created why2_allocated fn

checks for why2-mem allocation

include/memory.h

@@ -23,6 +23,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 extern "C" {
 #endif
 
+#include <why2/flags.h>
+
 void *why2_malloc(unsigned long size);
 void *why2_calloc(unsigned long element, unsigned long size);
 void *why2_realloc(void *pointer, unsigned long size);
@@ -37,6 +39,8 @@ void why2_deallocate(void *pointer);
 
 void why2_clean_memory(char *identifier); //identifier SPECIFIES WHICH NODES TO DEALLOCATE | THIS IS BASICALLY GARBAGE COLLECTOR | PASS why2_get_default_memory_identifier() FOR DEALLOCATING EVERYTHING
 
+why2_bool why2_allocated(void *pointer); //CHECKS IF pointer WAS ALLOCATED USING WHY2-MEM
+
 #ifdef __cplusplus
 }
 #endif

src/core/lib/utils/memory.c

@@ -241,3 +241,8 @@ void why2_clean_memory(char *identifier)
 
     why2_reset_memory_identifier(); //THIS WILL CAUSE SEGFAULT IF YOU DIDN'T USE why2_set_memory_identifier
 }
+
+why2_bool why2_allocated(void *pointer)
+{
+    return get_node(pointer) != NULL;
+}