remove use of 'NIL'

diff --git a/tclpkg/tclpathplan/find_ints.c b/tclpkg/tclpathplan/find_ints.c
index b4b80f3257258c29ab3cf541d3b65b64f9f59f32..0a739eaa7edf7e0004fc8776cf5ec0d5af551cb3 100644 (file)
--- a/tclpkg/tclpathplan/find_ints.c
+++ b/tclpkg/tclpathplan/find_ints.c
@@ -26,7 +26,7 @@ void find_ints(struct vertex vertex_list[],
     struct vertex *pt1, *pt2, *templ, **pvertex;
 
     input->ninters = 0;
-    all.first = all.final = NIL;
+    all.first = all.final = NULL;
     all.number = 0;
 
     pvertex = malloc((input->nvertices) * sizeof(struct vertex *));
@@ -53,7 +53,7 @@ void find_ints(struct vertex vertex_list[],
                new = malloc(sizeof(struct active_edge));
                if (all.number == 0) {
                    all.first = new;
-                   new->last = NIL;
+                   new->last = NULL;
                } /* insert */
                else {
                    all.final->next = new;
@@ -61,7 +61,7 @@ void find_ints(struct vertex vertex_list[],
                }
 
                new->name = templ;
-               new->next = NIL;
+               new->next = NULL;
                templ->active = new;
                all.final = new;
                all.number++;
@@ -70,26 +70,26 @@ void find_ints(struct vertex vertex_list[],
 
            case 1:             /* backward edge, delete        */
 
-               if ((tempa = templ->active) == NIL) {
+               if ((tempa = templ->active) == NULL) {
                    fprintf(stderr,
                            "\n***ERROR***\n trying to delete a non line\n");
                    exit(1);
                }
                if (all.number == 1)
-                   all.final = all.first = NIL;        /* delete the line */
+                   all.final = all.first = NULL;       /* delete the line */
                else if (tempa == all.first) {
                    all.first = all.first->next;
-                   all.first->last = NIL;
+                   all.first->last = NULL;
                } else if (tempa == all.final) {
                    all.final = all.final->last;
-                   all.final->next = NIL;
+                   all.final->next = NULL;
                } else {
                    tempa->last->next = tempa->next;
                    tempa->next->last = tempa->last;
                }
                free(tempa);
                all.number--;
-               templ->active = NIL;
+               templ->active = NULL;
                break;          /* end of case 1        */
 
            default: