source and binary forms, with or without
72** modification, are permitted provided that the following conditions
73** are met:
74**
75** 1 Redistributions of source code must retain the above copyright
76** notice, this list of conditions and the following disclaimer.
77**
78** 2 Redistributions in binary form must reproduce the above copyright
79** notice, this list of conditions and the following disclaimer in
80** the documentation and/or other materials provided with the
81** distribution.
82**
83** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
84** the International Astronomical Union nor the names of its
85** contributors may be used to endorse or promote products derived
86** from this software without specific prior written permission.
87**
88** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
89** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
90** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
91** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
92** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
93** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
94** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
95** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
96** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
97** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
98** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
99** POSSIBILITY OF SUCH DAMAGE.
100**
101*/
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