[utils] Add ply_round_to_multiple macro

We'll need something like this for rowstride calculation

diff --git a/src/libply/ply-utils.h b/src/libply/ply-utils.h
index 592a8e4e439ea38ccf9a429ef1fbf5a30b464d37..5e41f841b6b36cd8cc04ea03d23680672c766053 100644 (file)
--- a/src/libply/ply-utils.h
+++ b/src/libply/ply-utils.h
@@ -46,6 +46,9 @@ typedef void (* ply_module_function_t) (void);
 typedef intptr_t ply_daemon_handle_t;
 
 #ifndef PLY_HIDE_FUNCTION_DECLARATIONS
+
+#define ply_round_to_multiple(n, m) (((n) + (((m) - 1))) & ~((m) - 1))
+
 bool ply_open_unidirectional_pipe (int *sender_fd,
                                    int *receiver_fd);
 int ply_connect_to_unix_socket (const char *path,