Add a set of structure and functions to manage intervals of integers

1 files changed, 5 insertions, 0 deletions

diff --git a/smenu.h b/smenu.h
index d491f89..8226bfd 100644
--- a/smenu.h
+++ b/smenu.h
@@ -26,6 +26,7 @@ typedef struct word_s word_t;
 typedef struct txt_attr_s txt_attr_t;
 typedef struct limits_s limits_t;
 typedef struct sed_s sed_t;
+typedef struct interval_s interval_t;
 
 void help(win_t * win, term_t * term, int last_line);
 void short_usage(void);
@@ -35,6 +36,10 @@ void *xmalloc(size_t size);
 void *xcalloc(size_t num, size_t size);
 void *xrealloc(void *ptr, size_t size);
 
+interval_t *interval_new(void);
+int interval_comp(void *a, void *b);
+void interval_swap(void *a, void *b);
+
 int ll_append(ll_t * const list, void *const data);
 int ll_prepend(ll_t * const list, void *const data);
 void ll_insert_before(ll_t * const list, ll_node_t * node, void *const data);