Index: trunk/src/obj_subc.c
===================================================================
--- trunk/src/obj_subc.c	(revision 13526)
+++ trunk/src/obj_subc.c	(revision 13527)
@@ -983,6 +983,16 @@
 	return pcb_subc_op(data, sc, &RotateFunctions, ctx);
 }
 
+void pcb_subc_rotate90(pcb_subc_t *subc, pcb_coord_t cx, pcb_coord_t cy, int steps)
+{
+	pcb_opctx_t ctx;
+
+	ctx.rotate.center_x = cx;
+	ctx.rotate.center_y = cy;
+	ctx.rotate.number = steps;
+	pcb_subcop_rotate(&ctx, subc);
+}
+
 void pcb_subc_rotate(pcb_subc_t *subc, pcb_coord_t cx, pcb_coord_t cy, double cosa, double sina, double angle)
 {
 	pcb_opctx_t ctx;
Index: trunk/src/obj_subc.h
===================================================================
--- trunk/src/obj_subc.h	(revision 13526)
+++ trunk/src/obj_subc.h	(revision 13527)
@@ -66,6 +66,7 @@
 pcb_bool pcb_subc_change_side(pcb_subc_t **subc, pcb_coord_t yoff);
 
 void pcb_subc_rotate(pcb_subc_t *subc, pcb_coord_t cx, pcb_coord_t cy, double cosa, double sina, double angle);
+void pcb_subc_rotate90(pcb_subc_t *subc, pcb_coord_t cx, pcb_coord_t cy, int steps);
 
 /* High level move (op wrapper; no undo) */
 void pcb_subc_move(pcb_subc_t *sc, pcb_coord_t dx, pcb_coord_t dy, pcb_bool more_to_come);