initial import of NetBSD tree

8 files changed, 1335 insertions, 0 deletions

diff --git a/share/man/man3/Makefile b/share/man/man3/Makefile
new file mode 100644
index 00000000000..f36b558fbfd
--- /dev/null
+++ b/share/man/man3/Makefile
@@ -0,0 +1,22 @@
+#	$NetBSD: Makefile,v 1.10 1995/10/06 07:21:58 thorpej Exp $
+#	@(#)Makefile	8.2 (Berkeley) 12/13/93
+
+MAN=	assert.3 bitstring.3 dlfcn.3 end.3 intro.3 queue.3 stdarg.3
+MLINKS+=end.3 edata.3 end.3 etext.3
+MLINKS+=queue.3 list_entry.3 queue.3 list_head.3 queue.3 list_init.3
+MLINKS+=queue.3 list_insert_after.3 queue.3 list_insert_before.3
+MLINKS+=queue.3 list_insert_head.3
+MLINKS+=queue.3 list_remove.3 queue.3 tailq_entry.3 queue.3 tailq_head.3
+MLINKS+=queue.3 tailq_init.3 queue.3 tailq_insert_after.3
+MLINKS+=queue.3 tailq_insert_before.3
+MLINKS+=queue.3 tailq_insert_head.3 queue.3 tailq_insert_tail.3
+MLINKS+=queue.3 tailq_remove.3 queue.3 circleq_entry.3 queue.3 circleq_head.3
+MLINKS+=queue.3 circleq_init.3 queue.3 circleq_insert_after.3
+MLINKS+=queue.3 circleq_insert_before.3 queue.3 circleq_insert_head.3
+MLINKS+=queue.3 circleq_insert_tail.3 queue.3 circleq_remove.3
+MLINKS+=stdarg.3 varargs.3 stdarg.3 va_arg.3 stdarg.3 va_end.3
+MLINKS+=stdarg.3 va_start.3
+MLINKS+=dlfcn.3 dlopen.3 dlfcn.3 dlclose.3 dlfcn.3 dlsym.3 dlfcn.3 dlctl.3 \
+	dlfcn.3 dlerror.3
+
+.include <bsd.prog.mk>
diff --git a/share/man/man3/assert.3 b/share/man/man3/assert.3
new file mode 100644
index 00000000000..af51048f4d3
--- /dev/null
+++ b/share/man/man3/assert.3
@@ -0,0 +1,96 @@
+.\"	$NetBSD: assert.3,v 1.5 1994/11/30 15:24:30 jtc Exp $
+.\"
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" 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	8.1 (Berkeley) 6/9/93
+.\"
+.Dd June 9, 1993
+.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
+.Em stderr
+and the
+.Xr abort 3
+function 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
+.Xr cc 1
+option
+.Fl DNDEBUG .
+.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\en", \e
+		    "expression", __FILE__, __LINE__);
+.Ed
+.Sh SEE ALSO
+.Xr cc 1 ,
+.Xr abort 3
+.Sh STANDARDS
+The
+.Fn assert
+macro conforms to
+.St -ansiC .
+.Sh HISTORY
+A
+.Nm assert
+macro appeared in
+.At v6 .
diff --git a/share/man/man3/bitstring.3 b/share/man/man3/bitstring.3
new file mode 100644
index 00000000000..4257c54578d
--- /dev/null
+++ b/share/man/man3/bitstring.3
@@ -0,0 +1,181 @@
+.\"	$NetBSD: bitstring.3,v 1.4 1994/11/30 15:24:31 jtc Exp $
+.\"
+.\" Copyright (c) 1989, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Paul Vixie.
+.\" 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.
+.\"
+.\"     @(#)bitstring.3	8.1 (Berkeley) 7/19/93
+.\"
+.Dd July 19, 1993
+.Dt BITSTRING 3
+.Os BSD 4
+.Sh NAME
+.Nm bit_alloc ,
+.Nm bit_clear ,
+.Nm bit_decl ,
+.Nm bit_ffs ,
+.Nm bit_nclear ,
+.Nm bit_nset,
+.Nm bit_set ,
+.Nm bitstr_size ,
+.Nm bit_test
+.Nd bit-string manipulation macros
+.Sh SYNOPSIS
+.Fd #include <bitstring.h>
+.Ft bitstr_t *
+.Fn bit_alloc "int nbits"
+.Fn bit_decl "bit_str name" "int nbits"
+.Fn bit_clear "bit_str name" "int bit"
+.Fn bit_ffc "bit_str name" "int nbits" "int *value"
+.Fn bit_ffs "bit_str name" "int nbits" "int *value"
+.Fn bit_nclear "bit_str name" "int start" "int stop"
+.Fn bit_nset "bit_str name" "int start" "int stop"
+.Fn bit_set "bit_str name" "int bit"
+.Fn bitstr_size "int nbits"
+.Fn bit_test "bit_str name" "int bit"
+.Sh DESCRIPTION
+These macros operate on strings of bits.
+.Pp
+The macro
+.Fn bit_alloc
+returns a pointer of type
+.Dq Fa "bitstr_t *"
+to sufficient space to store
+.Fa nbits
+bits, or
+.Dv NULL
+if no space is available.
+.Pp
+The macro
+.Fn bit_decl
+allocates sufficient space to store
+.Fa nbits
+bits on the stack.
+.Pp
+The macro
+.Fn bitstr_size
+returns the number of elements of type
+.Fa bitstr_t
+necessary to store
+.Fa nbits
+bits.
+This is useful for copying bit strings.
+.Pp
+The macros
+.Fn bit_clear
+and
+.Fn bit_set
+clear or set the zero-based numbered bit
+.Fa bit ,
+in the bit string
+.Ar name .
+.Pp
+The
+.Fn bit_nset
+and
+.Fn bit_nclear
+macros
+set or clear the zero-based numbered bits from
+.Fa start
+to
+.Fa stop
+in the bit string
+.Ar name .
+.Pp
+The
+.Fn bit_test
+macro
+evaluates to non-zero if the zero-based numbered bit
+.Fa bit
+of bit string
+.Fa name
+is set, and zero otherwise.
+.Pp
+The
+.Fn bit_ffs
+macro
+stores in the location referenced by
+.Fa value
+the zero-based number of the first bit set in the array of
+.Fa nbits
+bits referenced by
+.Fa name .
+If no bits are set, the location referenced by
+.Fa value
+is set to \-1.
+.Pp
+The macro
+.Fn bit_ffc
+stores in the location referenced by
+.Fa value
+the zero-based number of the first bit not set in the array of
+.Fa nbits
+bits referenced by
+.Fa name .
+If all bits are set, the location referenced by
+.Fa value
+is set to \-1.
+.Pp
+The arguments to these macros are evaluated only once and may safely
+have side effects.
+.Sh EXAMPLE
+.Bd -literal -offset indent
+#include <limits.h>
+#include <bitstring.h>
+
+...
+#define	LPR_BUSY_BIT		0
+#define	LPR_FORMAT_BIT		1
+#define	LPR_DOWNLOAD_BIT	2
+...
+#define	LPR_AVAILABLE_BIT	9
+#define	LPR_MAX_BITS		10
+
+make_lpr_available()
+{
+	bitstr_t bit_decl(bitlist, LPR_MAX_BITS);
+	...
+	bit_nclear(bitlist, 0, LPR_MAX_BITS - 1);
+	...
+	if (!bit_test(bitlist, LPR_BUSY_BIT)) {
+		bit_clear(bitlist, LPR_FORMAT_BIT);
+		bit_clear(bitlist, LPR_DOWNLOAD_BIT);
+		bit_set(bitlist, LPR_AVAILABLE_BIT);
+	}
+}
+.Ed
+.Sh SEE ALSO
+.Xr malloc 3
+.Sh HISTORY
+The
+.Nm bitstring
+functions first appeared in 4.4BSD.
diff --git a/share/man/man3/dlfcn.3 b/share/man/man3/dlfcn.3
new file mode 100644
index 00000000000..3c36a96bbee
--- /dev/null
+++ b/share/man/man3/dlfcn.3
@@ -0,0 +1,119 @@
+.\"	$NetBSD: dlfcn.3,v 1.2 1995/10/01 18:47:23 pk Exp $
+.\"
+.\" Copyright (c) 1995 Paul Kranenburg
+.\" All rights reserved.
+.\"
+.\" 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 Paul Kranenburg.
+.\" 3. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+.\"
+.Dd September 30, 1995
+.Dt DLFCN 3
+.Os
+.Sh NAME
+.Nm dlopen
+.Nm dlclose
+.Nm dlsym
+.Nm dlctl
+.Nm dlerror
+.Nd dynamic link interface
+.Sh SYNOPSIS
+.Fd #include <dlfcn.h>
+.Ft "void *"
+.Fn dlopen "char *path" "int mode"
+.Ft "int"
+.Fn dlclose "void *handle"
+.Ft "void *"
+.Fn dlsym "void *handle" "char *symbol"
+.Ft "int"
+.Fn dlctl "void *handle" "int cmd" "void *data"
+.Ft "char *"
+.Fn dlerror "void"
+.Sh DESCRIPTION
+These functions provide an interface to the run-time linker
+.Xr ld.so .
+They allow new shared objects to be loaded into the process' address space
+under program control.
+The
+.Fn dlopen
+function takes a pathname of a shared object as the first argument. The
+shared object is mapped into the address space, relocated and its external
+references are resolved in the same way as is done with the implicitly loaded
+shared libraries at program startup.
+The second argument has currently no effect, but should be set to
+.Dv DL_LAZY
+for future compatibility.
+.Fn dlopen
+returns a handle to be used in calls to
+.Fn dlclose ,
+.Fn dlsym
+and
+.Fn dlctl .
+If the named shared object has already
+been loaded by a previous call to
+.Fn dlopen
+.Pq and not yet unloaded by Fn dlclose ,
+a handle refering to the resident copy is returned.
+.Pp
+.Fn dlclose
+unlinks and removes the object referred to by
+.Fa handle
+from the process address space. If multiple calls to
+.fn dlopen
+have been done on this object
+.Po or the object was one loaded at startup time
+.Pc
+the object is removed when its reference count drops to zero.
+.Pp
+.Fn dlsym
+looks for a definition of
+.Fa symbol
+in the shared object designated by
+.Fa handle .
+The symbols address is returned. If the symbol cannot be resolved,
+.Dv NULL
+is returned.
+.Pp
+.Fn dlctl
+provides an interface similar to
+.Xr ioctl 2
+to control several aspects of the run-time linker's operation. This interface
+is
+.Ud .
+.Pp
+.Fn dlerror
+return a character string representing the most recent error that has
+occurred while processing one of the other functions described here.
+.Sh SEE ALSO
+.Xr ld 1 ,
+.Xr rtld 1 ,
+.Xr link 5
+.Sh HISTORY
+Some of the
+.Nm dl*
+functions first appeared in SunOS 4.
+.Sh BUGS
+An error that occurs while processing a
+.Fn dlopen
+request results in the termination of the program.
diff --git a/share/man/man3/end.3 b/share/man/man3/end.3
new file mode 100644
index 00000000000..ddb5e5af8e2
--- /dev/null
+++ b/share/man/man3/end.3
@@ -0,0 +1,69 @@
+.\"	$NetBSD: end.3,v 1.4 1994/11/30 15:24:33 jtc Exp $
+.\"
+.\" Copyright (c) 1986
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" 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.
+.\"
+.\"	@(#)end.3	6.4 (Berkeley) 1/24/94
+.\"
+.Dd January 24, 1994
+.Dt END 3
+.Os
+.Sh NAME
+.Nm end ,
+.Nm etext ,
+.Nm edata
+.Nd end boundaries of image segments
+.Sh SYNOPSIS
+.Vt extern end;
+.Vt extern etext;
+.Vt extern edata;
+.Sh DESCRIPTION
+The global variables
+.Va end , etext
+and
+.Va edata
+correspond to the
+the next address following the end
+of the text segment,
+the initialized data segment and the
+end of the data segment
+.Pq Tn BSS .
+These values are initially set at execution time
+by
+.Xr brk 2 .
+.Sh SEE ALSO
+.Xr brk 2 ,
+.Xr malloc 3
+.Sh HISTORY
+A
+.Nm end
+manual appeared in
+.At v6 .
diff --git a/share/man/man3/intro.3 b/share/man/man3/intro.3
new file mode 100644
index 00000000000..0da783993ce
--- /dev/null
+++ b/share/man/man3/intro.3
@@ -0,0 +1,161 @@
+.\"	$NetBSD: intro.3,v 1.5 1995/05/10 22:46:24 jtc Exp $
+.\"
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" 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.
+.\"
+.\"     @(#)intro.3	8.1 (Berkeley) 6/5/93
+.\"
+.Dd June 5, 1993
+.Dt INTRO 3
+.Os BSD 4
+.Sh NAME
+.Nm intro
+.Nd introduction to the C libraries
+.Sh DESCRIPTION
+This section provides an overview of the C
+library functions, their error returns and other
+common definitions and concepts.
+Most of these functions are available from the C library,
+.Em libc .
+Other libraries, such as the math library,
+.Em libm ,
+must be indicated at compile time with the
+.Fl l
+option of the compiler.
+.\" .Pp
+.\" A subset of the
+.\" .Xr libc functions
+.\" are available from Fortran;
+.\" they are described separately in
+.\" .Xr intro 3f .
+.Pp
+The various libraries (followed by the loader flag):
+.Bl -tag -width "libc (-lc)"
+.It Xr libc Pq Fl l Ns Ar c
+Standard C library functions. 
+When using the C compiler
+.Xr cc 1 ,
+it is not necessary
+to supply the loader flag
+.Fl l Ns Ar c
+for these functions.
+There are several `libraries' or groups of functions included inside of
+.Xr libc : the standard
+.Tn I/O
+routines,
+database routines,
+bit operators,
+string operators,
+character tests and character operators,
+des encryption routines,
+storage allocation, time functions, signal handling and more.
+.It Xo
+.Xr libcurses
+.Pf ( Fl l Ns Ar curses
+.Fl l Ns Ar termcap )
+.Xc
+Terminal independent screen management routines
+for two dimensional non-bitmap display terminals.
+(See
+.Xr curses 3 . )
+.It Xr libcompat Pq Fl l Ns Ar compat
+Functions which are obsolete but are available for compatibility with
+.Bx 4.3 .
+In particular,
+a number of system call interfaces provided in previous releases of
+.Bx
+have been included for source code compatibility.
+Use of these routines should, for the most part, be avoided.
+The manual page entry for each compatibility routine
+indicates the proper interface to use. 
+.\" .It Xr libkvm
+.It Xr libl Pq Fl l Ns Ar l
+The library for
+.Xr lex 1 .
+.\" .It Xr libln
+.It Xr libm Pq Fl l Ns Ar m
+The math library,
+.Em libm .
+.\" The math library is loaded as needed by the Pascal compiler
+.\" .Xr pc 1 ,
+.\" but not by the C compiler which requires the
+.\" .Fl l Ns Ar m
+.\" flag.
+.\" (See
+.\" .Xr math 3 . )
+.\" .It Xr libmp Pq Fl l Ns Ar mp
+.\" .It Xr libom
+.\" Old math library.
+.\" .It Xr libplot Pq Fl l Ns Ar plot
+.\" Device independent plotting functions. 
+.\" (See
+.\" .Xr plot 3 . )
+.\" .It Xr libplotf77 Pq Fl l Ns Ar plotf77
+.\" The device independent plotting functions for fortran. 
+.\" (See
+.\" .Xr plot 3 . )
+.\" .It Xr libresolv Pq Fl l Ns Ar resolv
+.\" Routines for network address resolution.
+.It Xr libtermcap Pq Fl l Ns Ar termcap
+The terminal independent operation library package. (See
+.Xr termcap 3 . )
+.\" .It libvt0.a
+.It Xr liby Pq Fl l Ns Ar y
+The library for
+.Xr yacc 1 .
+.El
+.Sh FILES
+.Bl -tag -width /usr/lib/libm_p.a -compact
+.It Pa /usr/lib/libc.a
+the C library
+.It Pa /usr/lib/libm.a
+the math library
+.It Pa /usr/lib/libc_p.a
+the C library compiled for profiling
+.It Pa /usr/lib/libm_p.a
+the math library compiled for profiling
+.El
+.Sh SEE ALSO
+.Xr stdio 3 ,
+.Xr math 3 ,
+.Xr intro 2 ,
+.Xr cc 1 ,
+.Xr ld 1 ,
+.Xr nm 1
+.\" .Sh LIST OF FUNCTIONS
+.\" .Bl -column "strncasecmpxxx" "system"
+.\" .Sy Name	Description
+.\" .El
+.Sh HISTORY
+An
+.Nm intro
+manual appeared in
+.At v7 .
diff --git a/share/man/man3/queue.3 b/share/man/man3/queue.3
new file mode 100644
index 00000000000..6f0b73def4e
--- /dev/null
+++ b/share/man/man3/queue.3
@@ -0,0 +1,480 @@
+.\"	$NetBSD: queue.3,v 1.4 1995/07/03 00:25:36 mycroft Exp $
+.\"
+.\" Copyright (c) 1993 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" 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.
+.\"
+.\"	@(#)queue.3	8.1 (Berkeley) 12/13/93
+.\"
+.Dd "December 13, 1993"
+.Dt QUEUE 3
+.Os BSD 4
+.Sh NAME
+.Nm LIST_ENTRY ,
+.Nm LIST_HEAD ,
+.Nm LIST_INIT ,
+.Nm LIST_INSERT_AFTER ,
+.Nm LIST_INSERT_BEFORE ,
+.Nm LIST_INSERT_HEAD ,
+.Nm LIST_REMOVE ,
+.Nm TAILQ_ENTRY ,
+.Nm TAILQ_HEAD ,
+.Nm TAILQ_INIT ,
+.Nm TAILQ_INSERT_AFTER ,
+.Nm TAILQ_INSERT_BEFORE ,
+.Nm TAILQ_INSERT_HEAD ,
+.Nm TAILQ_INSERT_TAIL ,
+.Nm TAILQ_REMOVE ,
+.Nm CIRCLEQ_ENTRY ,
+.Nm CIRCLEQ_HEAD ,
+.Nm CIRCLEQ_INIT ,
+.Nm CIRCLEQ_INSERT_AFTER ,
+.Nm CIRCLEQ_INSERT_BEFORE ,
+.Nm CIRCLEQ_INSERT_HEAD ,
+.Nm CIRCLEQ_INSERT_TAIL ,
+.Nm CIRCLEQ_REMOVE
+.Nd implementations of lists, tail queues, and circular queues
+.Sh SYNOPSIS
+.Fd #include <sys/queue.h>
+.sp
+.Fn LIST_ENTRY "TYPE"
+.Fn LIST_HEAD "HEADNAME" "TYPE"
+.Fn LIST_INIT "LIST_HEAD *head"
+.Fn LIST_INSERT_AFTER "TYPE *listelm" "TYPE *elm" "LIST_ENTRY NAME"
+.Fn LIST_INSERT_BEFORE "TYPE *listelm" "TYPE *elm" "LIST_ENTRY NAME"
+.Fn LIST_INSERT_HEAD "LIST_HEAD *head" "TYPE *elm" "LIST_ENTRY NAME"
+.Fn LIST_REMOVE "TYPE *elm" "LIST_ENTRY NAME"
+.sp
+.Fn TAILQ_ENTRY "TYPE"
+.Fn TAILQ_HEAD "HEADNAME" "TYPE"
+.Fn TAILQ_INIT "TAILQ_HEAD *head"
+.Fn TAILQ_INSERT_AFTER "TAILQ_HEAD *head" "TYPE *listelm" "TYPE *elm" "TAILQ_ENTRY NAME"
+.Fn TAILQ_INSERT_BEFORE "TYPE *listelm" "TYPE *elm" "TAILQ_ENTRY NAME"
+.Fn TAILQ_INSERT_HEAD "TAILQ_HEAD *head" "TYPE *elm" "TAILQ_ENTRY NAME"
+.Fn TAILQ_INSERT_TAIL "TAILQ_HEAD *head" "TYPE *elm" "TAILQ_ENTRY NAME"
+.Fn TAILQ_REMOVE "TAILQ_HEAD *head" "TYPE *elm" "TAILQ_ENTRY NAME"
+.sp
+.Fn CIRCLEQ_ENTRY "TYPE"
+.Fn CIRCLEQ_HEAD "HEADNAME" "TYPE"
+.Fn CIRCLEQ_INIT "CIRCLEQ_HEAD *head"
+.Fn CIRCLEQ_INSERT_AFTER "CIRCLEQ_HEAD *head" "TYPE *listelm" "TYPE *elm" "CIRCLEQ_ENTRY NAME"
+.Fn CIRCLEQ_INSERT_BEFORE "CIRCLEQ_HEAD *head" "TYPE *listelm" "TYPE *elm" "CIRCLEQ_ENTRY NAME"
+.Fn CIRCLEQ_INSERT_HEAD "CIRCLEQ_HEAD *head" "TYPE *elm" "CIRCLEQ_ENTRY NAME"
+.Fn CIRCLEQ_INSERT_TAIL "CIRCLEQ_HEAD *head" "TYPE *elm" "CIRCLEQ_ENTRY NAME"
+.Fn CIRCLEQ_REMOVE "CIRCLEQ_HEAD *head" "TYPE *elm" "CIRCLEQ_ENTRY NAME"
+.Sh DESCRIPTION
+These macros define and operate on three types of data structures:
+lists, tail queues, and circular queues.
+All three structures support the following functionality:
+.Bl -enum -compact -offset indent
+.It
+Insertion of a new entry at the head of the list.
+.It
+Insertion of a new entry before or after any element in the list.
+.It
+Removal of any entry in the list.
+.It
+Forward traversal through the list.
+.El
+.Pp
+Lists are the simplest of the three data structures and support
+only the above functionality.
+.Pp
+Tail queues add the following functionality:
+.Bl -enum -compact -offset indent
+.It
+Entries can be added at the end of a list.
+.El
+However:
+.Bl -enum -compact -offset indent
+.It
+All list insertions and removals, except insertion before another element, must
+specify the head of the list.
+.It
+Each head entry requires two pointers rather than one.
+.It
+Code size is about 15% greater and operations run about 20% slower
+than lists.
+.El
+.Pp
+Circular queues add the following functionality:
+.Bl -enum -compact -offset indent
+.It
+Entries can be added at the end of a list.
+.It
+They may be traversed backwards, from tail to head.
+.El
+However:
+.Bl -enum -compact -offset indent
+.It
+All list insertions and removals must specify the head of the list.
+.It
+Each head entry requires two pointers rather than one.
+.It
+The termination condition for traversal is more complex.
+.It
+Code size is about 40% greater and operations run about 45% slower
+than lists.
+.El
+.Pp
+In the macro definitions,
+.Fa TYPE
+is the name of a user defined structure,
+that must contain a field of type
+.Li LIST_ENTRY ,
+.Li TAILQ_ENTRY ,
+or
+.Li CIRCLEQ_ENTRY ,
+named
+.Fa NAME .
+The argument
+.Fa HEADNAME
+is the name of a user defined structure that must be declared
+using the macros
+.Li LIST_HEAD ,
+.Li TAILQ_HEAD ,
+or
+.Li CIRCLEQ_HEAD .
+See the examples below for further explanation of how these
+macros are used.
+.Sh LISTS
+A list is headed by a structure defined by the
+.Nm LIST_HEAD
+macro.
+This structure contains a single pointer to the first element
+on the list.
+The elements are doubly linked so that an arbitrary element can be
+removed without traversing the list.
+New elements can be added to the list after an existing element,
+before an existing element, or at the head of the list.
+A
+.Fa LIST_HEAD
+structure is declared as follows:
+.Bd -literal -offset indent
+LIST_HEAD(HEADNAME, TYPE) head;
+.Ed
+.sp
+where
+.Fa HEADNAME
+is the name of the structure to be defined, and
+.Fa TYPE
+is the type of the elements to be linked into the list.
+A pointer to the head of the list can later be declared as:
+.Bd -literal -offset indent
+struct HEADNAME *headp;
+.Ed
+.sp
+(The names
+.Li head
+and
+.Li headp
+are user selectable.)
+.Pp
+The macro
+.Nm LIST_ENTRY
+declares a structure that connects the elements in
+the list.
+.Pp
+The macro
+.Nm LIST_INIT
+initializes the list referenced by
+.Fa head .
+.Pp
+The macro
+.Nm LIST_INSERT_HEAD
+inserts the new element
+.Fa elm
+at the head of the list.
+.Pp
+The macro
+.Nm LIST_INSERT_AFTER
+inserts the new element
+.Fa elm
+after the element
+.Fa listelm .
+.Pp
+The macro
+.Nm LIST_INSERT_BEFORE
+inserts the new element
+.Fa elm
+before the element
+.Fa listelm .
+.Pp
+The macro
+.Nm LIST_REMOVE
+removes the element
+.Fa elm
+from the list.
+.Sh LIST EXAMPLE
+.Bd -literal
+LIST_HEAD(listhead, entry) head;
+struct listhead *headp;		/* List head. */
+struct entry {
+	...
+	LIST_ENTRY(entry) entries;	/* List. */
+	...
+} *n1, *n2, *np;
+
+LIST_INIT(&head);			/* Initialize the list. */
+
+n1 = malloc(sizeof(struct entry));	/* Insert at the head. */
+LIST_INSERT_HEAD(&head, n1, entries);
+
+n2 = malloc(sizeof(struct entry));	/* Insert after. */
+LIST_INSERT_AFTER(n1, n2, entries);
+
+n2 = malloc(sizeof(struct entry));	/* Insert before. */
+LIST_INSERT_BEFORE(n1, n2, entries);
+					/* Forward traversal. */
+for (np = head.lh_first; np != NULL; np = np->entries.le_next)
+	np-> ...
+
+while (head.lh_first != NULL)		/* Delete. */
+	LIST_REMOVE(head.lh_first, entries);
+.Ed
+.Sh TAIL QUEUES
+A tail queue is headed by a structure defined by the
+.Nm TAILQ_HEAD
+macro.
+This structure contains a pair of pointers,
+one to the first element in the tail queue and the other to
+the last element in the tail queue.
+The elements are doubly linked so that an arbitrary element can be
+removed without traversing the tail queue.
+New elements can be added to the queue after an existing element,
+before an existing element, at the head of the queue, or at the end
+the queue.
+A
+.Fa TAILQ_HEAD
+structure is declared as follows:
+.Bd -literal -offset indent
+TAILQ_HEAD(HEADNAME, TYPE) head;
+.Ed
+.sp
+where
+.Li HEADNAME
+is the name of the structure to be defined, and
+.Li TYPE
+is the type of the elements to be linked into the tail queue.
+A pointer to the head of the tail queue can later be declared as:
+.Bd -literal -offset indent
+struct HEADNAME *headp;
+.Ed
+.sp
+(The names
+.Li head
+and
+.Li headp
+are user selectable.)
+.Pp
+The macro
+.Nm TAILQ_ENTRY
+declares a structure that connects the elements in
+the tail queue.
+.Pp
+The macro
+.Nm TAILQ_INIT
+initializes the tail queue referenced by
+.Fa head .
+.Pp
+The macro
+.Nm TAILQ_INSERT_HEAD
+inserts the new element
+.Fa elm
+at the head of the tail queue.
+.Pp
+The macro
+.Nm TAILQ_INSERT_TAIL
+inserts the new element
+.Fa elm
+at the end of the tail queue.
+.Pp
+The macro
+.Nm TAILQ_INSERT_AFTER
+inserts the new element
+.Fa elm
+after the element
+.Fa listelm .
+.Pp
+The macro
+.Nm TAILQ_INSERT_BEFORE
+inserts the new element
+.Fa elm
+before the element
+.Fa listelm .
+.Pp
+The macro
+.Nm TAILQ_REMOVE
+removes the element
+.Fa elm
+from the tail queue.
+.Sh TAIL QUEUE EXAMPLE
+.Bd -literal
+TAILQ_HEAD(tailhead, entry) head;
+struct tailhead *headp;		/* Tail queue head. */
+struct entry {
+	...
+	TAILQ_ENTRY(entry) entries;	/* Tail queue. */
+	...
+} *n1, *n2, *np;
+
+TAILQ_INIT(&head);			/* Initialize the queue. */
+
+n1 = malloc(sizeof(struct entry));	/* Insert at the head. */
+TAILQ_INSERT_HEAD(&head, n1, entries);
+
+n1 = malloc(sizeof(struct entry));	/* Insert at the tail. */
+TAILQ_INSERT_TAIL(&head, n1, entries);
+
+n2 = malloc(sizeof(struct entry));	/* Insert after. */
+TAILQ_INSERT_AFTER(&head, n1, n2, entries);
+
+n2 = malloc(sizeof(struct entry));	/* Insert before. */
+TAILQ_INSERT_BEFORE(n1, n2, entries);
+					/* Forward traversal. */
+for (np = head.tqh_first; np != NULL; np = np->entries.tqe_next)
+	np-> ...
+					/* Delete. */
+while (head.tqh_first != NULL)
+	TAILQ_REMOVE(&head, head.tqh_first, entries);
+.Ed
+.Sh CIRCULAR QUEUES
+A circular queue is headed by a structure defined by the
+.Nm CIRCLEQ_HEAD
+macro.
+This structure contains a pair of pointers,
+one to the first element in the circular queue and the other to the
+last element in the circular queue.
+The elements are doubly linked so that an arbitrary element can be
+removed without traversing the queue.
+New elements can be added to the queue after an existing element,
+before an existing element, at the head of the queue, or at the end
+of the queue.
+A
+.Fa CIRCLEQ_HEAD
+structure is declared as follows:
+.Bd -literal -offset indent
+CIRCLEQ_HEAD(HEADNAME, TYPE) head;
+.Ed
+.sp
+where
+.Li HEADNAME
+is the name of the structure to be defined, and
+.Li TYPE
+is the type of the elements to be linked into the circular queue.
+A pointer to the head of the circular queue can later be declared as:
+.Bd -literal -offset indent
+struct HEADNAME *headp;
+.Ed
+.sp
+(The names
+.Li head
+and
+.Li headp
+are user selectable.)
+.Pp
+The macro
+.Nm CIRCLEQ_ENTRY
+declares a structure that connects the elements in
+the circular queue.
+.Pp
+The macro
+.Nm CIRCLEQ_INIT
+initializes the circular queue referenced by
+.Fa head .
+.Pp
+The macro
+.Nm CIRCLEQ_INSERT_HEAD
+inserts the new element
+.Fa elm
+at the head of the circular queue.
+.Pp
+The macro
+.Nm CIRCLEQ_INSERT_TAIL
+inserts the new element
+.Fa elm
+at the end of the circular queue.
+.Pp
+The macro
+.Nm CIRCLEQ_INSERT_AFTER
+inserts the new element
+.Fa elm
+after the element
+.Fa listelm .
+.Pp
+The macro
+.Nm CIRCLEQ_INSERT_BEFORE
+inserts the new element
+.Fa elm
+before the element
+.Fa listelm .
+.Pp
+The macro
+.Nm CIRCLEQ_REMOVE
+removes the element
+.Fa elm
+from the circular queue.
+.Sh CIRCULAR QUEUE EXAMPLE
+.Bd -literal
+CIRCLEQ_HEAD(circleq, entry) head;
+struct circleq *headp;			/* Circular queue head. */
+struct entry {
+	...
+	CIRCLEQ_ENTRY entries;		/* Circular queue. */
+	...
+} *n1, *n2, *np;
+
+CIRCLEQ_INIT(&head);			/* Initialize the circular queue. */
+
+n1 = malloc(sizeof(struct entry));	/* Insert at the head. */
+CIRCLEQ_INSERT_HEAD(&head, n1, entries);
+
+n1 = malloc(sizeof(struct entry));	/* Insert at the tail. */
+CIRCLEQ_INSERT_TAIL(&head, n1, entries);
+
+n2 = malloc(sizeof(struct entry));	/* Insert after. */
+CIRCLEQ_INSERT_AFTER(&head, n1, n2, entries);
+
+n2 = malloc(sizeof(struct entry));	/* Insert before. */
+CIRCLEQ_INSERT_BEFORE(&head, n1, n2, entries);
+					/* Forward traversal. */
+for (np = head.cqh_first; np != (void *)&head; np = np->entries.cqe_next)
+	np-> ...
+					/* Reverse traversal. */
+for (np = head.cqh_last; np != (void *)&head; np = np->entries.cqe_prev)
+	np-> ...
+					/* Delete. */
+while (head.cqh_first != (void *)&head)
+	CIRCLEQ_REMOVE(&head, head.cqh_first, entries);
+.Ed
+.Sh HISTORY
+The
+.Nm queue
+functions first appeared in 4.4BSD.
diff --git a/share/man/man3/stdarg.3 b/share/man/man3/stdarg.3
new file mode 100644
index 00000000000..a0582655dd1
--- /dev/null
+++ b/share/man/man3/stdarg.3
@@ -0,0 +1,207 @@
+.\"	$NetBSD: stdarg.3,v 1.3 1994/11/30 15:24:37 jtc Exp $
+.\"
+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" 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.
+.\"
+.\"	@(#)stdarg.3	8.1 (Berkeley) 6/5/93
+.\"
+.Dd June 5, 1993
+.Dt STDARG 3
+.Os
+.Sh NAME
+.Nm stdarg
+.Nd variable argument lists
+.Sh SYNOPSIS
+.Fd #include <stdarg.h>
+.Ft void
+.Fn va_start "va_list ap" last
+.Ft type
+.Fn va_arg "va_list ap" type
+.Ft void
+.Fn va_end "va_list ap"
+.Sh DESCRIPTION
+A function may be called with a varying number of arguments of varying
+types.
+The include file
+.Aq Pa stdarg.h
+declares a type
+.Pq Em va_list
+and defines three macros for stepping
+through a list of arguments whose number and types are not known to
+the called function.
+.Pp
+The called function must declare an object of type
+.Em va_list
+which is used by the macros
+.Fn va_start ,
+.Fn va_arg ,
+and
+.Fn va_end .
+.Pp
+The
+.Fn va_start
+macro initializes
+.Fa ap
+for subsequent use by
+.Fn va_arg
+and
+.Fn va_end ,
+and must be called first.
+.Pp
+The parameter
+.Fa last
+is the name of the last parameter before the variable argument list,
+i.e. the last parameter of which the calling function knows the type.
+.Pp
+Because the address of this parameter is used in the
+.Fn va_start
+macro, it should not be declared as a register variable, or as a
+function or an array type.
+.Pp
+The
+.Fn va_start
+macro returns no value.
+.Pp
+The
+.Fn va_arg
+macro expands to an expression that has the type and value of the next
+argument in the call.
+The parameter
+.Fa ap
+is the 
+.Em va_list Fa ap
+initialized by
+.Fn va_start .
+Each call to 
+.Fn va_arg
+modifies
+.Fa ap
+so that the next call returns the next argument.
+The parameter
+.Fa type
+is a type name specified so that the type of a pointer to an
+object that has the specified type can be obtained simply by 
+adding a *
+to
+.Fa type .
+.Pp
+If there is no next argument, or if
+.Fa type
+is not compatible with the type of the actual next argument
+(as promoted according to the default argument promotions),
+random errors will occur.
+.Pp
+The first use of the
+.Fn va_arg
+macro after that of the 
+.Fn va_start
+macro returns the argument after 
+.Fa last .
+Successive invocations return the values of the remaining
+arguments.
+.Pp
+The
+.Fn va_end
+macro handles a normal return from the function whose variable argument
+list was initialized by 
+.Fn va_start .
+.Pp
+The
+.Fn va_end
+macro returns no value.
+.Sh EXAMPLES
+The function
+.Em foo
+takes a string of format characters and prints out the argument
+associated with each format character based on the type.
+.Bd -literal -offset indent
+void foo(char *fmt, ...)
+{
+	va_list ap;
+	int d;
+	char c, *p, *s;
+
+	va_start(ap, fmt);
+	while (*fmt)
+		switch(*fmt++) {
+		case 's':			/* string */
+			s = va_arg(ap, char *);
+			printf("string %s\en", s);
+			break;
+		case 'd':			/* int */
+			d = va_arg(ap, int);
+			printf("int %d\en", d);
+			break;
+		case 'c':			/* char */
+			c = va_arg(ap, char);
+			printf("char %c\en", c);
+			break;
+		}
+	va_end(ap);
+}
+.Ed
+.Sh STANDARDS
+The
+.Fn va_start ,
+.Fn va_arg ,
+and
+.Fn va_end
+macros conform to
+.St -ansiC .
+.Sh COMPATIBILITY
+These macros are
+.Em not
+compatible with the historic macros they replace.
+A backward compatible version can be found in the include
+file 
+.Aq Pa varargs.h .
+.Sh BUGS
+Unlike the
+.Em varargs
+macros, the
+.Nm stdarg
+macros do not permit programmers to
+code a function with no fixed arguments.
+This problem generates work mainly when converting
+.Em varargs
+code to
+.Nm stdarg
+code,
+but it also creates difficulties for variadic functions that
+wish to pass all of their arguments on to a function
+that takes a
+.Em va_list
+argument, such as
+.Xr vfprintf 3 .