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-rw-r--r--lib/libalpm/alpm_list.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/libalpm/alpm_list.c b/lib/libalpm/alpm_list.c
index c2b30adc..1976e13d 100644
--- a/lib/libalpm/alpm_list.c
+++ b/lib/libalpm/alpm_list.c
@@ -556,6 +556,24 @@ inline alpm_list_t SYMEXPORT *alpm_list_next(const alpm_list_t *node)
}
/**
+ * @brief Get the previous element of a list.
+ *
+ * @param list the list head
+ * @param node the list node
+ *
+ * @return the previous element, or NULL when no previous element exist
+ */
+inline alpm_list_t SYMEXPORT *alpm_list_previous(const alpm_list_t *list,
+ const alpm_list_t *node)
+{
+ if(node && node != list) {
+ return node->prev;
+ } else {
+ return NULL;
+ }
+}
+
+/**
* @brief Get the last item in the list.
*
* @param list the list