addchain(3) - Linux man page
Name
addchain - create a chain and add it to a list
Synopsys
#include "mut.h" chain_list ∗addchain(pthead, ptdata) chain_list ∗pthead; void ∗ptdata;
Parameters
- pthead
Pointer to a chain_list
ptdata
Generic pointer to any kind of information
Description
addchain creates a new chain element and adds it to the front of the list pointed to by pthead, and becomes itself the list head.
The chain_lists are mosty used to create temporary lists of homogeneous elements, for binary trees, and so on.
The ptdata points to any kind of list or may itself be a value, if proper cast is performed at compilation time, and fills the DATA field of the
chain structure. For details on the structure, see chain(3).
Return Value
addchain returns a pointer to the new head of list.
Example
#include "mut.h"
#include "mlo.h"
chain_list ∗get_external_connectors(ptfig)
lofig_list ∗ptfig;
{
locon_list ∗pt = ptfig->LOCON;
chain_list ∗c = NULL; /∗ initialized for regularity ∗/
while (pt) {
if (pt->TYPE == EXTERNAL)
c = addchain(c, (void ∗)pt)
pt = pt->NEXT;
}
return c;
- }
See Also
mbk(1), chain(3), freechain(3), delchain(3).