39 	retstack->top = 0;  in pt_retstack_init()
48 	return (retstack->top == retstack->bottom ? 1 : 0);  in pt_retstack_is_empty()
53 	uint8_t top;  in pt_retstack_pop()  local
58 	top = retstack->top;  in pt_retstack_pop()
60 	if (top == retstack->bottom)  in pt_retstack_pop()
63 	top = (!top ? pt_retstack_size : top - 1);  in pt_retstack_pop()
65 	retstack->top = top;  in pt_retstack_pop()
68 		*ip = retstack->stack[top];  in pt_retstack_pop()
75 	uint8_t top, bottom;  in pt_retstack_push()  local
80 	top = retstack->top;  in pt_retstack_push()
83 	retstack->stack[top] = ip;  in pt_retstack_push()
85 	top = (top == pt_retstack_size ? 0 : top + 1);  in pt_retstack_push()
87 	if (bottom == top)  in pt_retstack_push()
90 	retstack->top = top;  in pt_retstack_push()