.\" Copyright, the authors of the Linux man-pages project
.\"
.\" SPDX-License-Identifier: Linux-man-pages-copyleft
.\"
.TH PR_GET_ENDIAN 2const 2025-09-06 "Linux man-pages 6.16"
.SH NAME
PR_GET_ENDIAN
\-
get the endianness of the calling process
.SH LIBRARY
Standard C library
.RI ( libc ,\~ \-lc )
.SH SYNOPSIS
.nf
.BR "#include <linux/prctl.h>" "  /* Definition of " PR_* " constants */"
.B #include <sys/prctl.h>
.P
.BI "int prctl(PR_GET_ENDIAN, int *" endianness );
.fi
.SH DESCRIPTION
Return the endianness of the calling process,
in the location pointed to by
.IR endianness .
.SH RETURN VALUE
On success,
0 is returned.
On error, \-1 is returned, and
.I errno
is set to indicate the error.
.SH ERRORS
.TP
.B EFAULT
.I endianness
is an invalid address.
.SH STANDARDS
Linux.
PowerPC only.
.SH HISTORY
Linux 2.6.18 (PowerPC).
.SH SEE ALSO
.BR prctl (2),
.BR PR_SET_ENDIAN (2const)