BSD 4_3_Net_2 release

[unix-history] / usr / src / share / man / man3 / assert.3

diff --git a/usr/src/share/man/man3/assert.3 b/usr/src/share/man/man3/assert.3
index bec0dfd..97384d6 100644 (file)
--- a/usr/src/share/man/man3/assert.3
+++ b/usr/src/share/man/man3/assert.3
@@ -1,40 +1,86 @@
-.\"    @(#)assert.3    6.2 (Berkeley) 5/12/86
+.\" Copyright (c) 1991 Regents of the University of California.
+.\" All rights reserved.

 .\"
 .\"

-.TH ASSERT 3 "May 12, 1986"
-.AT 3
-.SH NAME
-assert \- program verification
-.SH SYNOPSIS
-.B #include <assert.h>
-.PP
-.B assert(expression)
-.SH DESCRIPTION
-.PP
-.I Assert
-is a macro that indicates
-.I expression
-is expected to be true at this point in the program.
-It causes an
-.IR exit (2)
-with a diagnostic comment on the standard output when
-.I expression
-is false (0).
-Compiling with the 
-.IR cc (1)
-option
-.SM
-.B \-DNDEBUG
-effectively deletes
-.I assert
-from the program.
-.SH DIAGNOSTICS
-`Assertion failed: file
-.I f
-line
-.I n.'
-.I F
-is the source file and
-.I n
-the source line number of the
-.I assert
-statement.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"    This product includes software developed by the University of
+.\"    California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)assert.3   6.3 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt ASSERT 3
+.Os
+.Sh NAME
+.Nm assert
+.Nd expression verification macro
+.Sh SYNOPSIS
+.Fd #include <assert.h>
+.Fn assert expression
+.Sh DESCRIPTION
+The
+.Fn assert
+macro tests the given
+.Ar expression
+and if it is false,
+the calling process is terminated.
+A
+diagnostic message is written to the
+.Em stderr
+and the function
+.Xr _exit 2
+is called effectively terminating the program.
+.Pp
+If
+.Ar expression
+is true,
+the
+.Fn assert
+macro does nothing.
+.Pp
+The
+.Fn assert
+macro
+may be removed at compile time with
+the
+.Fl NDEBUG
+option, see
+.Xr cc 1 .
+.Sh DIAGNOSTICS
+The following diagnostic message is written to
+.Em stderr
+if
+.Ar expression
+is false:
+.Bd -literal -offset indent
+"assertion \e"%s\e" failed: file \e"%s\e", line %d\n", \e
+                   "expression", __FILE__, __LINE__);
+.Ed
+.Sh HISTORY
+The
+.Fn assert
+function is
+.Ud .