File Coverage

erfasrc/src/pmat06.c
Criterion Covered Total %
statement 4 4 100.0
branch n/a
condition n/a
subroutine n/a
pod n/a
total 4 4 100.0


line stmt bran cond sub pod time code
1             #include "erfa.h"
2              
3 184           void eraPmat06(double date1, double date2, double rbp[3][3])
4             /*
5             ** - - - - - - - - - -
6             ** e r a P m a t 0 6
7             ** - - - - - - - - - -
8             **
9             ** Precession matrix (including frame bias) from GCRS to a specified
10             ** date, IAU 2006 model.
11             **
12             ** Given:
13             ** date1,date2 double TT as a 2-part Julian Date (Note 1)
14             **
15             ** Returned:
16             ** rbp double[3][3] bias-precession matrix (Note 2)
17             **
18             ** Notes:
19             **
20             ** 1) The TT date date1+date2 is a Julian Date, apportioned in any
21             ** convenient way between the two arguments. For example,
22             ** JD(TT)=2450123.7 could be expressed in any of these ways,
23             ** among others:
24             **
25             ** date1 date2
26             **
27             ** 2450123.7 0.0 (JD method)
28             ** 2451545.0 -1421.3 (J2000 method)
29             ** 2400000.5 50123.2 (MJD method)
30             ** 2450123.5 0.2 (date & time method)
31             **
32             ** The JD method is the most natural and convenient to use in
33             ** cases where the loss of several decimal digits of resolution
34             ** is acceptable. The J2000 method is best matched to the way
35             ** the argument is handled internally and will deliver the
36             ** optimum resolution. The MJD method and the date & time methods
37             ** are both good compromises between resolution and convenience.
38             **
39             ** 2) The matrix operates in the sense V(date) = rbp * V(GCRS), where
40             ** the p-vector V(GCRS) is with respect to the Geocentric Celestial
41             ** Reference System (IAU, 2000) and the p-vector V(date) is with
42             ** respect to the mean equatorial triad of the given date.
43             **
44             ** Called:
45             ** eraPfw06 bias-precession F-W angles, IAU 2006
46             ** eraFw2m F-W angles to r-matrix
47             **
48             ** References:
49             **
50             ** Capitaine, N. & Wallace, P.T., 2006, Astron.Astrophys. 450, 855
51             **
52             ** Wallace, P.T. & Capitaine, N., 2006, Astron.Astrophys. 459, 981
53             **
54             ** Copyright (C) 2013-2020, NumFOCUS Foundation.
55             ** Derived, with permission, from the SOFA library. See notes at end of file.
56             */
57             {
58             double gamb, phib, psib, epsa;
59              
60              
61             /* Bias-precession Fukushima-Williams angles. */
62 184           eraPfw06(date1, date2, &gamb, &phib, &psib, &epsa);
63              
64             /* Form the matrix. */
65 184           eraFw2m(gamb, phib, psib, epsa, rbp);
66              
67 184           return;
68              
69             }
70             /*----------------------------------------------------------------------
71             **
72             **
73             ** Copyright (C) 2013-2020, NumFOCUS Foundation.
74             ** All rights reserved.
75             **
76             ** This library is derived, with permission, from the International
77             ** Astronomical Union's "Standards of Fundamental Astronomy" library,
78             ** available from http://www.iausofa.org.
79             **
80             ** The ERFA version is intended to retain identical functionality to
81             ** the SOFA library, but made distinct through different function and
82             ** file names, as set out in the SOFA license conditions. The SOFA
83             ** original has a role as a reference standard for the IAU and IERS,
84             ** and consequently redistribution is permitted only in its unaltered
85             ** state. The ERFA version is not subject to this restriction and
86             ** therefore can be included in distributions which do not support the
87             ** concept of "read only" software.
88             **
89             ** Although the intent is to replicate the SOFA API (other than
90             ** replacement of prefix names) and results (with the exception of
91             ** bugs; any that are discovered will be fixed), SOFA is not
92             ** responsible for any errors found in this version of the library.
93             **
94             ** If you wish to acknowledge the SOFA heritage, please acknowledge
95             ** that you are using a library derived from SOFA, rather than SOFA
96             ** itself.
97             **
98             **
99             ** TERMS AND CONDITIONS
100             **
101             ** Redistribution and use in source and binary forms, with or without
102             ** modification, are permitted provided that the following conditions
103             ** are met:
104             **
105             ** 1 Redistributions of source code must retain the above copyright
106             ** notice, this list of conditions and the following disclaimer.
107             **
108             ** 2 Redistributions in binary form must reproduce the above copyright
109             ** notice, this list of conditions and the following disclaimer in
110             ** the documentation and/or other materials provided with the
111             ** distribution.
112             **
113             ** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
114             ** the International Astronomical Union nor the names of its
115             ** contributors may be used to endorse or promote products derived
116             ** from this software without specific prior written permission.
117             **
118             ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
119             ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
120             ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
121             ** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
122             ** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
123             ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
124             ** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
125             ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
126             ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
127             ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
128             ** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
129             ** POSSIBILITY OF SUCH DAMAGE.
130             **
131             */