@c Edit the *.c files, configure with --enable-maintainer-mode,
@c and let gather-docs build you a new copy.
+@c safe-ctype.c:24
+@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})
@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, 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})())
@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})
@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 (void)
@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
@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: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})
@end deftypefn
+@c hex.c:30
+@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:39
+@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:47
+@deftypefn Extension unsigned 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.
+
+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})
@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:45
+@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:94
+@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: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})
@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})
@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.txh:1
+@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})
@end deftypefn
+@c pexecute.txh:39
+@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})
@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 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})
@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
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
@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 @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
@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})
@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{EACCES}), map it
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})
+@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
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
+
+@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
@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, minus one is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
+
@c vfork.c:6
@deftypefn Supplemental int vfork (void)
@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)
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