FACT++  1.0
rxp.c
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1 #include "erfa.h"
2 
3 void eraRxp(double r[3][3], double p[3], double rp[3])
4 /*
5 ** - - - - - - -
6 ** e r a R x p
7 ** - - - - - - -
8 **
9 ** Multiply a p-vector by an r-matrix.
10 **
11 ** Given:
12 ** r double[3][3] r-matrix
13 ** p double[3] p-vector
14 **
15 ** Returned:
16 ** rp double[3] r * p
17 **
18 ** Note:
19 ** It is permissible for p and rp to be the same array.
20 **
21 ** Called:
22 ** eraCp copy p-vector
23 **
24 ** Copyright (C) 2013-2015, NumFOCUS Foundation.
25 ** Derived, with permission, from the SOFA library. See notes at end of file.
26 */
27 {
28  double w, wrp[3];
29  int i, j;
30 
31 /* Matrix r * vector p. */
32  for (j = 0; j < 3; j++) {
33  w = 0.0;
34  for (i = 0; i < 3; i++) {
35  w += r[j][i] * p[i];
36  }
37  wrp[j] = w;
38  }
39 
40 /* Return the result. */
41  eraCp(wrp, rp);
42 
43  return;
44 
45 }
46 /*----------------------------------------------------------------------
47 **
48 **
49 ** Copyright (C) 2013-2015, NumFOCUS Foundation.
50 ** All rights reserved.
51 **
52 ** This library is derived, with permission, from the International
53 ** Astronomical Union's "Standards of Fundamental Astronomy" library,
54 ** available from http://www.iausofa.org.
55 **
56 ** The ERFA version is intended to retain identical functionality to
57 ** the SOFA library, but made distinct through different function and
58 ** file names, as set out in the SOFA license conditions. The SOFA
59 ** original has a role as a reference standard for the IAU and IERS,
60 ** and consequently redistribution is permitted only in its unaltered
61 ** state. The ERFA version is not subject to this restriction and
62 ** therefore can be included in distributions which do not support the
63 ** concept of "read only" software.
64 **
65 ** Although the intent is to replicate the SOFA API (other than
66 ** replacement of prefix names) and results (with the exception of
67 ** bugs; any that are discovered will be fixed), SOFA is not
68 ** responsible for any errors found in this version of the library.
69 **
70 ** If you wish to acknowledge the SOFA heritage, please acknowledge
71 ** that you are using a library derived from SOFA, rather than SOFA
72 ** itself.
73 **
74 **
75 ** TERMS AND CONDITIONS
76 **
77 ** Redistribution and use in source and binary forms, with or without
78 ** modification, are permitted provided that the following conditions
79 ** are met:
80 **
81 ** 1 Redistributions of source code must retain the above copyright
82 ** notice, this list of conditions and the following disclaimer.
83 **
84 ** 2 Redistributions in binary form must reproduce the above copyright
85 ** notice, this list of conditions and the following disclaimer in
86 ** the documentation and/or other materials provided with the
87 ** distribution.
88 **
89 ** 3 Neither the name of the Standards Of Fundamental Astronomy Board,
90 ** the International Astronomical Union nor the names of its
91 ** contributors may be used to endorse or promote products derived
92 ** from this software without specific prior written permission.
93 **
94 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
95 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
96 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
97 ** FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
98 ** COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
99 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
100 ** BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 ** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
102 ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
103 ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
104 ** ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
105 ** POSSIBILITY OF SUCH DAMAGE.
106 **
107 */
void eraRxp(double r[3][3], double p[3], double rp[3])
Definition: rxp.c:3
int i
Definition: db_dim_client.c:21
void eraCp(double p[3], double c[3])
Definition: cp.c:3