impl resarr_swap_quick()

2 files changed, 16 insertions, 0 deletions

diff --git a/inc/resarr.h b/inc/resarr.h
index e3b853f..0a4ed23 100644
--- a/inc/resarr.h
+++ b/inc/resarr.h
@@ -22,6 +22,7 @@ int resarr_insert(stype_resarr *arr, void *elem, size_t before, size_t count);
 int resarr_insert_single(stype_resarr *arr, void *elem, size_t before);
 int resarr_delete(stype_resarr *arr, size_t start, size_t end);
 int resarr_swap(stype_resarr *first, stype_resarr *second);
+int resarr_quick_swap(stype_resarr *first, stype_resarr *second);
 int resarr_clear(stype_resarr *arr);
 int resarr_destroy(stype_resarr *arr);
 
diff --git a/src/resarr.c b/src/resarr.c
index a597d86..a359d71 100644
--- a/src/resarr.c
+++ b/src/resarr.c
@@ -99,6 +99,21 @@ int resarr_swap(stype_resarr *first, stype_resarr *second) {
 	return 0;
 }
 
+int resarr_swap_quick(stype_resarr *first, stype_resarr *second) {
+	if (first == NULL || second == NULL) return -1;
+	if (first->elemsize != second->elemsize) return -1;
+	size_t size = first->elemcount;
+	size_t alloc = first->allocsize;
+	void *array = first->array;
+	first->elemcount = second->elemcount;
+	first->allocsize = second->allocsize;
+	first->array = second->array;
+	second->elemcount = size;
+	second->allocsize = alloc;
+	second->array = array;
+	return 0;
+}
+
 int resarr_clear(stype_resarr *arr) {
 	if (arr == NULL) return -1;
 	memset(