LIBTRACEEVENT(3)             libtraceevent Manual             LIBTRACEEVENT(3)

NAME
       tep_is_bigendian, tep_is_local_bigendian, tep_set_local_bigendian - Get
       / set the endianness of the local machine.

SYNOPSIS
       #include <event-parse.h>

       enum tep_endian {
               TEP_LITTLE_ENDIAN = 0,
               TEP_BIG_ENDIAN
       };

       int tep_is_bigendian(void);
       bool tep_is_local_bigendian(struct tep_handle *tep);
       void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian);

DESCRIPTION
       The tep_is_bigendian() gets the endianness of the machine, executing
       the function.

       The tep_is_local_bigendian() function gets the endianness of the local
       machine, saved in the tep handler. The tep argument is the trace event
       parser context. This API is a bit faster than tep_is_bigendian(), as it
       returns cached endianness of the local machine instead of checking it
       each time.

       The tep_set_local_bigendian() function sets the endianness of the local
       machine in the tep handler. The tep argument is trace event parser
       context. The endian argument is the endianness:

                   TEP_LITTLE_ENDIAN - the machine is little endian,
                   TEP_BIG_ENDIAN - the machine is big endian.

RETURN VALUE
       The tep_is_bigendian() function returns non zero if the endianness of
       the machine, executing the code, is big endian and zero otherwise.

       The tep_is_local_bigendian() function returns true, if the endianness
       of the local machine, saved in the tep handler, is big endian, or false
       otherwise.

EXAMPLE
           #include <event-parse.h>
           ...
           struct tep_handle *tep = tep_alloc();
           ...
                   if (tep_is_bigendian())
                           tep_set_local_bigendian(tep, TEP_BIG_ENDIAN);
                   else
                           tep_set_local_bigendian(tep, TEP_LITTLE_ENDIAN);
           ...
                   if (tep_is_local_bigendian(tep))
                           printf("This machine you are running on is bigendian\n");
                   else
                           printf("This machine you are running on is little endian\n");

FILES
           event-parse.h
                   Header file to include in order to have access to the library APIs.
           -ltraceevent
                   Linker switch to add when building a program that uses the library.

SEE ALSO
       libtraceevent(3), trace-cmd(1)

AUTHOR
           Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
           Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.

REPORTING BUGS
       Report bugs to <linux-trace-devel@vger.kernel.org[3]>

LICENSE
       libtraceevent is Free Software licensed under the GNU LGPL 2.1

RESOURCES
       https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/

NOTES
        1. rostedt@goodmis.org
           mailto:rostedt@goodmis.org

        2. tz.stoyanov@gmail.com
           mailto:tz.stoyanov@gmail.com

        3. linux-trace-devel@vger.kernel.org
           mailto:linux-trace-devel@vger.kernel.org

libtraceevent                     01/13/2024                  LIBTRACEEVENT(3)