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MatMult3_33.c
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1 /************************************************************************/
2 /**
3 
4  \file MatMult3_33.c
5 
6  \version V1.7
7  \date 07.07.14
8  \brief
9 
10  \copyright (c) UCL / Dr. Andrew C. R. Martin 1991-5
11  \author Dr. Andrew C. R. Martin
12  \par
13  Institute of Structural & Molecular Biology,
14  University College London,
15  Gower Street,
16  London.
17  WC1E 6BT.
18  \par
19  andrew@bioinf.org.uk
20  andrew.martin@ucl.ac.uk
21 
22 **************************************************************************
23 
24  This code is NOT IN THE PUBLIC DOMAIN, but it may be copied
25  according to the conditions laid out in the accompanying file
26  COPYING.DOC.
27 
28  The code may be modified as required, but any modifications must be
29  documented so that the person responsible can be identified.
30 
31  The code may not be sold commercially or included as part of a
32  commercial product except as described in the file COPYING.DOC.
33 
34 **************************************************************************
35 
36  Description:
37  ============
38 
39 
40 **************************************************************************
41 
42  Usage:
43  ======
44 
45 **************************************************************************
46 
47  Revision History:
48  =================
49 - V1.0 06.09.91 Original
50 - V1.0a 01.06.92 Documented
51 - V1.1 30.09.92 Matrix multiplication added
52 - V1.2 10.06.93 void return from matrix multiplication
53 - V1.3 22.07.93 Added CreateRotMat()
54 - V1.4 03.08.93 Changed matrix multiplication to standard direction
55 - V1.5 28.07.95 Added VecDist()
56 - V1.6 27.09.95 Added MatMult33_33()
57 - V1.7 07.07.14 Use bl prefix for functions By: CTP
58 
59 *************************************************************************/
60 /* Doxygen
61  -------
62  #GROUP Maths
63  #SUBGROUP Matrices
64  #FUNCTION blMatMult3_33()
65  Multiply a 3-vector by a 3x3 matrix
66 */
67 /************************************************************************/
68 /* Includes
69 */
70 #include "MathType.h"
71 
72 /************************************************************************/
73 /* Defines and macros
74 */
75 
76 /************************************************************************/
77 /* Globals
78 */
79 
80 /************************************************************************/
81 /* Prototypes
82 */
83 
84 
85 /************************************************************************/
86 /*>void blMatMult3_33(VEC3F vecin, REAL matin[3][3], VEC3F *vecout)
87  ----------------------------------------------------------------
88 *//**
89 
90  \param[in] vecin Vector to be multiplied
91  \param[in] matin Rotation matrix
92  \param[out] *vecout Output multiplied vector
93 
94  Multiply a 3-vector by a 3x3 matrix
95 
96 - 30.09.92 Original
97 - 03.08.93 Changed multiplication to standard direction
98 - 07.07.14 Use bl prefix for functions By: CTP
99 */
100 void blMatMult3_33(VEC3F vecin,
101  REAL matin[3][3],
102  VEC3F *vecout)
103 {
104  vecout->x = vecin.x * matin[0][0] +
105  vecin.y * matin[1][0] +
106  vecin.z * matin[2][0];
107  vecout->y = vecin.x * matin[0][1] +
108  vecin.y * matin[1][1] +
109  vecin.z * matin[2][1];
110  vecout->z = vecin.x * matin[0][2] +
111  vecin.y * matin[1][2] +
112  vecin.z * matin[2][2];
113 }
114 
VEC3F::x
REAL x
Definition: MathType.h:70
blMatMult3_33
void blMatMult3_33(VEC3F vecin, REAL matin[3][3], VEC3F *vecout)
Definition: MatMult3_33.c:100
VEC3F
Definition: MathType.h:69
REAL
double REAL
Definition: MathType.h:67
MathType.h
Type definitions for maths.
VEC3F::z
REAL z
Definition: MathType.h:70
VEC3F::y
REAL y
Definition: MathType.h:70
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