File Coverage

erfasrc/src/pvxpv.c
Criterion Covered Total %
statement 0 8 0.0
branch n/a
condition n/a
subroutine n/a
pod n/a
total 0 8 0.0


line stmt bran cond sub pod time code
1             #include "erfa.h"
2              
3 0           void eraPvxpv(double a[2][3], double b[2][3], double axb[2][3])
4             /*
5             ** - - - - - - - - -
6             ** e r a P v x p v
7             ** - - - - - - - - -
8             **
9             ** Outer (=vector=cross) product of two pv-vectors.
10             **
11             ** Given:
12             ** a double[2][3] first pv-vector
13             ** b double[2][3] second pv-vector
14             **
15             ** Returned:
16             ** axb double[2][3] a x b
17             **
18             ** Notes:
19             **
20             ** 1) If the position and velocity components of the two pv-vectors are
21             ** ( ap, av ) and ( bp, bv ), the result, a x b, is the pair of
22             ** vectors ( ap x bp, ap x bv + av x bp ). The two vectors are the
23             ** cross-product of the two p-vectors and its derivative.
24             **
25             ** 2) It is permissible to re-use the same array for any of the
26             ** arguments.
27             **
28             ** Called:
29             ** eraCpv copy pv-vector
30             ** eraPxp vector product of two p-vectors
31             ** eraPpp p-vector plus p-vector
32             **
33             ** Copyright (C) 2013-2019, NumFOCUS Foundation.
34             ** Derived, with permission, from the SOFA library. See notes at end of file.
35             */
36             {
37             double wa[2][3], wb[2][3], axbd[3], adxb[3];
38              
39              
40             /* Make copies of the inputs. */
41 0           eraCpv(a, wa);
42 0           eraCpv(b, wb);
43              
44             /* a x b = position part of result. */
45 0           eraPxp(wa[0], wb[0], axb[0]);
46              
47             /* a x bdot + adot x b = velocity part of result. */
48 0           eraPxp(wa[0], wb[1], axbd);
49 0           eraPxp(wa[1], wb[0], adxb);
50 0           eraPpp(axbd, adxb, axb[1]);
51              
52 0           return;
53              
54             }
55             /*----------------------------------------------------------------------
56             **
57             **
58             ** Copyright (C) 2013-2019, NumFOCUS Foundation.
59             ** All rights reserved.
60             **
61             ** This library is derived, with permission, from the International
62             ** Astronomical Union's "Standards of Fundamental Astronomy" library,
63             ** available from http://www.iausofa.org.
64             **
65             ** The ERFA version is intended to retain identical functionality to
66             ** the SOFA library, but made distinct through different function and
67             ** file names, as set out in the SOFA license conditions. The SOFA
68             ** original has a role as a reference standard for the IAU and IERS,
69             ** and consequently redistribution is permitted only in its unaltered
70             ** state. The ERFA version is not subject to this restriction and
71             ** therefore can be included in distributions which do not support the
72             ** concept of "read only" software.
73             **
74             ** Although the intent is to replicate the SOFA API (other than
75             ** replacement of prefix names) and results (with the exception of
76             ** bugs; any that are discovered will be fixed), SOFA is not
77             ** responsible for any errors found in this version of the library.
78             **
79             ** If you wish to acknowledge the SOFA heritage, please acknowledge
80             ** that you are using a library derived from SOFA, rather than SOFA
81             ** itself.
82             **
83             **
84             ** TERMS AND CONDITIONS
85             **
86             ** Redistribution and use in source and binary forms, with or without
87             ** modification, are permitted provided that the following conditions
88             ** are met:
89             **
90             ** 1 Redistributions of source code must retain the above copyright
91             ** notice, this list of conditions and the following disclaimer.
92             **
93             ** 2 Redistributions in binary form must reproduce the above copyright
94             ** notice, this list of conditions and the following disclaimer in
95             ** the documentation and/or other materials provided with the
96             ** distribution.
97             **
98             ** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
99             ** the International Astronomical Union nor the names of its
100             ** contributors may be used to endorse or promote products derived
101             ** from this software without specific prior written permission.
102             **
103             ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
104             ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
105             ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
106             ** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
107             ** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
108             ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
109             ** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
110             ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
111             ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
112             ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
113             ** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
114             ** POSSIBILITY OF SUCH DAMAGE.
115             **
116             */