1 files changed, 2 insertions, 0 deletions
diff --git a/src/cell.h b/src/cell.h
index 17990e2c..09d9144d 100644
--- a/src/cell.h
+++ b/src/cell.h
@@ -80,6 +80,8 @@ extern double resolution(UnitCell *cell,
                          signed int h, signed int k, signed int l);
 
 extern UnitCell *cell_rotate(UnitCell *in, struct quaternion quat);
+extern UnitCell *rotate_cell(UnitCell *in, double omega, double phi,
+                             double rot);
 
 extern void cell_print(UnitCell *cell);