xbt_dynar_is_empty to check if a dynar is empty or not

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@7881 48e7efb5-ca39-0410-a469-dd3cf9ba447f

diff --git a/include/xbt/dynar.h b/include/xbt/dynar.h
index 3dc0bd2..2ddcfb5 100644 (file)
--- a/include/xbt/dynar.h
+++ b/include/xbt/dynar.h
@@ -71,6 +71,7 @@ XBT_PUBLIC(void) xbt_dynar_free_voidp(void *dynar);
 XBT_PUBLIC(void) xbt_dynar_free_container(xbt_dynar_t * dynar);
 
 XBT_INLINE XBT_PUBLIC(unsigned long) xbt_dynar_length(const xbt_dynar_t dynar);
+XBT_INLINE XBT_PUBLIC (int) xbt_dynar_is_empty(const xbt_dynar_t dynar);
 XBT_PUBLIC(void) xbt_dynar_reset(xbt_dynar_t const dynar);
 XBT_PUBLIC(void) xbt_dynar_shrink(xbt_dynar_t dynar, int empty_slots);
 

diff --git a/src/xbt/dynar.c b/src/xbt/dynar.c
index 14c1df7..5770d7c 100644 (file)
--- a/src/xbt/dynar.c
+++ b/src/xbt/dynar.c
@@ -335,6 +335,16 @@ XBT_INLINE unsigned long xbt_dynar_length(const xbt_dynar_t dynar)
   return (dynar ? (unsigned long) dynar->used : (unsigned long) 0);
 }
 
+/**@brief check if a dynar is empty
+ *
+ *\param dynar the dynat we want to check
+ */
+
+XBT_INLINE int xbt_dynar_is_empty(const xbt_dynar_t dynar)
+{
+       return (xbt_dynar_length(dynar) == 0);
+}
+
 /** @brief Retrieve a copy of the Nth element of a dynar.
  *
  * \param dynar information dealer