1libtraceevent(3)
2================
3
4NAME
5----
6tep_read_number - Reads a number from raw data.
7
8SYNOPSIS
9--------
10[verse]
11--
12*#include <event-parse.h>*
13
14unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_);
15--
16
17DESCRIPTION
18-----------
19The _tep_read_number()_ function reads an integer from raw data, taking into
20account the endianness of the raw data and the current host. The _tep_ argument
21is the trace event parser context. The _ptr_ is a pointer to the raw data, where
22the integer is, and the _size_ is the size of the integer.
23
24RETURN VALUE
25------------
26The _tep_read_number()_ function returns the integer in the byte order of
27the current host. In case of an error, 0 is returned.
28
29EXAMPLE
30-------
31[source,c]
32--
33#include <event-parse.h>
34...
35struct tep_handle *tep = tep_alloc();
36...
37void process_record(struct tep_record *record)
38{
39	int offset = 24;
40	int data = tep_read_number(tep, record->data + offset, 4);
41
42	/* Read the 4 bytes at the offset 24 of data as an integer */
43}
44...
45--
46
47FILES
48-----
49[verse]
50--
51*event-parse.h*
52	Header file to include in order to have access to the library APIs.
53*-ltraceevent*
54	Linker switch to add when building a program that uses the library.
55--
56
57SEE ALSO
58--------
59_libtraceevent(3)_, _trace-cmd(1)_
60
61AUTHOR
62------
63[verse]
64--
65*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
66*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
67--
68REPORTING BUGS
69--------------
70Report bugs to  <linux-trace-devel@vger.kernel.org>
71
72LICENSE
73-------
74libtraceevent is Free Software licensed under the GNU LGPL 2.1
75
76RESOURCES
77---------
78https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
79