File Coverage

erfasrc/src/gd2gc.c

Criterion	Covered	Total	%
statement	7	7	100.0
branch	3	6	50.0
condition			n/a
subroutine			n/a
pod			n/a
total	10	13	76.9

line	stmt	bran	code
1			#include "erfa.h"
2
3	11		int eraGd2gc ( int n, double elong, double phi, double height,
4			double xyz[3] )
5			/*
6			** - - - - - - - - -
7			** e r a G d 2 g c
8			** - - - - - - - - -
9			**
10			** Transform geodetic coordinates to geocentric using the specified
11			** reference ellipsoid.
12			**
13			** Given:
14			** n int ellipsoid identifier (Note 1)
15			** elong double longitude (radians, east +ve)
16			** phi double latitude (geodetic, radians, Note 3)
17			** height double height above ellipsoid (geodetic, Notes 2,3)
18			**
19			** Returned:
20			** xyz double[3] geocentric vector (Note 2)
21			**
22			** Returned (function value):
23			** int status: 0 = OK
24			** -1 = illegal identifier (Note 3)
25			** -2 = illegal case (Note 3)
26			**
27			** Notes:
28			**
29			** 1) The identifier n is a number that specifies the choice of
30			** reference ellipsoid. The following are supported:
31			**
32			** n ellipsoid
33			**
34			** 1 ERFA_WGS84
35			** 2 ERFA_GRS80
36			** 3 ERFA_WGS72
37			**
38			** The n value has no significance outside the ERFA software. For
39			** convenience, symbols ERFA_WGS84 etc. are defined in erfam.h.
40			**
41			** 2) The height (height, given) and the geocentric vector (xyz,
42			** returned) are in meters.
43			**
44			** 3) No validation is performed on the arguments elong, phi and
45			** height. An error status -1 means that the identifier n is
46			** illegal. An error status -2 protects against cases that would
47			** lead to arithmetic exceptions. In all error cases, xyz is set
48			** to zeros.
49			**
50			** 4) The inverse transformation is performed in the function eraGc2gd.
51			**
52			** Called:
53			** eraEform Earth reference ellipsoids
54			** eraGd2gce geodetic to geocentric transformation, general
55			** eraZp zero p-vector
56			**
57			** Copyright (C) 2013-2020, NumFOCUS Foundation.
58			** Derived, with permission, from the SOFA library. See notes at end of file.
59			*/
60			{
61			int j;
62			double a, f;
63
64
65			/* Obtain reference ellipsoid parameters. */
66	11		j = eraEform ( n, &a, &f );
67
68			/* If OK, transform longitude, geodetic latitude, height to x,y,z. */
69	11	50	if ( j == 0 ) {
70	11		j = eraGd2gce ( a, f, elong, phi, height, xyz );
71	11	50	if ( j != 0 ) j = -2;
72			}
73
74			/* Deal with any errors. */
75	11	50	if ( j != 0 ) eraZp ( xyz );
76
77			/* Return the status. */
78	11		return j;
79
80			}
81			/*----------------------------------------------------------------------
82			**
83			**
84			** Copyright (C) 2013-2020, NumFOCUS Foundation.
85			** All rights reserved.
86			**
87			** This library is derived, with permission, from the International
88			** Astronomical Union's "Standards of Fundamental Astronomy" library,
89			** available from http://www.iausofa.org.
90			**
91			** The ERFA version is intended to retain identical functionality to
92			** the SOFA library, but made distinct through different function and
93			** file names, as set out in the SOFA license conditions. The SOFA
94			** original has a role as a reference standard for the IAU and IERS,
95			** and consequently redistribution is permitted only in its unaltered
96			** state. The ERFA version is not subject to this restriction and
97			** therefore can be included in distributions which do not support the
98			** concept of "read only" software.
99			**
100			** Although the intent is to replicate the SOFA API (other than
101			** replacement of prefix names) and results (with the exception of
102			** bugs; any that are discovered will be fixed), SOFA is not
103			** responsible for any errors found in this version of the library.
104			**
105			** If you wish to acknowledge the SOFA heritage, please acknowledge
106			** that you are using a library derived from SOFA, rather than SOFA
107			** itself.
108			**
109			**
110			** TERMS AND CONDITIONS
111			**
112			** Redistribution and use in source and binary forms, with or without
113			** modification, are permitted provided that the following conditions
114			** are met:
115			**
116			** 1 Redistributions of source code must retain the above copyright
117			** notice, this list of conditions and the following disclaimer.
118			**
119			** 2 Redistributions in binary form must reproduce the above copyright
120			** notice, this list of conditions and the following disclaimer in
121			** the documentation and/or other materials provided with the
122			** distribution.
123			**
124			** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
125			** the International Astronomical Union nor the names of its
126			** contributors may be used to endorse or promote products derived
127			** from this software without specific prior written permission.
128			**
129			** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
130			** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
131			** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
132			** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
133			** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
134			** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
135			** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
136			** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
137			** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
138			** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
139			** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
140			** POSSIBILITY OF SUCH DAMAGE.
141			**
142			*/