@c and let gather-docs build you a new copy.
@c alloca.c:26
-@deftypefn Replacement void* alloca (size_t)
+@deftypefn Replacement void* alloca (size_t @var{size})
This function allocates memory which will be automatically reclaimed
after the procedure exits. The @libib{} implementation does not free
available this function. The @code{AC_FUNC_ALLOCA} test requires that
client code use a block of preprocessor code to be safe (see the Autoconf
manual for more); this header incorporates that logic and more, including
-the possibility of a GCC builtin function.
+the possibility of a GCC built-in function.
+
+@end deftypefn
+
+@c asprintf.c:33
+@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, zero is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
@end deftypefn
@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}).
comparison function. This routine should take two arguments pointing to
the @var{key} and to an array member, in that order, and should return an
integer less than, equal to, or greater than zero if the @var{key} object
-is respecitively less than, matching, or greater than the array member.
+is respectively less than, matching, or greater than the array member.
+
+@end deftypefn
+
+@c argv.c:139
+@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})
-Zeros @var{count} bytes starting at @var{mem}. Use if this function
+Zeros @var{count} bytes starting at @var{mem}. Use of this function
is deprecated in favor of @code{memset}.
@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 compatability only. Its use is
+not recommended.
+
+@end deftypefn
+
+@c make-temp-file.c:88
+@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 ()
+@deftypefn Supplemental long clock (void)
Returns an approximation of the CPU time used by the process as a
@code{clock_t}; divide this number by @samp{CLOCKS_PER_SEC} to get the
@end deftypefn
+@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:65
+@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:566
-@deftypefn Replacement int errno_max (void)
+@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
should check the size of the table (@code{sys_nerr}) before indexing
it, since new error codes may be added to the system before they are
added to the table. Thus @code{sys_nerr} might be smaller than value
-implied by the largest @code{errno} value defined in @file{errno.h}.
+implied by the largest @code{errno} value defined in @code{<errno.h>}.
We return the maximum value that can be used to obtain a meaningful
symbolic name or message.
@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 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 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 argv.c:111
+@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 getruntime.c:78
+@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}, @var{len})
+@deftypefn Supplemental char* getcwd (char *@var{pathname}, int @var{len})
Copy the absolute pathname for the current working directory into
@var{pathname}, which is assumed to point to a buffer of at least
@var{len} bytes, and return a pointer to the buffer. If the current
directory's path doesn't fit in @var{len} characters, the result is
-NULL and @var{errno} is set. If @var{pathname} is a null pointer,
+@code{NULL} and @code{errno} is set. If @var{pathname} is a null pointer,
@code{getcwd} will obtain @var{len} bytes of space using
@code{malloc}.
@end deftypefn
@c getpagesize.c:5
-@deftypefn Supplemental int getpagesize ()
+@deftypefn Supplemental int getpagesize (void)
Returns the number of bytes in a page of memory. This is the
granularity of many of the system memory management routines. No
@end deftypefn
@c getpwd.c:5
-@deftypefn Supplemental char* getpwd ()
+@deftypefn Supplemental char* getpwd (void)
Returns the current working directory. This implementation caches the
result on the assumption that the process will not call @code{chdir}
@end deftypefn
+@c hex.c:25
+@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}.
+
+@end deftypefn
+
+@c hex.c:33
+@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:41
+@deftypefn Extension int hex_value (int @var{c})
+
+Returns the numeric equivalent of the given character when interpreted
+as a hexidecimal 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.
+
+@end deftypefn
+
@c index.c:5
@deftypefn Supplemental char* index (char *@var{s}, int @var{c})
-Returns a pointer to the first occurance of the character @var{c} in
-the string @var{s}, or NULL if not found. The use of @code{index} is
+Returns a pointer to the first occurrence of the character @var{c} in
+the string @var{s}, or @code{NULL} if not found. The use of @code{index} is
deprecated in new programs in favor of @code{strchr}.
@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 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 make-temp-file.c:138
+@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})
-This function searches memory starting at @code{*}@var{src} for the
+This function searches memory starting at @code{*@var{s}} for the
character @var{c}. The search only ends with the first occurrence of
@var{c}, or after @var{length} characters; in particular, a null
character does not terminate the search. If the character @var{c} is
-found within @var{length} characters of @code{*}@var{src}, a pointer
-to the character is returned. If @var{c} is not found, then NULL is
+found within @var{length} characters of @code{*@var{s}}, a pointer
+to the character is returned. If @var{c} is not found, then @code{NULL} is
returned.
@end deftypefn
@end deftypefn
+@c mkstemps.c:54
+@deftypefn Replacement int mkstemps (char *@var{template}, int @var{suffix_len})
+
+Generate a unique temporary file name from @var{template}.
+@var{template} 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{template} 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.c:67
+@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 flags)
+
+Executes a program.
+
+@var{program} and @var{argv} are the arguments to
+@code{execv}/@code{execvp}.
+
+@var{this_pname} is name of the calling program (i.e., @code{argv[0]}).
+
+@var{temp_base} is the path name, sans suffix, of a temporary file to
+use if needed. This is currently only needed for MS-DOS ports that
+don't use @code{go32} (do any still exist?). Ports that don't need it
+can pass @code{NULL}.
+
+(@code{@var{flags} & PEXECUTE_SEARCH}) is non-zero if @env{PATH} should be searched
+(??? It's not clear that GCC passes this flag correctly). (@code{@var{flags} &
+PEXECUTE_FIRST}) is nonzero for the first process in chain.
+(@code{@var{flags} & PEXECUTE_FIRST}) is nonzero for the last process
+in chain. The first/last flags could be simplified to only mark the
+last of a chain of processes but that requires the caller to always
+mark the last one (and not give up early if some error occurs).
+It's more robust to require the caller to mark both ends of the chain.
+
+The result is the pid on systems like Unix where we
+@code{fork}/@code{exec} and on systems like WIN32 and OS/2 where we
+use @code{spawn}. It is up to the caller to wait for the child.
+
+The result is the @code{WEXITSTATUS} on systems like MS-DOS where we
+@code{spawn} and wait for the child here.
+
+Upon failure, @var{errmsg_fmt} and @var{errmsg_arg} are set to the
+text of the error message with an optional argument (if not needed,
+@var{errmsg_arg} is set to @code{NULL}), and @minus{}1 is returned.
+@code{errno} is available to the caller to use.
+
+@end deftypefn
+
+@c strsignal.c:547
+@deftypefn Supplemental void psignal (unsigned @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})
Uses @code{setenv} or @code{unsetenv} to put @var{string} into
the environment or remove it. If @var{string} is of the form
-@samp{name=value} the string is added; if no `=' is present the
+@samp{name=value} the string is added; if no @samp{=} is present the
name is unset/removed.
@end deftypefn
+@c pexecute.c:104
+@deftypefn Extension int pwait (int @var{pid}, int *@var{status}, int @var{flags})
+
+Waits for a program started by @code{pexecute} to finish.
+
+@var{pid} is the process id of the task to wait for. @var{status} is
+the `status' argument to wait. @var{flags} is currently unused (allows
+future enhancement without breaking upward compatibility). Pass 0 for now.
+
+The result is the pid of the child reaped, or -1 for failure
+(@code{errno} says why).
+
+On systems that don't support waiting for a particular child, @var{pid} is
+ignored. On systems like MS-DOS that don't really multitask @code{pwait}
+is just a mechanism to provide a consistent interface for the caller.
+
+@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:177
+@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 rindex.c:5
@deftypefn Supplemental char* rindex (const char *@var{s}, int @var{c})
-Returns a pointer to the last occurance of the character @var{c} in
-the string @var{s}, or NULL if not found. The use of @code{rindex} is
+Returns a pointer to the last occurrence of the character @var{c} in
+the string @var{s}, or @code{NULL} if not found. The use of @code{rindex} is
deprecated in new programs in favor of @code{strrchr}.
@end deftypefn
@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
+@c strsignal.c:353
+@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})
@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 strcasecmp.c:15
@deftypefn Supplemental int strcasecmp (const char *@var{s1}, const char *@var{s2})
@c strchr.c:6
@deftypefn Supplemental char* strchr (const char *@var{s}, int @var{c})
-Returns a pointer to the first occurance of the character @var{c} in
-the string @var{s}, or NULL if not found. If @var{c} is itself the
+Returns a pointer to the first occurrence of the character @var{c} in
+the string @var{s}, or @code{NULL} if not found. If @var{c} is itself the
null character, the results are undefined.
@end deftypefn
@deftypefn Supplemental char* strdup (const char *@var{s})
Returns a pointer to a copy of @var{s} in memory obtained from
-@code{malloc}, or NULL if insufficient memory was available.
+@code{malloc}, or @code{NULL} if insufficient memory was available.
@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
-symbolic name of that error number, as found in @file{errno.h}.
+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
-number, then returns the string @samp{"Error NUM"}, where NUM is the
-error number.
+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
-indices, then returns NULL.
+indices, then returns @code{NULL}.
The contents of the location pointed to are only guaranteed to be
-valid until the next call to strerrno.
+valid until the next call to @code{strerrno}.
@end deftypefn
@c strerror.c:602
-@deftypefn Replacement char* strerror (int @var{errnoval})
+@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
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 NUM"}, where NUM is
-the error number.
+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
-@code{sys_errlist}, returns NULL.
+@code{sys_errlist}, returns @code{NULL}.
The returned string is only guaranteed to be valid only until the
next call to @code{strerror}.
@c strrchr.c:6
@deftypefn Supplemental char* strrchr (const char *@var{s}, int @var{c})
-Returns a pointer to the last occurance of the character @var{c} in
-the string @var{s}, or NULL if not found. If @var{c} is itself the
+Returns a pointer to the last occurrence of the character @var{c} in
+the string @var{s}, or @code{NULL} if not found. If @var{c} is itself the
null character, the results are undefined.
@end deftypefn
+@c strsignal.c:388
+@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:452
+@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})
This function searches for the substring @var{sub} in the string
-@var{string}, not including the terminating NUL characters. A pointer
-to the first occurance of @var{sub} is returned, or NULL if the
+@var{string}, not including the terminating null characters. A pointer
+to the first occurrence of @var{sub} is returned, or @code{NULL} if the
substring is absent. If @var{sub} points to a string with zero
length, the function returns @var{string}.
@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
-@code{double}. If @var{endptr} is not NULL, a pointer to the
+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
performed, zero is returned and the value of @var{string} is stored in
@end deftypefn
@c strerror.c:730
-@deftypefn Replacement int strtoerrno (const char *@var{name})
+@deftypefn Extension int strtoerrno (const char *@var{name})
-Given the symbolic name of a error number (e.g., @code{EACCESS}), map it
+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.
@end deftypefn
@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
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 endptr is as that of
-@code{strtod} above.
+@code{0x} is allowed. The handling of @var{endptr} is as that of
+@code{strtod} above. The @code{strtoul} function is the same, except
+that the converted value is unsigned.
+
+@end deftypefn
+
+@c strsignal.c:507
+@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
This function attempts to create a name for a temporary file, which
will be a valid file name yet not exist when @code{tmpnam} checks for
it. @var{s} must point to a buffer of at least @code{L_tmpnam} bytes,
-or be NULL. Use of this function creates a security risk, and it must
+or be @code{NULL}. Use of this function creates a security risk, and it must
not be used in new projects. Use @code{mkstemp} instead.
@end deftypefn
+@c vasprintf.c:48
+@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, zero is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
+
@c vfork.c:6
-@deftypefn Supplemental int vfork ()
+@deftypefn Supplemental int vfork (void)
Emulates @code{vfork} by calling @code{fork} and returning its value.
@deftypefun int xatexit (void (*@var{fn}) (void))
Behaves as the standard @code{atexit} function, but with no limit on
-the number of registered funtions. Returns 0 on success, or -1 on
+the number of registered functions. Returns 0 on success, or @minus{}1 on
failure. If you use @code{xatexit} to register functions, you must use
@code{xexit} to terminate your program.
@end deftypefun
-@c xmalloc.c:37
-@deftypefn Replacement void* xcalloc (size_t, size_t)
+@c xmalloc.c:38
+@deftypefn Replacement void* xcalloc (size_t @var{nelem}, size_t @var{elsize})
Allocate memory without fail, and set it to zero. This routine functions
like @code{calloc}, but will behave the same as @code{xmalloc} if memory
@deftypefn Replacement void xexit (int @var{code})
Terminates the program. If any functions have been registered with
-the @code{xatexit} rpelacement function, they will be called first.
+the @code{xatexit} replacement function, they will be called first.
Termination is handled via the system's normal @code{exit} call.
@end deftypefn
@deftypefn Replacement void* xmalloc (size_t)
Allocate memory without fail. If @code{malloc} fails, this will print
-a message to stderr (using the name set by @code{xmalloc_set_program_name},
+a message to @code{stderr} (using the name set by
+@code{xmalloc_set_program_name},
if any) and then call @code{xexit}. Note that it is therefore safe for
a program to contain @code{#define malloc xmalloc} in its source.
@end deftypefn
-@c xmalloc.c:52
+@c xmalloc.c:53
@deftypefn Replacement void xmalloc_failed (size_t)
This function is not meant to be called by client code, and is listed
@end deftypefn
-@c xmalloc.c:45
+@c xmalloc.c:46
@deftypefn Replacement void xmalloc_set_program_name (const char *@var{name})
You can use this to set the name of the program used by
@end deftypefn
-@c xmalloc.c:31
-@deftypefn Replacement void* xrealloc (void*, size_t)
+@c xmalloc.c:32
+@deftypefn Replacement void* xrealloc (void *@var{ptr}, size_t @var{size})
Reallocate memory without fail. This routine functions like @code{realloc},
but will behave the same as @code{xmalloc} if memory cannot be found.
@deftypefn Replacement char* xstrerror (int @var{errnum})
Behaves exactly like the standard @code{strerror} function, but
-will never return a NULL pointer.
+will never return a @code{NULL} pointer.
@end deftypefn
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