1/* 2 * Copyright 2017, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12 13#pragma once 14 15/* Macros relevant for verification. */ 16 17#include <assert.h> 18 19/* This induces a guard containing the given expression in the lifted 20 * specification of your function in Isabelle. You can think of this as an 21 * assertion that is also visible (and necessary to prove) in Isabelle. 22 */ 23#define GUARD(x) \ 24 do { \ 25 assert(x); \ 26 if (!(x)) { \ 27 for (;;); \ 28 } \ 29 } while (0) 30