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
101
102
|
<html lang="en">
<head>
<title>Reading and writing combinations - 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 4.8">
<link title="Top" rel="start" href="index.html#Top">
<link rel="up" href="Combinations.html" title="Combinations">
<link rel="prev" href="Combination-functions.html" title="Combination functions">
<link rel="next" href="Combination-Examples.html" title="Combination Examples">
<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 The GSL Team.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.2 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 freedom to copy and modify this
GNU Manual, like GNU software.''-->
<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">
<p>
<a name="Reading-and-writing-combinations"></a>
Next: <a rel="next" accesskey="n" href="Combination-Examples.html">Combination Examples</a>,
Previous: <a rel="previous" accesskey="p" href="Combination-functions.html">Combination functions</a>,
Up: <a rel="up" accesskey="u" href="Combinations.html">Combinations</a>
<hr>
</div>
<h3 class="section">10.6 Reading and writing combinations</h3>
<p>The library provides functions for reading and writing combinations to a
file as binary data or formatted text.
<div class="defun">
— Function: int <b>gsl_combination_fwrite</b> (<var>FILE * stream, const gsl_combination * c</var>)<var><a name="index-gsl_005fcombination_005ffwrite-1046"></a></var><br>
<blockquote><p>This function writes the elements of the combination <var>c</var> to the
stream <var>stream</var> in binary format. The function returns
<code>GSL_EFAILED</code> if there was a problem writing to the file. Since the
data is written in the native binary format it may not be portable
between different architectures.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_combination_fread</b> (<var>FILE * stream, gsl_combination * c</var>)<var><a name="index-gsl_005fcombination_005ffread-1047"></a></var><br>
<blockquote><p>This function reads elements from the open stream <var>stream</var> into the
combination <var>c</var> in binary format. The combination <var>c</var> must be
preallocated with correct values of n and k since the
function uses the size of <var>c</var> to determine how many bytes to read.
The function returns <code>GSL_EFAILED</code> if there was a problem reading
from the file. The data is assumed to have been written in the native
binary format on the same architecture.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_combination_fprintf</b> (<var>FILE * stream, const gsl_combination * c, const char * format</var>)<var><a name="index-gsl_005fcombination_005ffprintf-1048"></a></var><br>
<blockquote><p>This function writes the elements of the combination <var>c</var>
line-by-line to the stream <var>stream</var> using the format specifier
<var>format</var>, which should be suitable for a type of <var>size_t</var>.
In ISO C99 the type modifier <code>z</code> represents <code>size_t</code>, so
<code>"%zu\n"</code> is a suitable format.<a rel="footnote" href="#fn-1" name="fnd-1"><sup>1</sup></a> The function returns
<code>GSL_EFAILED</code> if there was a problem writing to the file.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_combination_fscanf</b> (<var>FILE * stream, gsl_combination * c</var>)<var><a name="index-gsl_005fcombination_005ffscanf-1049"></a></var><br>
<blockquote><p>This function reads formatted data from the stream <var>stream</var> into the
combination <var>c</var>. The combination <var>c</var> must be preallocated with
correct values of n and k since the function uses the size of <var>c</var> to
determine how many numbers to read. The function returns
<code>GSL_EFAILED</code> if there was a problem reading from the file.
</p></blockquote></div>
<div class="footnote">
<hr>
<h4>Footnotes</h4><p class="footnote"><small>[<a name="fn-1" href="#fnd-1">1</a>]</small> In versions of the
GNU C library prior to the ISO C99 standard,
the type modifier <code>Z</code> was used instead.</p>
<p><hr></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>
|
