(split) LDP: Update original to LDP v3.51.

[linuxjm/LDP_man-pages.git] / original / man3 / ualarm.3

diff --git a/original/man3/ualarm.3 b/original/man3/ualarm.3
index 4984a4d..7a9165c 100644 (file)
--- a/original/man3/ualarm.3
+++ b/original/man3/ualarm.3
@@ -21,7 +21,7 @@
 .\" <http://www.gnu.org/licenses/>.
 .\" %%%LICENSE_END
 .\"
-.TH UALARM 3  2010-09-20 "" "Linux Programmer's Manual"
+.TH UALARM 3  2013-04-18 "" "Linux Programmer's Manual"
 .SH NAME
 ualarm \- schedule signal after given number of microseconds
 .SH SYNOPSIS
@@ -98,6 +98,13 @@ POSIX.1-2008 removes the specification of
 .BR ualarm ().
 4.3BSD, SUSv2, and POSIX do not define any errors.
 .SH NOTES
+POSIX.1-2001 does not specify what happens if the
+.I usecs
+argument is 0.
+.\" This case is not documented in HP-US, Solar, FreeBSD, NetBSD, or OpenBSD!
+On Linux (and probably most other systems),
+the effect is to cancel any pending alarm.
+
 The type
 .I useconds_t
 is an unsigned integer type capable of holding integers