Mention PR ld/4701.

[deliverable/binutils-gdb.git] / libiberty / functions.texi

diff --git a/libiberty/functions.texi b/libiberty/functions.texi
index 4ce7e9caa9d169a6be96554363fafc5f6959825f..fd3e8e74ea7b17565dfa00aadf3726071c6f9c2c 100644 (file)
--- a/libiberty/functions.texi
+++ b/libiberty/functions.texi
@@ -3,6 +3,28 @@
 @c Edit the *.c files, configure with --enable-maintainer-mode,
 @c and let gather-docs build you a new copy.
 
 @c Edit the *.c files, configure with --enable-maintainer-mode,
 @c and let gather-docs build you a new copy.
 

+@c safe-ctype.c:25
+@defvr Extension HOST_CHARSET
+This macro indicates the basic character set and encoding used by the
+host: more precisely, the encoding used for character constants in
+preprocessor @samp{#if} statements (the C "execution character set").
+It is defined by @file{safe-ctype.h}, and will be an integer constant
+with one of the following values:
+
+@ftable @code
+@item HOST_CHARSET_UNKNOWN
+The host character set is unknown - that is, not one of the next two
+possibilities.
+
+@item HOST_CHARSET_ASCII
+The host character set is ASCII.
+
+@item HOST_CHARSET_EBCDIC
+The host character set is some variant of EBCDIC.  (Only one of the
+nineteen EBCDIC varying characters is tested; exercise caution.)
+@end ftable
+@end defvr
+

 @c alloca.c:26
 @deftypefn Replacement void* alloca (size_t @var{size})
 
 @c alloca.c:26
 @deftypefn Replacement void* alloca (size_t @var{size})
 


@@ -21,6 +43,19 @@ the possibility of a GCC built-in function.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c asprintf.c:32
+@deftypefn Extension int asprintf (char **@var{resptr}, const char *@var{format}, ...)
+
+Like @code{sprintf}, but instead of passing a pointer to a buffer, you
+pass a pointer to a pointer.  This function will compute the size of
+the buffer needed, allocate memory with @code{malloc}, and store a
+pointer to the allocated memory in @code{*@var{resptr}}.  The value
+returned is the same as @code{sprintf} would return.  If memory could
+not be allocated, minus one is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
+

 @c atexit.c:6
 @deftypefn Supplemental int atexit (void (*@var{f})())
 
 @c atexit.c:6
 @deftypefn Supplemental int atexit (void (*@var{f})())
 


@@ -40,8 +75,8 @@ Behavior is undefined if the pathname ends in a directory separator.
 @deftypefn Supplemental int bcmp (char *@var{x}, char *@var{y}, int @var{count})
 
 Compares the first @var{count} bytes of two areas of memory.  Returns
 @deftypefn Supplemental int bcmp (char *@var{x}, char *@var{y}, int @var{count})
 
 Compares the first @var{count} bytes of two areas of memory.  Returns

-zero if they are the same, non-zero otherwise.  Returns zero if
-@var{count} is zero.  A non-zero result only indicates a difference,
+zero if they are the same, nonzero otherwise.  Returns zero if
+@var{count} is zero.  A nonzero result only indicates a difference,

 it does not indicate any sorting order (say, by having a positive
 result mean @var{x} sorts before @var{y}).
 
 it does not indicate any sorting order (say, by having a positive
 result mean @var{x} sorts before @var{y}).
 


@@ -69,6 +104,31 @@ is respectively less than, matching, or greater than the array member.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c argv.c:124
+@deftypefn Extension char** buildargv (char *@var{sp})
+
+Given a pointer to a string, parse the string extracting fields
+separated by whitespace and optionally enclosed within either single
+or double quotes (which are stripped off), and build a vector of
+pointers to copies of the string for each field.  The input string
+remains unchanged.  The last element of the vector is followed by a
+@code{NULL} element.
+
+All of the memory for the pointer array and copies of the string
+is obtained from @code{malloc}.  All of the memory can be returned to the
+system with the single function call @code{freeargv}, which takes the
+returned result of @code{buildargv}, as it's argument.
+
+Returns a pointer to the argument vector if successful.  Returns
+@code{NULL} if @var{sp} is @code{NULL} or if there is insufficient
+memory to complete building the argument vector.
+
+If the input is a null string (as opposed to a @code{NULL} pointer),
+then buildarg returns an argument vector that has one arg, a null
+string.
+
+@end deftypefn
+

 @c bzero.c:6
 @deftypefn Supplemental void bzero (char *@var{mem}, int @var{count})
 
 @c bzero.c:6
 @deftypefn Supplemental void bzero (char *@var{mem}, int @var{count})
 


@@ -85,6 +145,27 @@ Uses @code{malloc} to allocate storage for @var{nelem} objects of
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c choose-temp.c:42
+@deftypefn Extension char* choose_temp_base (void)
+
+Return a prefix for temporary file names or @code{NULL} if unable to
+find one.  The current directory is chosen if all else fails so the
+program is exited if a temporary directory can't be found (@code{mktemp}
+fails).  The buffer for the result is obtained with @code{xmalloc}.
+
+This function is provided for backwards compatibility only.  Its use is
+not recommended.
+
+@end deftypefn
+
+@c make-temp-file.c:87
+@deftypefn Replacement char* choose_tmpdir ()
+
+Returns a pointer to a directory path suitable for creating temporary
+files in.
+
+@end deftypefn
+

 @c clock.c:27
 @deftypefn Supplemental long clock (void)
 
 @c clock.c:27
 @deftypefn Supplemental long clock (void)
 


@@ -94,8 +175,29 @@ number of seconds used.
 
 @end deftypefn
 
 
 @end deftypefn
 

-@c strerror.c:566
-@deftypefn Replacement int errno_max (void)
+@c concat.c:24
+@deftypefn Extension char* concat (const char *@var{s1}, const char *@var{s2}, @dots{}, @code{NULL})
+
+Concatenate zero or more of strings and return the result in freshly
+@code{xmalloc}ed memory.  Returns @code{NULL} if insufficient memory is
+available.  The argument list is terminated by the first @code{NULL}
+pointer encountered.  Pointers to empty strings are ignored.
+
+@end deftypefn
+
+@c argv.c:52
+@deftypefn Extension char** dupargv (char **@var{vector})
+
+Duplicate an argument vector.  Simply scans through @var{vector},
+duplicating each argument until the terminating @code{NULL} is found.
+Returns a pointer to the argument vector if successful.  Returns
+@code{NULL} if there is insufficient memory to complete building the
+argument vector.
+
+@end deftypefn
+
+@c strerror.c:567
+@deftypefn Extension int errno_max (void)

 
 Returns the maximum @code{errno} value for which a corresponding
 symbolic name or message is available.  Note that in the case where we
 
 Returns the maximum @code{errno} value for which a corresponding
 symbolic name or message is available.  Note that in the case where we


@@ -112,6 +214,165 @@ symbolic name or message.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c argv.c:293
+@deftypefn Extension void expandargv (int *@var{argcp}, char ***@var{argvp})
+
+The @var{argcp} and @code{argvp} arguments are pointers to the usual
+@code{argc} and @code{argv} arguments to @code{main}.  This function
+looks for arguments that begin with the character @samp{@@}.  Any such
+arguments are interpreted as ``response files''.  The contents of the
+response file are interpreted as additional command line options.  In
+particular, the file is separated into whitespace-separated strings;
+each such string is taken as a command-line option.  The new options
+are inserted in place of the option naming the response file, and
+@code{*argcp} and @code{*argvp} will be updated.  If the value of
+@code{*argvp} is modified by this function, then the new value has
+been dynamically allocated and can be deallocated by the caller with
+@code{freeargv}.  However, most callers will simply call
+@code{expandargv} near the beginning of @code{main} and allow the
+operating system to free the memory when the program exits.
+
+@end deftypefn
+
+@c fdmatch.c:23
+@deftypefn Extension int fdmatch (int @var{fd1}, int @var{fd2})
+
+Check to see if two open file descriptors refer to the same file.
+This is useful, for example, when we have an open file descriptor for
+an unnamed file, and the name of a file that we believe to correspond
+to that fd.  This can happen when we are exec'd with an already open
+file (@code{stdout} for example) or from the SVR4 @file{/proc} calls
+that return open file descriptors for mapped address spaces.  All we
+have to do is open the file by name and check the two file descriptors
+for a match, which is done by comparing major and minor device numbers
+and inode numbers.
+
+@end deftypefn
+
+@c fopen_unlocked.c:48
+@deftypefn Extension {FILE *} fdopen_unlocked (int @var{fildes}, const char * @var{mode})
+
+Opens and returns a @code{FILE} pointer via @code{fdopen}.  If the
+operating system supports it, ensure that the stream is setup to avoid
+any multi-threaded locking.  Otherwise return the @code{FILE} pointer
+unchanged.
+
+@end deftypefn
+
+@c ffs.c:3
+@deftypefn Supplemental int ffs (int @var{valu})
+
+Find the first (least significant) bit set in @var{valu}.  Bits are
+numbered from right to left, starting with bit 1 (corresponding to the
+value 1).  If @var{valu} is zero, zero is returned.
+
+@end deftypefn
+
+@c filename_cmp.c:28
+@deftypefn Extension int filename_cmp (const char *@var{s1}, const char *@var{s2})
+
+Return zero if the two paths @var{s1} and @var{s2} are equivalent.
+If not equivalent, the returned value is similar to what strcmp would
+return.  In other words, it returns a negative value if @var{s1} is less
+than @var{s2}, or a positive value if @var{s2} is greater than @var{s2}.
+
+This function does not normalize path names. As a result, this function
+will treat filenames that are spelled differently as different even in
+the case when the two filenames point to the same underlying file.
+However, it does handle the fact that on DOS-like file systems, forward
+and backward slashes are equal.
+
+@end deftypefn
+
+@c fnmatch.txh:1
+@deftypefn Replacement int fnmatch (const char *@var{pattern}, const char *@var{string}, int @var{flags})
+
+Matches @var{string} against @var{pattern}, returning zero if it
+matches, @code{FNM_NOMATCH} if not.  @var{pattern} may contain the
+wildcards @code{?} to match any one character, @code{*} to match any
+zero or more characters, or a set of alternate characters in square
+brackets, like @samp{[a-gt8]}, which match one character (@code{a}
+through @code{g}, or @code{t}, or @code{8}, in this example) if that one
+character is in the set.  A set may be inverted (i.e., match anything
+except what's in the set) by giving @code{^} or @code{!} as the first
+character in the set.  To include those characters in the set, list them
+as anything other than the first character of the set.  To include a
+dash in the set, list it last in the set.  A backslash character makes
+the following character not special, so for example you could match
+against a literal asterisk with @samp{\*}.  To match a literal
+backslash, use @samp{\\}.
+
+@code{flags} controls various aspects of the matching process, and is a
+boolean OR of zero or more of the following values (defined in
+@code{<fnmatch.h>}):
+
+@table @code
+
+@item FNM_PATHNAME
+@itemx FNM_FILE_NAME
+@var{string} is assumed to be a path name.  No wildcard will ever match
+@code{/}.
+
+@item FNM_NOESCAPE
+Do not interpret backslashes as quoting the following special character.
+
+@item FNM_PERIOD
+A leading period (at the beginning of @var{string}, or if
+@code{FNM_PATHNAME} after a slash) is not matched by @code{*} or
+@code{?} but must be matched explicitly.
+
+@item FNM_LEADING_DIR
+Means that @var{string} also matches @var{pattern} if some initial part
+of @var{string} matches, and is followed by @code{/} and zero or more
+characters.  For example, @samp{foo*} would match either @samp{foobar}
+or @samp{foobar/grill}.
+
+@item FNM_CASEFOLD
+Ignores case when performing the comparison.
+
+@end table
+
+@end deftypefn
+
+@c fopen_unlocked.c:39
+@deftypefn Extension {FILE *} fopen_unlocked (const char *@var{path}, const char * @var{mode})
+
+Opens and returns a @code{FILE} pointer via @code{fopen}.  If the
+operating system supports it, ensure that the stream is setup to avoid
+any multi-threaded locking.  Otherwise return the @code{FILE} pointer
+unchanged.
+
+@end deftypefn
+
+@c argv.c:97
+@deftypefn Extension void freeargv (char **@var{vector})
+
+Free an argument vector that was built using @code{buildargv}.  Simply
+scans through @var{vector}, freeing the memory for each argument until
+the terminating @code{NULL} is found, and then frees @var{vector}
+itself.
+
+@end deftypefn
+
+@c fopen_unlocked.c:57
+@deftypefn Extension {FILE *} freopen_unlocked (const char * @var{path}, const char * @var{mode}, FILE * @var{stream})
+
+Opens and returns a @code{FILE} pointer via @code{freopen}.  If the
+operating system supports it, ensure that the stream is setup to avoid
+any multi-threaded locking.  Otherwise return the @code{FILE} pointer
+unchanged.
+
+@end deftypefn
+
+@c getruntime.c:82
+@deftypefn Replacement long get_run_time (void)
+
+Returns the time used so far, in microseconds.  If possible, this is
+the time used by this process, else it is the elapsed time since the
+process started.
+
+@end deftypefn
+

 @c getcwd.c:6
 @deftypefn Supplemental char* getcwd (char *@var{pathname}, int @var{len})
 
 @c getcwd.c:6
 @deftypefn Supplemental char* getcwd (char *@var{pathname}, int @var{len})
 


@@ -144,6 +405,49 @@ between calls to @code{getpwd}.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c gettimeofday.c:12
+@deftypefn Supplemental int gettimeofday (struct timeval *@var{tp}, void *@var{tz})
+
+Writes the current time to @var{tp}.  This implementation requires
+that @var{tz} be NULL.  Returns 0 on success, -1 on failure.
+
+@end deftypefn
+
+@c hex.c:33
+@deftypefn Extension void hex_init (void)
+
+Initializes the array mapping the current character set to
+corresponding hex values.  This function must be called before any
+call to @code{hex_p} or @code{hex_value}.  If you fail to call it, a
+default ASCII-based table will normally be used on ASCII systems.
+
+@end deftypefn
+
+@c hex.c:42
+@deftypefn Extension int hex_p (int @var{c})
+
+Evaluates to non-zero if the given character is a valid hex character,
+or zero if it is not.  Note that the value you pass will be cast to
+@code{unsigned char} within the macro.
+
+@end deftypefn
+
+@c hex.c:50
+@deftypefn Extension {unsigned int} hex_value (int @var{c})
+
+Returns the numeric equivalent of the given character when interpreted
+as a hexadecimal digit.  The result is undefined if you pass an
+invalid hex digit.  Note that the value you pass will be cast to
+@code{unsigned char} within the macro.
+
+The @code{hex_value} macro returns @code{unsigned int}, rather than
+signed @code{int}, to make it easier to use in parsing addresses from
+hex dump files: a signed @code{int} would be sign-extended when
+converted to a wider unsigned type --- like @code{bfd_vma}, on some
+systems.
+
+@end deftypefn
+

 @c index.c:5
 @deftypefn Supplemental char* index (char *@var{s}, int @var{c})
 
 @c index.c:5
 @deftypefn Supplemental char* index (char *@var{s}, int @var{c})
 


@@ -153,6 +457,159 @@ deprecated in new programs in favor of @code{strchr}.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c insque.c:6
+@deftypefn Supplemental void insque (struct qelem *@var{elem}, struct qelem *@var{pred})
+@deftypefnx Supplemental void remque (struct qelem *@var{elem})
+
+Routines to manipulate queues built from doubly linked lists.  The
+@code{insque} routine inserts @var{elem} in the queue immediately
+after @var{pred}.  The @code{remque} routine removes @var{elem} from
+its containing queue.  These routines expect to be passed pointers to
+structures which have as their first members a forward pointer and a
+back pointer, like this prototype (although no prototype is provided):
+
+@example
+struct qelem @{
+  struct qelem *q_forw;
+  struct qelem *q_back;
+  char q_data[];
+@};
+@end example
+
+@end deftypefn
+
+@c safe-ctype.c:46
+@deffn  Extension ISALPHA  (@var{c})
+@deffnx Extension ISALNUM  (@var{c})
+@deffnx Extension ISBLANK  (@var{c})
+@deffnx Extension ISCNTRL  (@var{c})
+@deffnx Extension ISDIGIT  (@var{c})
+@deffnx Extension ISGRAPH  (@var{c})
+@deffnx Extension ISLOWER  (@var{c})
+@deffnx Extension ISPRINT  (@var{c})
+@deffnx Extension ISPUNCT  (@var{c})
+@deffnx Extension ISSPACE  (@var{c})
+@deffnx Extension ISUPPER  (@var{c})
+@deffnx Extension ISXDIGIT (@var{c})
+
+These twelve macros are defined by @file{safe-ctype.h}.  Each has the
+same meaning as the corresponding macro (with name in lowercase)
+defined by the standard header @file{ctype.h}.  For example,
+@code{ISALPHA} returns true for alphabetic characters and false for
+others.  However, there are two differences between these macros and
+those provided by @file{ctype.h}:
+
+@itemize @bullet
+@item These macros are guaranteed to have well-defined behavior for all 
+values representable by @code{signed char} and @code{unsigned char}, and
+for @code{EOF}.
+
+@item These macros ignore the current locale; they are true for these
+fixed sets of characters:
+@multitable {@code{XDIGIT}} {yada yada yada yada yada yada yada yada}
+@item @code{ALPHA}  @tab @kbd{A-Za-z}
+@item @code{ALNUM}  @tab @kbd{A-Za-z0-9}
+@item @code{BLANK}  @tab @kbd{space tab}
+@item @code{CNTRL}  @tab @code{!PRINT}
+@item @code{DIGIT}  @tab @kbd{0-9}
+@item @code{GRAPH}  @tab @code{ALNUM || PUNCT}
+@item @code{LOWER}  @tab @kbd{a-z}
+@item @code{PRINT}  @tab @code{GRAPH ||} @kbd{space}
+@item @code{PUNCT}  @tab @kbd{`~!@@#$%^&*()_-=+[@{]@}\|;:'",<.>/?}
+@item @code{SPACE}  @tab @kbd{space tab \n \r \f \v}
+@item @code{UPPER}  @tab @kbd{A-Z}
+@item @code{XDIGIT} @tab @kbd{0-9A-Fa-f}
+@end multitable
+
+Note that, if the host character set is ASCII or a superset thereof,
+all these macros will return false for all values of @code{char} outside
+the range of 7-bit ASCII.  In particular, both ISPRINT and ISCNTRL return
+false for characters with numeric values from 128 to 255.
+@end itemize
+@end deffn
+
+@c safe-ctype.c:95
+@deffn  Extension ISIDNUM         (@var{c})
+@deffnx Extension ISIDST          (@var{c})
+@deffnx Extension IS_VSPACE       (@var{c})
+@deffnx Extension IS_NVSPACE      (@var{c})
+@deffnx Extension IS_SPACE_OR_NUL (@var{c})
+@deffnx Extension IS_ISOBASIC     (@var{c})
+These six macros are defined by @file{safe-ctype.h} and provide
+additional character classes which are useful when doing lexical
+analysis of C or similar languages.  They are true for the following
+sets of characters:
+
+@multitable {@code{SPACE_OR_NUL}} {yada yada yada yada yada yada yada yada}
+@item @code{IDNUM}        @tab @kbd{A-Za-z0-9_}
+@item @code{IDST}         @tab @kbd{A-Za-z_}
+@item @code{VSPACE}       @tab @kbd{\r \n}
+@item @code{NVSPACE}      @tab @kbd{space tab \f \v \0}
+@item @code{SPACE_OR_NUL} @tab @code{VSPACE || NVSPACE}
+@item @code{ISOBASIC}     @tab @code{VSPACE || NVSPACE || PRINT}
+@end multitable
+@end deffn
+
+@c lbasename.c:23
+@deftypefn Replacement {const char*} lbasename (const char *@var{name})
+
+Given a pointer to a string containing a typical pathname
+(@samp{/usr/src/cmd/ls/ls.c} for example), returns a pointer to the
+last component of the pathname (@samp{ls.c} in this case).  The
+returned pointer is guaranteed to lie within the original
+string.  This latter fact is not true of many vendor C
+libraries, which return special strings or modify the passed
+strings for particular input.
+
+In particular, the empty string returns the same empty string,
+and a path ending in @code{/} returns the empty string after it.
+
+@end deftypefn
+
+@c lrealpath.c:25
+@deftypefn Replacement {const char*} lrealpath (const char *@var{name})
+
+Given a pointer to a string containing a pathname, returns a canonical
+version of the filename.  Symlinks will be resolved, and ``.'' and ``..''
+components will be simplified.  The returned value will be allocated using
+@code{malloc}, or @code{NULL} will be returned on a memory allocation error.
+
+@end deftypefn
+
+@c make-relative-prefix.c:24
+@deftypefn Extension {const char*} make_relative_prefix (const char *@var{progname}, const char *@var{bin_prefix}, const char *@var{prefix})
+
+Given three paths @var{progname}, @var{bin_prefix}, @var{prefix},
+return the path that is in the same position relative to
+@var{progname}'s directory as @var{prefix} is relative to
+@var{bin_prefix}.  That is, a string starting with the directory
+portion of @var{progname}, followed by a relative pathname of the
+difference between @var{bin_prefix} and @var{prefix}.
+
+If @var{progname} does not contain any directory separators,
+@code{make_relative_prefix} will search @env{PATH} to find a program
+named @var{progname}.  Also, if @var{progname} is a symbolic link,
+the symbolic link will be resolved.
+
+For example, if @var{bin_prefix} is @code{/alpha/beta/gamma/gcc/delta},
+@var{prefix} is @code{/alpha/beta/gamma/omega/}, and @var{progname} is
+@code{/red/green/blue/gcc}, then this function will return
+@code{/red/green/blue/../../omega/}.
+
+The return value is normally allocated via @code{malloc}.  If no
+relative prefix can be found, return @code{NULL}.
+
+@end deftypefn
+
+@c make-temp-file.c:137
+@deftypefn Replacement char* make_temp_file (const char *@var{suffix})
+
+Return a temporary file name (as a string) or @code{NULL} if unable to
+create one.  @var{suffix} is a suffix to append to the file name.  The
+string is @code{malloc}ed, and the temporary file has been created.
+
+@end deftypefn
+

 @c memchr.c:3
 @deftypefn Supplemental void* memchr (const void *@var{s}, int @var{c}, size_t @var{n})
 
 @c memchr.c:3
 @deftypefn Supplemental void* memchr (const void *@var{s}, int @var{c}, size_t @var{n})
 


@@ -193,6 +650,14 @@ Copies @var{count} bytes from memory area @var{from} to memory area
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c mempcpy.c:23
+@deftypefn Supplemental void* mempcpy (void *@var{out}, const void *@var{in}, size_t @var{length})
+
+Copies @var{length} bytes from memory region @var{in} to region
+@var{out}.  Returns a pointer to @var{out} + @var{length}.
+
+@end deftypefn
+

 @c memset.c:6
 @deftypefn Supplemental void* memset (void *@var{s}, int @var{c}, size_t @var{count})
 
 @c memset.c:6
 @deftypefn Supplemental void* memset (void *@var{s}, int @var{c}, size_t @var{count})
 


@@ -201,6 +666,334 @@ Sets the first @var{count} bytes of @var{s} to the constant byte
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c mkstemps.c:58
+@deftypefn Replacement int mkstemps (char *@var{pattern}, int @var{suffix_len})
+
+Generate a unique temporary file name from @var{pattern}.
+@var{pattern} has the form:
+
+@example
+   @var{path}/ccXXXXXX@var{suffix}
+@end example
+
+@var{suffix_len} tells us how long @var{suffix} is (it can be zero
+length).  The last six characters of @var{pattern} before @var{suffix}
+must be @samp{XXXXXX}; they are replaced with a string that makes the
+filename unique.  Returns a file descriptor open on the file for
+reading and writing.
+
+@end deftypefn
+
+@c pexecute.txh:266
+@deftypefn Extension void pex_free (struct pex_obj @var{obj})
+
+Clean up and free all data associated with @var{obj}.
+
+@end deftypefn
+
+@c pexecute.txh:241
+@deftypefn Extension int pex_get_status (struct pex_obj *@var{obj}, int @var{count}, int *@var{vector})
+
+Returns the exit status of all programs run using @var{obj}.
+@var{count} is the number of results expected.  The results will be
+placed into @var{vector}.  The results are in the order of the calls
+to @code{pex_run}.  Returns 0 on error, 1 on success.
+
+@end deftypefn
+
+@c pexecute.txh:250
+@deftypefn Extension int pex_get_times (struct pex_obj *@var{obj}, int @var{count}, struct pex_time *@var{vector})
+
+Returns the process execution times of all programs run using
+@var{obj}.  @var{count} is the number of results expected.  The
+results will be placed into @var{vector}.  The results are in the
+order of the calls to @code{pex_run}.  Returns 0 on error, 1 on
+success.
+
+@code{struct pex_time} has the following fields of the type
+@code{unsigned long}: @code{user_seconds},
+@code{user_microseconds}, @code{system_seconds},
+@code{system_microseconds}.  On systems which do not support reporting
+process times, all the fields will be set to @code{0}.
+
+@end deftypefn
+
+@c pexecute.txh:2
+@deftypefn Extension {struct pex_obj *} pex_init (int @var{flags}, const char *@var{pname}, const char *@var{tempbase})
+
+Prepare to execute one or more programs, with standard output of each
+program fed to standard input of the next.  This is a system
+independent interface to execute a pipeline.
+
+@var{flags} is a bitwise combination of the following:
+
+@table @code
+
+@vindex PEX_RECORD_TIMES
+@item PEX_RECORD_TIMES
+Record subprocess times if possible.
+
+@vindex PEX_USE_PIPES
+@item PEX_USE_PIPES
+Use pipes for communication between processes, if possible.
+
+@vindex PEX_SAVE_TEMPS
+@item PEX_SAVE_TEMPS
+Don't delete temporary files used for communication between
+processes.
+
+@end table
+
+@var{pname} is the name of program to be executed, used in error
+messages.  @var{tempbase} is a base name to use for any required
+temporary files; it may be @code{NULL} to use a randomly chosen name.
+
+@end deftypefn
+
+@c pexecute.txh:155
+@deftypefn Extension {FILE *} pex_input_file (struct pex_obj *@var{obj}, int @var{flags}, const char *@var{in_name})
+
+Return a stream for a temporary file to pass to the first program in
+the pipeline as input.
+
+The name of the input file is chosen according to the same rules
+@code{pex_run} uses to choose output file names, based on
+@var{in_name}, @var{obj} and the @code{PEX_SUFFIX} bit in @var{flags}.
+
+Don't call @code{fclose} on the returned stream; the first call to
+@code{pex_run} closes it automatically.
+
+If @var{flags} includes @code{PEX_BINARY_OUTPUT}, open the stream in
+binary mode; otherwise, open it in the default mode.  Including
+@code{PEX_BINARY_OUTPUT} in @var{flags} has no effect on Unix.
+@end deftypefn
+
+@c pexecute.txh:172
+@deftypefn Extension {FILE *} pex_input_pipe (struct pex_obj *@var{obj}, int @var{binary})
+
+Return a stream @var{fp} for a pipe connected to the standard input of
+the first program in the pipeline; @var{fp} is opened for writing.
+You must have passed @code{PEX_USE_PIPES} to the @code{pex_init} call
+that returned @var{obj}.
+
+You must close @var{fp} using @code{fclose} yourself when you have
+finished writing data to the pipeline.
+
+The file descriptor underlying @var{fp} is marked not to be inherited
+by child processes.
+
+On systems that do not support pipes, this function returns
+@code{NULL}, and sets @code{errno} to @code{EINVAL}.  If you would
+like to write code that is portable to all systems the @code{pex}
+functions support, consider using @code{pex_input_file} instead.
+
+There are two opportunities for deadlock using
+@code{pex_input_pipe}:
+
+@itemize @bullet
+@item
+Most systems' pipes can buffer only a fixed amount of data; a process
+that writes to a full pipe blocks.  Thus, if you write to @file{fp}
+before starting the first process, you run the risk of blocking when
+there is no child process yet to read the data and allow you to
+continue.  @code{pex_input_pipe} makes no promises about the
+size of the pipe's buffer, so if you need to write any data at all
+before starting the first process in the pipeline, consider using
+@code{pex_input_file} instead.
+
+@item
+Using @code{pex_input_pipe} and @code{pex_read_output} together
+may also cause deadlock.  If the output pipe fills up, so that each
+program in the pipeline is waiting for the next to read more data, and
+you fill the input pipe by writing more data to @var{fp}, then there
+is no way to make progress: the only process that could read data from
+the output pipe is you, but you are blocked on the input pipe.
+
+@end itemize
+
+@end deftypefn
+
+@c pexecute.txh:272
+@deftypefn Extension {const char *} pex_one (int @var{flags}, const char *@var{executable}, char * const *@var{argv}, const char *@var{pname}, const char *@var{outname}, const char *@var{errname}, int *@var{status}, int *@var{err})
+
+An interface to permit the easy execution of a
+single program.  The return value and most of the parameters are as
+for a call to @code{pex_run}.  @var{flags} is restricted to a
+combination of @code{PEX_SEARCH}, @code{PEX_STDERR_TO_STDOUT}, and
+@code{PEX_BINARY_OUTPUT}.  @var{outname} is interpreted as if
+@code{PEX_LAST} were set.  On a successful return, @code{*@var{status}} will
+be set to the exit status of the program.
+
+@end deftypefn
+
+@c pexecute.txh:228
+@deftypefn Extension {FILE *} pex_read_err (struct pex_obj *@var{obj}, int @var{binary})
+
+Returns a @code{FILE} pointer which may be used to read the standard
+error of the last program in the pipeline.  When this is used,
+@code{PEX_LAST} should not be used in a call to @code{pex_run}.  After
+this is called, @code{pex_run} may no longer be called with the same
+@var{obj}.  @var{binary} should be non-zero if the file should be
+opened in binary mode.  Don't call @code{fclose} on the returned file;
+it will be closed by @code{pex_free}.
+
+@end deftypefn
+
+@c pexecute.txh:216
+@deftypefn Extension {FILE *} pex_read_output (struct pex_obj *@var{obj}, int @var{binary})
+
+Returns a @code{FILE} pointer which may be used to read the standard
+output of the last program in the pipeline.  When this is used,
+@code{PEX_LAST} should not be used in a call to @code{pex_run}.  After
+this is called, @code{pex_run} may no longer be called with the same
+@var{obj}.  @var{binary} should be non-zero if the file should be
+opened in binary mode.  Don't call @code{fclose} on the returned file;
+it will be closed by @code{pex_free}.
+
+@end deftypefn
+
+@c pexecute.txh:33
+@deftypefn Extension {const char *} pex_run (struct pex_obj *@var{obj}, int @var{flags}, const char *@var{executable}, char * const *@var{argv}, const char *@var{outname}, const char *@var{errname}, int *@var{err})
+
+Execute one program in a pipeline.  On success this returns
+@code{NULL}.  On failure it returns an error message, a statically
+allocated string.
+
+@var{obj} is returned by a previous call to @code{pex_init}.
+
+@var{flags} is a bitwise combination of the following:
+
+@table @code
+
+@vindex PEX_LAST
+@item PEX_LAST
+This must be set on the last program in the pipeline.  In particular,
+it should be set when executing a single program.  The standard output
+of the program will be sent to @var{outname}, or, if @var{outname} is
+@code{NULL}, to the standard output of the calling program.  Do @emph{not}
+set this bit if you want to call @code{pex_read_output}
+(described below).  After a call to @code{pex_run} with this bit set,
+@var{pex_run} may no longer be called with the same @var{obj}.
+
+@vindex PEX_SEARCH
+@item PEX_SEARCH
+Search for the program using the user's executable search path.
+
+@vindex PEX_SUFFIX
+@item PEX_SUFFIX
+@var{outname} is a suffix.  See the description of @var{outname},
+below.
+
+@vindex PEX_STDERR_TO_STDOUT
+@item PEX_STDERR_TO_STDOUT
+Send the program's standard error to standard output, if possible.
+
+@vindex PEX_BINARY_INPUT
+@vindex PEX_BINARY_OUTPUT
+@vindex PEX_BINARY_ERROR
+@item PEX_BINARY_INPUT
+@itemx PEX_BINARY_OUTPUT
+@itemx PEX_BINARY_ERROR
+The standard input (output or error) of the program should be read (written) in
+binary mode rather than text mode.  These flags are ignored on systems
+which do not distinguish binary mode and text mode, such as Unix.  For
+proper behavior these flags should match appropriately---a call to
+@code{pex_run} using @code{PEX_BINARY_OUTPUT} should be followed by a
+call using @code{PEX_BINARY_INPUT}.
+
+@vindex PEX_STDERR_TO_PIPE
+@item PEX_STDERR_TO_PIPE
+Send the program's standard error to a pipe, if possible.  This flag
+cannot be specified together with @code{PEX_STDERR_TO_STDOUT}.  This
+flag can be specified only on the last program in pipeline.
+
+@end table
+
+@var{executable} is the program to execute.  @var{argv} is the set of
+arguments to pass to the program; normally @code{@var{argv}[0]} will
+be a copy of @var{executable}.
+
+@var{outname} is used to set the name of the file to use for standard
+output.  There are two cases in which no output file will be used:
+
+@enumerate
+@item
+if @code{PEX_LAST} is not set in @var{flags}, and @code{PEX_USE_PIPES}
+was set in the call to @code{pex_init}, and the system supports pipes
+
+@item
+if @code{PEX_LAST} is set in @var{flags}, and @var{outname} is
+@code{NULL}
+@end enumerate
+
+@noindent
+Otherwise the code will use a file to hold standard
+output.  If @code{PEX_LAST} is not set, this file is considered to be
+a temporary file, and it will be removed when no longer needed, unless
+@code{PEX_SAVE_TEMPS} was set in the call to @code{pex_init}.
+
+There are two cases to consider when setting the name of the file to
+hold standard output.
+
+@enumerate
+@item
+@code{PEX_SUFFIX} is set in @var{flags}.  In this case
+@var{outname} may not be @code{NULL}.  If the @var{tempbase} parameter
+to @code{pex_init} was not @code{NULL}, then the output file name is
+the concatenation of @var{tempbase} and @var{outname}.  If
+@var{tempbase} was @code{NULL}, then the output file name is a random
+file name ending in @var{outname}.
+
+@item
+@code{PEX_SUFFIX} was not set in @var{flags}.  In this
+case, if @var{outname} is not @code{NULL}, it is used as the output
+file name.  If @var{outname} is @code{NULL}, and @var{tempbase} was
+not NULL, the output file name is randomly chosen using
+@var{tempbase}.  Otherwise the output file name is chosen completely
+at random.
+@end enumerate
+
+@var{errname} is the file name to use for standard error output.  If
+it is @code{NULL}, standard error is the same as the caller's.
+Otherwise, standard error is written to the named file.
+
+On an error return, the code sets @code{*@var{err}} to an @code{errno}
+value, or to 0 if there is no relevant @code{errno}.
+
+@end deftypefn
+
+@c pexecute.txh:142
+@deftypefn Extension {const char *} pex_run_in_environment (struct pex_obj *@var{obj}, int @var{flags}, const char *@var{executable}, char * const *@var{argv}, char * const *@var{env}, int @var{env_size}, const char *@var{outname}, const char *@var{errname}, int *@var{err})
+
+Execute one program in a pipeline, permitting the environment for the
+program to be specified.  Behaviour and parameters not listed below are
+as for @code{pex_run}.
+
+@var{env} is the environment for the child process, specified as an array of
+character pointers.  Each element of the array should point to a string of the
+form @code{VAR=VALUE}, with the exception of the last element that must be
+@code{NULL}.
+
+@end deftypefn
+
+@c pexecute.txh:284
+@deftypefn Extension int pexecute (const char *@var{program}, char * const *@var{argv}, const char *@var{this_pname}, const char *@var{temp_base}, char **@var{errmsg_fmt}, char **@var{errmsg_arg}, int @var{flags})
+
+This is the old interface to execute one or more programs.  It is
+still supported for compatibility purposes, but is no longer
+documented.
+
+@end deftypefn
+
+@c strsignal.c:539
+@deftypefn Supplemental void psignal (int @var{signo}, char *@var{message})
+
+Print @var{message} to the standard error, followed by a colon,
+followed by the description of the signal specified by @var{signo},
+followed by a newline.
+
+@end deftypefn
+

 @c putenv.c:21
 @deftypefn Supplemental int putenv (const char *@var{string})
 
 @c putenv.c:21
 @deftypefn Supplemental int putenv (const char *@var{string})
 


@@ -211,6 +1004,42 @@ name is unset/removed.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c pexecute.txh:292
+@deftypefn Extension int pwait (int @var{pid}, int *@var{status}, int @var{flags})
+
+Another part of the old execution interface.
+
+@end deftypefn
+
+@c random.c:39
+@deftypefn Supplement {long int} random (void)
+@deftypefnx Supplement void srandom (unsigned int @var{seed})
+@deftypefnx Supplement void* initstate (unsigned int @var{seed}, void *@var{arg_state}, unsigned long @var{n})
+@deftypefnx Supplement void* setstate (void *@var{arg_state})
+
+Random number functions.  @code{random} returns a random number in the
+range 0 to @code{LONG_MAX}.  @code{srandom} initializes the random
+number generator to some starting point determined by @var{seed}
+(else, the values returned by @code{random} are always the same for each
+run of the program).  @code{initstate} and @code{setstate} allow fine-grained
+control over the state of the random number generator.
+
+@end deftypefn
+
+@c concat.c:173
+@deftypefn Extension char* reconcat (char *@var{optr}, const char *@var{s1}, @dots{}, @code{NULL})
+
+Same as @code{concat}, except that if @var{optr} is not @code{NULL} it
+is freed after the string is created.  This is intended to be useful
+when you're extending an existing string or building up a string in a
+loop:
+
+@example
+  str = reconcat (str, "pre-", str, NULL);
+@end example
+
+@end deftypefn
+

 @c rename.c:6
 @deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new})
 
 @c rename.c:6
 @deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new})
 


@@ -234,12 +1063,30 @@ deprecated in new programs in favor of @code{strrchr}.
 
 @code{setenv} adds @var{name} to the environment with value
 @var{value}.  If the name was already present in the environment,
 
 @code{setenv} adds @var{name} to the environment with value
 @var{value}.  If the name was already present in the environment,

-the new value will be stored only if @var{overwrite} is non-zero.
+the new value will be stored only if @var{overwrite} is nonzero.

 The companion @code{unsetenv} function removes @var{name} from the
 environment.  This implementation is not safe for multithreaded code.
 
 @end deftypefn
 
 The companion @code{unsetenv} function removes @var{name} from the
 environment.  This implementation is not safe for multithreaded code.
 
 @end deftypefn
 

+@c strsignal.c:348
+@deftypefn Extension int signo_max (void)
+
+Returns the maximum signal value for which a corresponding symbolic
+name or message is available.  Note that in the case where we use the
+@code{sys_siglist} supplied by the system, it is possible for there to
+be more symbolic names than messages, or vice versa.  In fact, the
+manual page for @code{psignal(3b)} explicitly warns that one should
+check the size of the table (@code{NSIG}) before indexing it, since
+new signal codes may be added to the system before they are added to
+the table.  Thus @code{NSIG} might be smaller than value implied by
+the largest signo value defined in @code{<signal.h>}.
+
+We return the maximum value that can be used to obtain a meaningful
+symbolic name or message.
+
+@end deftypefn
+

 @c sigsetmask.c:8
 @deftypefn Supplemental int sigsetmask (int @var{set})
 
 @c sigsetmask.c:8
 @deftypefn Supplemental int sigsetmask (int @var{set})
 


@@ -249,6 +1096,46 @@ be the value @code{1}).
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c snprintf.c:28
+@deftypefn Supplemental int snprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, ...)
+
+This function is similar to sprintf, but it will print at most @var{n}
+characters.  On error the return value is -1, otherwise it returns the
+number of characters that would have been printed had @var{n} been
+sufficiently large, regardless of the actual value of @var{n}.  Note
+some pre-C99 system libraries do not implement this correctly so users
+cannot generally rely on the return value if the system version of
+this function is used.
+
+@end deftypefn
+
+@c spaces.c:22
+@deftypefn Extension char* spaces (int @var{count})
+
+Returns a pointer to a memory region filled with the specified
+number of spaces and null terminated.  The returned pointer is
+valid until at least the next call.
+
+@end deftypefn
+
+@c stpcpy.c:23
+@deftypefn Supplemental char* stpcpy (char *@var{dst}, const char *@var{src})
+
+Copies the string @var{src} into @var{dst}.  Returns a pointer to
+@var{dst} + strlen(@var{src}).
+
+@end deftypefn
+
+@c stpncpy.c:23
+@deftypefn Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, size_t @var{len})
+
+Copies the string @var{src} into @var{dst}, copying exactly @var{len}
+and padding with zeros if necessary.  If @var{len} < strlen(@var{src})
+then return @var{dst} + @var{len}, otherwise returns @var{dst} +
+strlen(@var{src}).
+
+@end deftypefn
+

 @c strcasecmp.c:15
 @deftypefn Supplemental int strcasecmp (const char *@var{s1}, const char *@var{s2})
 
 @c strcasecmp.c:15
 @deftypefn Supplemental int strcasecmp (const char *@var{s1}, const char *@var{s2})
 


@@ -274,7 +1161,7 @@ Returns a pointer to a copy of @var{s} in memory obtained from
 @end deftypefn
 
 @c strerror.c:670
 @end deftypefn
 
 @c strerror.c:670

-@deftypefn Replacement const char* strerrno (int @var{errnum})
+@deftypefn Replacement {const char*} strerrno (int @var{errnum})

 
 Given an error number returned from a system call (typically returned
 in @code{errno}), returns a pointer to a string containing the
 
 Given an error number returned from a system call (typically returned
 in @code{errno}), returns a pointer to a string containing the


@@ -282,7 +1169,7 @@ symbolic name of that error number, as found in @code{<errno.h>}.
 
 If the supplied error number is within the valid range of indices for
 symbolic names, but no name is available for the particular error
 
 If the supplied error number is within the valid range of indices for
 symbolic names, but no name is available for the particular error

-number, then returns the string @samp{"Error @var{num}"}, where @var{num}
+number, then returns the string @samp{Error @var{num}}, where @var{num}

 is the error number.
 
 If the supplied error number is not within the range of valid
 is the error number.
 
 If the supplied error number is not within the range of valid


@@ -293,8 +1180,8 @@ valid until the next call to @code{strerrno}.
 
 @end deftypefn
 
 
 @end deftypefn
 

-@c strerror.c:602
-@deftypefn Replacement char* strerror (int @var{errnoval})
+@c strerror.c:603
+@deftypefn Supplemental char* strerror (int @var{errnoval})

 
 Maps an @code{errno} number to an error message string, the contents
 of which are implementation defined.  On systems which have the
 
 Maps an @code{errno} number to an error message string, the contents
 of which are implementation defined.  On systems which have the


@@ -303,7 +1190,7 @@ strings will be the same as the ones used by @code{perror}.
 
 If the supplied error number is within the valid range of indices for
 the @code{sys_errlist}, but no message is available for the particular
 
 If the supplied error number is within the valid range of indices for
 the @code{sys_errlist}, but no message is available for the particular

-error number, then returns the string @samp{"Error @var{num}"}, where
+error number, then returns the string @samp{Error @var{num}}, where

 @var{num} is the error number.
 
 If the supplied error number is not a valid index into
 @var{num} is the error number.
 
 If the supplied error number is not a valid index into


@@ -329,6 +1216,15 @@ Compares the first @var{n} bytes of two strings, returning a value as
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c strndup.c:23
+@deftypefn Extension char* strndup (const char *@var{s}, size_t @var{n})
+
+Returns a pointer to a copy of @var{s} with at most @var{n} characters
+in memory obtained from @code{malloc}, or @code{NULL} if insufficient
+memory was available.  The result is always NUL terminated.
+
+@end deftypefn
+

 @c strrchr.c:6
 @deftypefn Supplemental char* strrchr (const char *@var{s}, int @var{c})
 
 @c strrchr.c:6
 @deftypefn Supplemental char* strrchr (const char *@var{s}, int @var{c})
 


@@ -338,6 +1234,46 @@ null character, the results are undefined.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c strsignal.c:383
+@deftypefn Supplemental {const char *} strsignal (int @var{signo})
+
+Maps an signal number to an signal message string, the contents of
+which are implementation defined.  On systems which have the external
+variable @code{sys_siglist}, these strings will be the same as the
+ones used by @code{psignal()}.
+
+If the supplied signal number is within the valid range of indices for
+the @code{sys_siglist}, but no message is available for the particular
+signal number, then returns the string @samp{Signal @var{num}}, where
+@var{num} is the signal number.
+
+If the supplied signal number is not a valid index into
+@code{sys_siglist}, returns @code{NULL}.
+
+The returned string is only guaranteed to be valid only until the next
+call to @code{strsignal}.
+
+@end deftypefn
+
+@c strsignal.c:446
+@deftypefn Extension {const char*} strsigno (int @var{signo})
+
+Given an signal number, returns a pointer to a string containing the
+symbolic name of that signal number, as found in @code{<signal.h>}.
+
+If the supplied signal number is within the valid range of indices for
+symbolic names, but no name is available for the particular signal
+number, then returns the string @samp{Signal @var{num}}, where
+@var{num} is the signal number.
+
+If the supplied signal number is not within the range of valid
+indices, then returns @code{NULL}.
+
+The contents of the location pointed to are only guaranteed to be
+valid until the next call to @code{strsigno}.
+
+@end deftypefn
+

 @c strstr.c:6
 @deftypefn Supplemental char* strstr (const char *@var{string}, const char *@var{sub})
 
 @c strstr.c:6
 @deftypefn Supplemental char* strstr (const char *@var{string}, const char *@var{sub})
 


@@ -352,7 +1288,7 @@ length, the function returns @var{string}.
 @c strtod.c:27
 @deftypefn Supplemental double strtod (const char *@var{string}, char **@var{endptr})
 
 @c strtod.c:27
 @deftypefn Supplemental double strtod (const char *@var{string}, char **@var{endptr})
 

-This ANSI C function converts the initial portion of @var{string} to a
+This ISO C function converts the initial portion of @var{string} to a

 @code{double}.  If @var{endptr} is not @code{NULL}, a pointer to the
 character after the last character used in the conversion is stored in
 the location referenced by @var{endptr}.  If no conversion is
 @code{double}.  If @var{endptr} is not @code{NULL}, a pointer to the
 character after the last character used in the conversion is stored in
 the location referenced by @var{endptr}.  If no conversion is


@@ -361,8 +1297,8 @@ the location referenced by @var{endptr}.
 
 @end deftypefn
 
 
 @end deftypefn
 

-@c strerror.c:730
-@deftypefn Replacement int strtoerrno (const char *@var{name})
+@c strerror.c:729
+@deftypefn Extension int strtoerrno (const char *@var{name})

 
 Given the symbolic name of a error number (e.g., @code{EACCES}), map it
 to an errno value.  If no translation is found, returns 0.
 
 Given the symbolic name of a error number (e.g., @code{EACCES}), map it
 to an errno value.  If no translation is found, returns 0.


@@ -371,6 +1307,7 @@ to an errno value.  If no translation is found, returns 0.
 
 @c strtol.c:33
 @deftypefn Supplemental {long int} strtol (const char *@var{string}, char **@var{endptr}, int @var{base})
 
 @c strtol.c:33
 @deftypefn Supplemental {long int} strtol (const char *@var{string}, char **@var{endptr}, int @var{base})

+@deftypefnx Supplemental {unsigned long int} strtoul (const char *@var{string}, char **@var{endptr}, int @var{base})

 
 The @code{strtol} function converts the string in @var{string} to a
 long integer value according to the given @var{base}, which must be
 
 The @code{strtol} function converts the string in @var{string} to a
 long integer value according to the given @var{base}, which must be


@@ -379,10 +1316,66 @@ is 0, @code{strtol} will look for the prefixes @code{0} and @code{0x}
 to indicate bases 8 and 16, respectively, else default to base 10.
 When the base is 16 (either explicitly or implicitly), a prefix of
 @code{0x} is allowed.  The handling of @var{endptr} is as that of
 to indicate bases 8 and 16, respectively, else default to base 10.
 When the base is 16 (either explicitly or implicitly), a prefix of
 @code{0x} is allowed.  The handling of @var{endptr} is as that of

-@code{strtod} above.
+@code{strtod} above.  The @code{strtoul} function is the same, except
+that the converted value is unsigned.

 
 @end deftypefn
 
 
 @end deftypefn
 

+@c strsignal.c:500
+@deftypefn Extension int strtosigno (const char *@var{name})
+
+Given the symbolic name of a signal, map it to a signal number.  If no
+translation is found, returns 0.
+
+@end deftypefn
+
+@c strverscmp.c:25
+@deftypefun int strverscmp (const char *@var{s1}, const char *@var{s2})
+The @code{strverscmp} function compares the string @var{s1} against
+@var{s2}, considering them as holding indices/version numbers.  Return
+value follows the same conventions as found in the @code{strverscmp}
+function.  In fact, if @var{s1} and @var{s2} contain no digits,
+@code{strverscmp} behaves like @code{strcmp}.
+
+Basically, we compare strings normally (character by character), until
+we find a digit in each string - then we enter a special comparison
+mode, where each sequence of digits is taken as a whole.  If we reach the
+end of these two parts without noticing a difference, we return to the
+standard comparison mode.  There are two types of numeric parts:
+"integral" and "fractional" (those  begin with a '0'). The types
+of the numeric parts affect the way we sort them:
+
+@itemize @bullet
+@item
+integral/integral: we compare values as you would expect.
+
+@item
+fractional/integral: the fractional part is less than the integral one.
+Again, no surprise.
+
+@item
+fractional/fractional: the things become a bit more complex.
+If the common prefix contains only leading zeroes, the longest part is less
+than the other one; else the comparison behaves normally.
+@end itemize
+
+@smallexample
+strverscmp ("no digit", "no digit")
+    @result{} 0    // @r{same behavior as strcmp.}
+strverscmp ("item#99", "item#100")
+    @result{} <0   // @r{same prefix, but 99 < 100.}
+strverscmp ("alpha1", "alpha001")
+    @result{} >0   // @r{fractional part inferior to integral one.}
+strverscmp ("part1_f012", "part1_f01")
+    @result{} >0   // @r{two fractional parts.}
+strverscmp ("foo.009", "foo.0")
+    @result{} <0   // @r{idem, but with leading zeroes only.}
+@end smallexample
+
+This function is especially useful when dealing with filename sorting,
+because filenames frequently hold indices/version numbers.
+@end deftypefun
+

 @c tmpnam.c:3
 @deftypefn Supplemental char* tmpnam (char *@var{s})
 
 @c tmpnam.c:3
 @deftypefn Supplemental char* tmpnam (char *@var{s})
 


@@ -394,6 +1387,47 @@ not be used in new projects.  Use @code{mkstemp} instead.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c unlink-if-ordinary.c:27
+@deftypefn Supplemental int unlink_if_ordinary (const char*)
+
+Unlinks the named file, unless it is special (e.g. a device file).
+Returns 0 when the file was unlinked, a negative value (and errno set) when
+there was an error deleting the file, and a positive value if no attempt
+was made to unlink the file because it is special.
+
+@end deftypefn
+
+@c fopen_unlocked.c:31
+@deftypefn Extension void unlock_std_streams (void)
+
+If the OS supports it, ensure that the standard I/O streams,
+@code{stdin}, @code{stdout} and @code{stderr} are setup to avoid any
+multi-threaded locking.  Otherwise do nothing.
+
+@end deftypefn
+
+@c fopen_unlocked.c:23
+@deftypefn Extension void unlock_stream (FILE * @var{stream})
+
+If the OS supports it, ensure that the supplied stream is setup to
+avoid any multi-threaded locking.  Otherwise leave the @code{FILE}
+pointer unchanged.  If the @var{stream} is @code{NULL} do nothing.
+
+@end deftypefn
+
+@c vasprintf.c:47
+@deftypefn Extension int vasprintf (char **@var{resptr}, const char *@var{format}, va_list @var{args})
+
+Like @code{vsprintf}, but instead of passing a pointer to a buffer,
+you pass a pointer to a pointer.  This function will compute the size
+of the buffer needed, allocate memory with @code{malloc}, and store a
+pointer to the allocated memory in @code{*@var{resptr}}.  The value
+returned is the same as @code{vsprintf} would return.  If memory could
+not be allocated, minus one is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
+

 @c vfork.c:6
 @deftypefn Supplemental int vfork (void)
 
 @c vfork.c:6
 @deftypefn Supplemental int vfork (void)
 


@@ -415,6 +1449,19 @@ nonstandard but common function @code{_doprnt}.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c vsnprintf.c:28
+@deftypefn Supplemental int vsnprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, va_list @var{ap})
+
+This function is similar to vsprintf, but it will print at most
+@var{n} characters.  On error the return value is -1, otherwise it
+returns the number of characters that would have been printed had
+@var{n} been sufficiently large, regardless of the actual value of
+@var{n}.  Note some pre-C99 system libraries do not implement this
+correctly so users cannot generally rely on the return value if the
+system version of this function is used.
+
+@end deftypefn
+

 @c waitpid.c:3
 @deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)
 
 @c waitpid.c:3
 @deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)
 


@@ -513,4 +1560,13 @@ will never return a @code{NULL} pointer.
 
 @end deftypefn
 
 
 @end deftypefn
 

+@c xstrndup.c:23
+@deftypefn Replacement char* xstrndup (const char *@var{s}, size_t @var{n})
+
+Returns a pointer to a copy of @var{s} with at most @var{n} characters
+without fail, using @code{xmalloc} to obtain memory.  The result is
+always NUL terminated.
+
+@end deftypefn
+