1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
<html lang="en">
<head>
<title>Matrix operations - GNU Scientific Library -- Reference Manual</title>
<meta http-equiv="Content-Type" content="text/html">
<meta name="description" content="GNU Scientific Library -- Reference Manual">
<meta name="generator" content="makeinfo 4.13">
<link title="Top" rel="start" href="index.html#Top">
<link rel="up" href="Matrices.html" title="Matrices">
<link rel="prev" href="Exchanging-rows-and-columns.html" title="Exchanging rows and columns">
<link rel="next" href="Finding-maximum-and-minimum-elements-of-matrices.html" title="Finding maximum and minimum elements of matrices">
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
<!--
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 The GSL Team.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with the
Invariant Sections being ``GNU General Public License'' and ``Free Software
Needs Free Documentation'', the Front-Cover text being ``A GNU Manual'',
and with the Back-Cover Text being (a) (see below). A copy of the
license is included in the section entitled ``GNU Free Documentation
License''.
(a) The Back-Cover Text is: ``You have the freedom to copy and modify this
GNU Manual.''-->
<meta http-equiv="Content-Style-Type" content="text/css">
<style type="text/css"><!--
pre.display { font-family:inherit }
pre.format { font-family:inherit }
pre.smalldisplay { font-family:inherit; font-size:smaller }
pre.smallformat { font-family:inherit; font-size:smaller }
pre.smallexample { font-size:smaller }
pre.smalllisp { font-size:smaller }
span.sc { font-variant:small-caps }
span.roman { font-family:serif; font-weight:normal; }
span.sansserif { font-family:sans-serif; font-weight:normal; }
--></style>
</head>
<body>
<div class="node">
<a name="Matrix-operations"></a>
<p>
Next: <a rel="next" accesskey="n" href="Finding-maximum-and-minimum-elements-of-matrices.html">Finding maximum and minimum elements of matrices</a>,
Previous: <a rel="previous" accesskey="p" href="Exchanging-rows-and-columns.html">Exchanging rows and columns</a>,
Up: <a rel="up" accesskey="u" href="Matrices.html">Matrices</a>
<hr>
</div>
<h4 class="subsection">8.4.10 Matrix operations</h4>
<p>The following operations are defined for real and complex matrices.
<div class="defun">
— Function: int <b>gsl_matrix_add</b> (<var>gsl_matrix * a, const gsl_matrix * b</var>)<var><a name="index-gsl_005fmatrix_005fadd-1014"></a></var><br>
<blockquote><p>This function adds the elements of matrix <var>b</var> to the elements of
matrix <var>a</var>. The result a(i,j) \leftarrow a(i,j) + b(i,j)
is stored in <var>a</var> and <var>b</var> remains unchanged. The two matrices
must have the same dimensions.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_matrix_sub</b> (<var>gsl_matrix * a, const gsl_matrix * b</var>)<var><a name="index-gsl_005fmatrix_005fsub-1015"></a></var><br>
<blockquote><p>This function subtracts the elements of matrix <var>b</var> from the
elements of matrix <var>a</var>. The result a(i,j) \leftarrow a(i,j)
- b(i,j) is stored in <var>a</var> and <var>b</var> remains unchanged. The two
matrices must have the same dimensions.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_matrix_mul_elements</b> (<var>gsl_matrix * a, const gsl_matrix * b</var>)<var><a name="index-gsl_005fmatrix_005fmul_005felements-1016"></a></var><br>
<blockquote><p>This function multiplies the elements of matrix <var>a</var> by the
elements of matrix <var>b</var>. The result a(i,j) \leftarrow a(i,j)
* b(i,j) is stored in <var>a</var> and <var>b</var> remains unchanged. The two
matrices must have the same dimensions.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_matrix_div_elements</b> (<var>gsl_matrix * a, const gsl_matrix * b</var>)<var><a name="index-gsl_005fmatrix_005fdiv_005felements-1017"></a></var><br>
<blockquote><p>This function divides the elements of matrix <var>a</var> by the elements
of matrix <var>b</var>. The result a(i,j) \leftarrow a(i,j) /
b(i,j) is stored in <var>a</var> and <var>b</var> remains unchanged. The two
matrices must have the same dimensions.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_matrix_scale</b> (<var>gsl_matrix * a, const double x</var>)<var><a name="index-gsl_005fmatrix_005fscale-1018"></a></var><br>
<blockquote><p>This function multiplies the elements of matrix <var>a</var> by the
constant factor <var>x</var>. The result a(i,j) \leftarrow x a(i,j)
is stored in <var>a</var>.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_matrix_add_constant</b> (<var>gsl_matrix * a, const double x</var>)<var><a name="index-gsl_005fmatrix_005fadd_005fconstant-1019"></a></var><br>
<blockquote><p>This function adds the constant value <var>x</var> to the elements of the
matrix <var>a</var>. The result a(i,j) \leftarrow a(i,j) + x is
stored in <var>a</var>.
</p></blockquote></div>
<hr>The GNU Scientific Library - a free numerical library licensed under the GNU GPL<br>Back to the <a href="/software/gsl/">GNU Scientific Library Homepage</a></body></html>
|
