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Man Pages


Manual Reference Pages  -  DELCHAIN (3)

[Include document man1/alc_contents.mac]

   delchain    delchain

NAME

delchain - delete an element of a chain_list

[Include document man1/alc_origin.1]

CONTENTS

Synopsys
Parameters
Description
Return Value
Error
Example
See Also

SYNOPSYS






#include "mut.h"
chain_list *delchain(pthead, ptdel)
chain_list *pthead;
chain_list *ptdel;


PARAMETERS

pthead Pointer to a chain list
ptdel Pointer to the element to be deleted.

DESCRIPTION

delchain deletes the element of the chain_list pointed to by ptdel in the list pointed to by pthead. The list consistency is maintainded, and the element put back in the list of free blocks.

RETURN VALUE

delchain returns a pointer to the new head of list if the ptdel pointer used to belong to the list. In most case, it has the value of pthead. If the pointer doesn’t belong to the list, NULL is returned.

ERROR

"*** mbk error *** delchain impossible : pointer NULL"
At least one of the arguments are pointing to NULL, and that clear that such a pointer can’t be deleted, or used for freeing.

EXAMPLE






#include "mut.h"
void delete_match(c0, c1)
chain_list *c0, *c1;
{
chain_list *t0, *t1, *next;
   for (t0 = c0; t0; t0 = next)
      for (t1 = c1; t1; t1 = t1->NEXT)
         if (t1->DATA == t0->DATA)
            next = delchain(c0, t0);
}


SEE ALSO

mbk(1), chain(3), addchain(3), freechain(3).

[Include document man1/alc_bug_report.1]

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ASIM/LIP6 DELCHAIN (3) October 1, 1997

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