mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-30 09:34:51 +08:00
aac04c15d7
* Makefile.in (TEXIFILES): Add fnmatch.txh. (maint-undoc): New. maint-tool: Add "undoc" tool. * alloca.c, argv.c, asprintf.c, choose-temp.c, concat.c, fdmatch.c, ffs.c, getruntime.c, insque.c, lbasename.c, make-temp-file.c, mkstemps.c, pexecute.c, random.c, spaces.c, strerror.s, strsignal.c, strtol.c, vasprintf.c: Add or update documentation. * fnmatch.txh: New. * functions.texi: Regenerate. From-SVN: r46274
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
/* insque(3C) routines
|
|
This file is in the public domain. */
|
|
|
|
/*
|
|
|
|
@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
|
|
|
|
*/
|
|
|
|
|
|
struct qelem {
|
|
struct qelem *q_forw;
|
|
struct qelem *q_back;
|
|
};
|
|
|
|
|
|
void
|
|
insque (elem, pred)
|
|
struct qelem *elem;
|
|
struct qelem *pred;
|
|
{
|
|
elem -> q_forw = pred -> q_forw;
|
|
pred -> q_forw -> q_back = elem;
|
|
elem -> q_back = pred;
|
|
pred -> q_forw = elem;
|
|
}
|
|
|
|
|
|
void
|
|
remque (elem)
|
|
struct qelem *elem;
|
|
{
|
|
elem -> q_forw -> q_back = elem -> q_back;
|
|
elem -> q_back -> q_forw = elem -> q_forw;
|
|
}
|