[apple/libc.git] / stdio / FreeBSD / stdio.3

.\" Copyright (c) 1990, 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.
.\"
.\"     @(#)stdio.3	8.7 (Berkeley) 4/19/94
.\" $FreeBSD: src/lib/libc/stdio/stdio.3,v 1.26 2004/07/02 23:52:12 ru Exp $
.\"
.Dd January 10, 2003
.Dt STDIO 3
.Os
.Sh NAME
.Nm stdio
.Nd standard input/output library functions
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdio.h
.Vt FILE *stdin ;
.Vt FILE *stdout ;
.Vt FILE *stderr ;
.Sh DESCRIPTION
The standard
.Tn I/O
library provides a simple and efficient buffered stream
.Tn I/O
interface.
Input and output is mapped into logical data streams
and the physical
.Tn I/O
characteristics are concealed.
The functions and macros are listed
below; more information is available from the individual man pages.
.Pp
A stream is associated with an external file (which may be a physical
device) by
.Em opening
a file, which may involve creating a new file.
Creating an
existing file causes its former contents to be discarded.
If a file can support positioning requests (such as a disk file, as opposed
to a terminal) then a
.Em file position indicator
associated with the stream is positioned at the start of the file (byte
zero), unless the file is opened with append mode.
If append mode
is used, the position indicator will be placed at the end-of-file.
The position indicator is maintained by subsequent reads, writes
and positioning requests.
All input occurs as if the characters
were read by successive calls to the
.Xr fgetc 3
function; all output takes place as if all characters were
written by successive calls to the
.Xr fputc 3
function.
.Pp
A file is disassociated from a stream by
.Em closing
the file.
Output streams are flushed (any unwritten buffer contents are transferred
to the host environment) before the stream is disassociated from the file.
The value of a pointer to a
.Dv FILE
object is indeterminate (garbage) after a file is closed.
.Pp
A file may be subsequently reopened, by the same or another program
execution, and its contents reclaimed or modified (if it can be repositioned
at the start).
If the main function returns to its original caller, or
the
.Xr exit 3
function is called, all open files are closed (hence all output
streams are flushed) before program termination.
Other methods
of program termination may not close files properly and hence
buffered output may be lost.
In particular,
.Xr _exit 2
does not flush stdio files.
Neither does an exit due to a signal.
Buffers are flushed by
.Xr abort 3
as required by POSIX, although previous implementations did not.
.Pp
This implementation makes no distinction between
.Dq text
and
.Dq binary
streams.
In effect, all streams are binary.
No translation is performed and no extra padding appears on any stream.
.Pp
At program startup, three streams are predefined and need not be
opened explicitly:
.Bl -bullet -compact -offset indent
.It
.Em standard input
(for reading conventional input),
.It
.Em standard output
(for writing conventional output), and
.It
.Em standard error
(for writing diagnostic output).
.El
These streams are abbreviated
.Dv stdin , stdout
and
.Dv stderr .
Initially, the standard error stream
is unbuffered; the standard input and output streams are
fully buffered if and only if the streams do not refer to
an interactive or
.Dq terminal
device, as determined by the
.Xr isatty 3
function.
In fact,
.Em all
freshly-opened streams that refer to terminal devices
default to line buffering, and
pending output to such streams is written automatically
whenever such an input stream is read.
Note that this applies only to
.Dq "true reads" ;
if the read request can be satisfied by existing buffered data,
no automatic flush will occur.
In these cases,
or when a large amount of computation is done after printing
part of a line on an output terminal, it is necessary to
.Xr fflush 3
the standard output before going off and computing so that the output
will appear.
Alternatively, these defaults may be modified via the
.Xr setvbuf 3
function.
.Pp
The
.Nm
library is a part of the library
.Nm libc
and routines are automatically loaded as needed by the C compiler.
The
.Tn SYNOPSIS
sections of the following manual pages indicate which include files
are to be used, what the compiler declaration for the function
looks like and which external variables are of interest.
.Pp
The following are defined as macros;
these names may not be re-used
without first removing their current definitions with
.Ic #undef :
.Dv BUFSIZ ,
.Dv EOF ,
.Dv FILENAME_MAX ,
.Dv FOPEN_MAX ,
.Dv L_ctermid ,
.Dv L_cuserid ,
.Dv L_tmpnam ,
.Dv NULL ,
.Dv P_tmpdir ,
.Dv SEEK_CUR ,
.Dv SEEK_END ,
.Dv SEEK_SET ,
.Dv TMP_MAX ,
.Dv clearerr ,
.Dv clearerr_unlocked ,
.Dv feof ,
.Dv feof_unlocked ,
.Dv ferror ,
.Dv ferror_unlocked ,
.Dv fileno ,
.Dv fileno_unlocked ,
.Dv fropen ,
.Dv fwopen ,
.Dv getc ,
.Dv getc_unlocked ,
.Dv getchar ,
.Dv getchar_unlocked ,
.Dv putc ,
.Dv putc_unlocked ,
.Dv putchar ,
.Dv putchar_unlocked ,
.Dv stderr ,
.Dv stdin
and
.Dv stdout .
Function versions of the macro functions
.Dv clearerr ,
.Dv clearerr_unlocked ,
.Dv feof ,
.Dv feof_unlocked ,
.Dv ferror ,
.Dv ferror_unlocked ,
.Dv fileno ,
.Dv fileno_unlocked ,
.Dv getc ,
.Dv getc_unlocked ,
.Dv getchar ,
.Dv getchar_unlocked ,
.Dv putc ,
.Dv putc_unlocked ,
.Dv putchar ,
and
.Dv putchar_unlocked
exist and will be used if the macro
definitions are explicitly removed.
.Sh SEE ALSO
.Xr close 2 ,
.Xr open 2 ,
.Xr read 2 ,
.Xr write 2
.Sh BUGS
The standard buffered functions do not interact well with certain other
library and system functions, especially
.Xr vfork 2 .
.Sh STANDARDS
The
.Nm
library conforms to
.St -isoC-99 .
.Sh LIST OF FUNCTIONS
.Bl -column "Description"
.It Sy "Function	Description"
.It "asprintf	formatted output conversion"
.It "clearerr	check and reset stream status"
.It "fclose	close a stream"
.It "fdopen	stream open functions"
.It "feof	check and reset stream status"
.It "ferror	check and reset stream status"
.It "fflush	flush a stream"
.It "fgetc	get next character or word from input stream"
.It "fgetln	get a line from a stream"
.It "fgetpos	reposition a stream"
.It "fgets	get a line from a stream"
.It "fgetwc	get next wide character from input stream"
.It "fgetws	get a line of wide characters from a stream"
.It "fileno	check and reset stream status"
.It "fopen	stream open functions"
.It "fprintf	formatted output conversion"
.It "fpurge	flush a stream"
.It "fputc	output a character or word to a stream"
.It "fputs	output a line to a stream"
.It "fputwc	output a wide character to a stream"
.It "fputws	output a line of wide characters to a stream"
.It "fread	binary stream input/output"
.It "freopen	stream open functions"
.It "fropen	open a stream"
.It "fscanf	input format conversion"
.It "fseek	reposition a stream"
.It "fsetpos	reposition a stream"
.It "ftell	reposition a stream"
.It "funopen	open a stream"
.It "fwide	set/get orientation of stream"
.It "fwopen	open a stream"
.It "fwprintf	formatted wide character output conversion"
.It "fwrite	binary stream input/output"
.It "getc	get next character or word from input stream"
.It "getchar	get next character or word from input stream"
.It "gets	get a line from a stream"
.It "getw	get next character or word from input stream"
.It "getwc	get next wide character from input stream"
.It "getwchar	get next wide character from input stream"
.It "mkdtemp	create unique temporary directory"
.It "mkstemp	create unique temporary file"
.It "mktemp	create unique temporary file"
.It "perror	system error messages"
.It "printf	formatted output conversion"
.It "putc	output a character or word to a stream"
.It "putchar	output a character or word to a stream"
.It "puts	output a line to a stream"
.It "putw	output a character or word to a stream"
.It "putwc	output a wide character to a stream"
.It "putwchar	output a wide character to a stream"
.It "remove	remove directory entry"
.It "rewind	reposition a stream"
.It "scanf	input format conversion"
.It "setbuf	stream buffering operations"
.It "setbuffer	stream buffering operations"
.It "setlinebuf	stream buffering operations"
.It "setvbuf	stream buffering operations"
.It "snprintf	formatted output conversion"
.It "sprintf	formatted output conversion"
.It "sscanf	input format conversion"
.It "strerror	system error messages"
.It "swprintf	formatted wide character output conversion"
.It "sys_errlist	system error messages"
.It "sys_nerr	system error messages"
.It "tempnam	temporary file routines"
.It "tmpfile	temporary file routines"
.It "tmpnam	temporary file routines"
.It "ungetc	un-get character from input stream"
.It "ungetwc	un-get wide character from input stream"
.It "vasprintf	formatted output conversion"
.It "vfprintf	formatted output conversion"
.It "vfscanf	input format conversion"
.It "vfwprintf	formatted wide character output conversion"
.It "vprintf	formatted output conversion"
.It "vscanf	input format conversion"
.It "vsnprintf	formatted output conversion"
.It "vsprintf	formatted output conversion"
.It "vsscanf	input format conversion"
.It "vswprintf	formatted wide character output conversion"
.It "vwprintf	formatted wide character output conversion"
.It "wprintf	formatted wide character output conversion"
.El
Commit	Line	Data
5b2abdfb A	1	.\" Copyright (c) 1990, 1991, 1993
	2	.\" The Regents of the University of California. All rights reserved.
	3	.\"
	4	.\" Redistribution and use in source and binary forms, with or without
	5	.\" modification, are permitted provided that the following conditions
	6	.\" are met:
	7	.\" 1. Redistributions of source code must retain the above copyright
	8	.\" notice, this list of conditions and the following disclaimer.
	9	.\" 2. Redistributions in binary form must reproduce the above copyright
	10	.\" notice, this list of conditions and the following disclaimer in the
	11	.\" documentation and/or other materials provided with the distribution.
	12	.\" 3. All advertising materials mentioning features or use of this software
	13	.\" must display the following acknowledgement:
	14	.\" This product includes software developed by the University of
	15	.\" California, Berkeley and its contributors.
	16	.\" 4. Neither the name of the University nor the names of its contributors
	17	.\" may be used to endorse or promote products derived from this software
	18	.\" without specific prior written permission.
	19	.\"
	20	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	21	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	24	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	.\" SUCH DAMAGE.
	31	.\"
	32	.\" @(#)stdio.3 8.7 (Berkeley) 4/19/94
3d9156a7	33	.\" $FreeBSD: src/lib/libc/stdio/stdio.3,v 1.26 2004/07/02 23:52:12 ru Exp $
5b2abdfb	34	.\"
9385eb3d	35	.Dd January 10, 2003
5b2abdfb A	36	.Dt STDIO 3
	37	.Os
	38	.Sh NAME
	39	.Nm stdio
	40	.Nd standard input/output library functions
	41	.Sh LIBRARY
	42	.Lb libc
	43	.Sh SYNOPSIS
	44	.In stdio.h
	45	.Vt FILE *stdin ;
	46	.Vt FILE *stdout ;
	47	.Vt FILE *stderr ;
	48	.Sh DESCRIPTION
	49	The standard
	50	.Tn I/O
	51	library provides a simple and efficient buffered stream
	52	.Tn I/O
	53	interface.
	54	Input and output is mapped into logical data streams
	55	and the physical
	56	.Tn I/O
	57	characteristics are concealed.
	58	The functions and macros are listed
	59	below; more information is available from the individual man pages.
	60	.Pp
	61	A stream is associated with an external file (which may be a physical
	62	device) by
	63	.Em opening
	64	a file, which may involve creating a new file.
	65	Creating an
	66	existing file causes its former contents to be discarded.
	67	If a file can support positioning requests (such as a disk file, as opposed
	68	to a terminal) then a
	69	.Em file position indicator
	70	associated with the stream is positioned at the start of the file (byte
	71	zero), unless the file is opened with append mode.
	72	If append mode
	73	is used, the position indicator will be placed at the end-of-file.
	74	The position indicator is maintained by subsequent reads, writes
	75	and positioning requests.
	76	All input occurs as if the characters
	77	were read by successive calls to the
	78	.Xr fgetc 3
	79	function; all output takes place as if all characters were
	80	written by successive calls to the
	81	.Xr fputc 3
	82	function.
	83	.Pp
	84	A file is disassociated from a stream by
	85	.Em closing
	86	the file.
	87	Output streams are flushed (any unwritten buffer contents are transferred
	88	to the host environment) before the stream is disassociated from the file.
	89	The value of a pointer to a
	90	.Dv FILE
	91	object is indeterminate (garbage) after a file is closed.
	92	.Pp
	93	A file may be subsequently reopened, by the same or another program
	94	execution, and its contents reclaimed or modified (if it can be repositioned
3d9156a7 A	95	at the start).
3d9156a7 A	96	If the main function returns to its original caller, or
5b2abdfb A	97	the
	98	.Xr exit 3
	99	function is called, all open files are closed (hence all output
3d9156a7 A	100	streams are flushed) before program termination.
3d9156a7 A	101	Other methods
5b2abdfb	102	of program termination may not close files properly and hence
3d9156a7 A	103	buffered output may be lost.
3d9156a7 A	104	In particular,
5b2abdfb	105	.Xr _exit 2
3d9156a7 A	106	does not flush stdio files.
3d9156a7 A	107	Neither does an exit due to a signal.
5b2abdfb A	108	Buffers are flushed by
	109	.Xr abort 3
	110	as required by POSIX, although previous implementations did not.
	111	.Pp
	112	This implementation makes no distinction between
	113	.Dq text
	114	and
	115	.Dq binary
	116	streams.
	117	In effect, all streams are binary.
	118	No translation is performed and no extra padding appears on any stream.
	119	.Pp
	120	At program startup, three streams are predefined and need not be
	121	opened explicitly:
	122	.Bl -bullet -compact -offset indent
	123	.It
	124	.Em standard input
	125	(for reading conventional input),
	126	.It
	127	.Em standard output
	128	(for writing conventional output), and
	129	.It
	130	.Em standard error
	131	(for writing diagnostic output).
	132	.El
	133	These streams are abbreviated
9385eb3d	134	.Dv stdin , stdout
5b2abdfb	135	and
9385eb3d	136	.Dv stderr .
5b2abdfb A	137	Initially, the standard error stream
	138	is unbuffered; the standard input and output streams are
	139	fully buffered if and only if the streams do not refer to
	140	an interactive or
	141	.Dq terminal
	142	device, as determined by the
	143	.Xr isatty 3
	144	function.
	145	In fact,
	146	.Em all
	147	freshly-opened streams that refer to terminal devices
	148	default to line buffering, and
	149	pending output to such streams is written automatically
	150	whenever such an input stream is read.
	151	Note that this applies only to
	152	.Dq "true reads" ;
	153	if the read request can be satisfied by existing buffered data,
	154	no automatic flush will occur.
	155	In these cases,
	156	or when a large amount of computation is done after printing
	157	part of a line on an output terminal, it is necessary to
	158	.Xr fflush 3
	159	the standard output before going off and computing so that the output
	160	will appear.
	161	Alternatively, these defaults may be modified via the
	162	.Xr setvbuf 3
	163	function.
	164	.Pp
	165	The
	166	.Nm
	167	library is a part of the library
	168	.Nm libc
	169	and routines are automatically loaded as needed by the C compiler.
	170	The
	171	.Tn SYNOPSIS
	172	sections of the following manual pages indicate which include files
	173	are to be used, what the compiler declaration for the function
	174	looks like and which external variables are of interest.
	175	.Pp
	176	The following are defined as macros;
	177	these names may not be re-used
	178	without first removing their current definitions with
9385eb3d	179	.Ic #undef :
5b2abdfb A	180	.Dv BUFSIZ ,
	181	.Dv EOF ,
	182	.Dv FILENAME_MAX ,
	183	.Dv FOPEN_MAX ,
5b2abdfb	184	.Dv L_ctermid ,
9385eb3d	185	.Dv L_cuserid ,
5b2abdfb A	186	.Dv L_tmpnam ,
	187	.Dv NULL ,
	188	.Dv P_tmpdir ,
	189	.Dv SEEK_CUR ,
	190	.Dv SEEK_END ,
	191	.Dv SEEK_SET ,
	192	.Dv TMP_MAX ,
3d9156a7	193	.Dv clearerr ,
9385eb3d	194	.Dv clearerr_unlocked ,
3d9156a7	195	.Dv feof ,
9385eb3d	196	.Dv feof_unlocked ,
3d9156a7	197	.Dv ferror ,
9385eb3d	198	.Dv ferror_unlocked ,
3d9156a7	199	.Dv fileno ,
9385eb3d	200	.Dv fileno_unlocked ,
5b2abdfb A	201	.Dv fropen ,
5b2abdfb A	202	.Dv fwopen ,
3d9156a7	203	.Dv getc ,
9385eb3d	204	.Dv getc_unlocked ,
3d9156a7	205	.Dv getchar ,
9385eb3d	206	.Dv getchar_unlocked ,
3d9156a7	207	.Dv putc ,
9385eb3d	208	.Dv putc_unlocked ,
3d9156a7	209	.Dv putchar ,
9385eb3d	210	.Dv putchar_unlocked ,
5b2abdfb	211	.Dv stderr ,
9385eb3d A	212	.Dv stdin
	213	and
	214	.Dv stdout .
5b2abdfb	215	Function versions of the macro functions
3d9156a7	216	.Dv clearerr ,
9385eb3d	217	.Dv clearerr_unlocked ,
3d9156a7	218	.Dv feof ,
9385eb3d	219	.Dv feof_unlocked ,
3d9156a7	220	.Dv ferror ,
9385eb3d	221	.Dv ferror_unlocked ,
3d9156a7	222	.Dv fileno ,
9385eb3d	223	.Dv fileno_unlocked ,
3d9156a7	224	.Dv getc ,
9385eb3d	225	.Dv getc_unlocked ,
3d9156a7	226	.Dv getchar ,
9385eb3d	227	.Dv getchar_unlocked ,
3d9156a7 A	228	.Dv putc ,
	229	.Dv putc_unlocked ,
	230	.Dv putchar ,
5b2abdfb	231	and
9385eb3d	232	.Dv putchar_unlocked
5b2abdfb A	233	exist and will be used if the macro
	234	definitions are explicitly removed.
	235	.Sh SEE ALSO
	236	.Xr close 2 ,
	237	.Xr open 2 ,
	238	.Xr read 2 ,
	239	.Xr write 2
	240	.Sh BUGS
	241	The standard buffered functions do not interact well with certain other
	242	library and system functions, especially
	243	.Xr vfork 2 .
	244	.Sh STANDARDS
	245	The
	246	.Nm
	247	library conforms to
9385eb3d	248	.St -isoC-99 .
5b2abdfb A	249	.Sh LIST OF FUNCTIONS
	250	.Bl -column "Description"
	251	.It Sy "Function Description"
	252	.It "asprintf formatted output conversion"
	253	.It "clearerr check and reset stream status"
	254	.It "fclose close a stream"
	255	.It "fdopen stream open functions"
	256	.It "feof check and reset stream status"
	257	.It "ferror check and reset stream status"
	258	.It "fflush flush a stream"
	259	.It "fgetc get next character or word from input stream"
	260	.It "fgetln get a line from a stream"
	261	.It "fgetpos reposition a stream"
	262	.It "fgets get a line from a stream"
9385eb3d A	263	.It "fgetwc get next wide character from input stream"
9385eb3d A	264	.It "fgetws get a line of wide characters from a stream"
5b2abdfb A	265	.It "fileno check and reset stream status"
	266	.It "fopen stream open functions"
	267	.It "fprintf formatted output conversion"
	268	.It "fpurge flush a stream"
	269	.It "fputc output a character or word to a stream"
	270	.It "fputs output a line to a stream"
9385eb3d A	271	.It "fputwc output a wide character to a stream"
9385eb3d A	272	.It "fputws output a line of wide characters to a stream"
5b2abdfb A	273	.It "fread binary stream input/output"
	274	.It "freopen stream open functions"
	275	.It "fropen open a stream"
	276	.It "fscanf input format conversion"
	277	.It "fseek reposition a stream"
	278	.It "fsetpos reposition a stream"
	279	.It "ftell reposition a stream"
	280	.It "funopen open a stream"
9385eb3d	281	.It "fwide set/get orientation of stream"
5b2abdfb	282	.It "fwopen open a stream"
9385eb3d	283	.It "fwprintf formatted wide character output conversion"
5b2abdfb A	284	.It "fwrite binary stream input/output"
	285	.It "getc get next character or word from input stream"
	286	.It "getchar get next character or word from input stream"
	287	.It "gets get a line from a stream"
	288	.It "getw get next character or word from input stream"
9385eb3d A	289	.It "getwc get next wide character from input stream"
	290	.It "getwchar get next wide character from input stream"
	291	.It "mkdtemp create unique temporary directory"
5b2abdfb A	292	.It "mkstemp create unique temporary file"
	293	.It "mktemp create unique temporary file"
	294	.It "perror system error messages"
	295	.It "printf formatted output conversion"
	296	.It "putc output a character or word to a stream"
	297	.It "putchar output a character or word to a stream"
	298	.It "puts output a line to a stream"
	299	.It "putw output a character or word to a stream"
9385eb3d A	300	.It "putwc output a wide character to a stream"
9385eb3d A	301	.It "putwchar output a wide character to a stream"
5b2abdfb A	302	.It "remove remove directory entry"
	303	.It "rewind reposition a stream"
	304	.It "scanf input format conversion"
	305	.It "setbuf stream buffering operations"
	306	.It "setbuffer stream buffering operations"
	307	.It "setlinebuf stream buffering operations"
	308	.It "setvbuf stream buffering operations"
	309	.It "snprintf formatted output conversion"
	310	.It "sprintf formatted output conversion"
	311	.It "sscanf input format conversion"
	312	.It "strerror system error messages"
9385eb3d	313	.It "swprintf formatted wide character output conversion"
5b2abdfb A	314	.It "sys_errlist system error messages"
	315	.It "sys_nerr system error messages"
	316	.It "tempnam temporary file routines"
	317	.It "tmpfile temporary file routines"
	318	.It "tmpnam temporary file routines"
	319	.It "ungetc un-get character from input stream"
9385eb3d	320	.It "ungetwc un-get wide character from input stream"
5b2abdfb A	321	.It "vasprintf formatted output conversion"
	322	.It "vfprintf formatted output conversion"
	323	.It "vfscanf input format conversion"
9385eb3d	324	.It "vfwprintf formatted wide character output conversion"
5b2abdfb A	325	.It "vprintf formatted output conversion"
	326	.It "vscanf input format conversion"
	327	.It "vsnprintf formatted output conversion"
	328	.It "vsprintf formatted output conversion"
	329	.It "vsscanf input format conversion"
9385eb3d A	330	.It "vswprintf formatted wide character output conversion"
	331	.It "vwprintf formatted wide character output conversion"
	332	.It "wprintf formatted wide character output conversion"
5b2abdfb	333	.El