自学教程：C++ CHECK_VALUE函数代码示例

AL_API ALvoid AL_APIENTRY alListenerf(ALenum param, ALfloat value){    ALCcontext *Context;    Context = GetContextRef();    if(!Context) return;    al_try    {        switch(param)        {            case AL_GAIN:                CHECK_VALUE(Context, value >= 0.0f && isfinite(value));                Context->Listener->Gain = value;                Context->UpdateSources = AL_TRUE;                break;            case AL_METERS_PER_UNIT:                CHECK_VALUE(Context, value >= 0.0f && isfinite(value));                Context->Listener->MetersPerUnit = value;                Context->UpdateSources = AL_TRUE;                break;            default:                al_throwerr(Context, AL_INVALID_ENUM);        }    }    al_endtry;    ALCcontext_DecRef(Context);}

/*  test that a server responds correctly to attempted registrations of its name*/static bool nbt_register_own(struct torture_context *tctx){	struct nbt_name_register io;	NTSTATUS status;	struct nbt_name_socket *nbtsock = nbt_name_socket_init(tctx, NULL);	struct socket_address *socket_address;	struct nbt_name name;	const char *address;	const char *myaddress;	if (!torture_nbt_get_name(tctx, &name, &address))		return false;	myaddress = iface_best_ip(address);	socket_address = socket_address_from_strings(tctx, nbtsock->sock->backend_name,						     myaddress, 0);	torture_assert(tctx, socket_address != NULL, "Unable to get address");	status = socket_listen(nbtsock->sock, socket_address, 0, 0);	torture_assert_ntstatus_ok(tctx, status, 				"socket_listen for nbt_register_own failed");	torture_comment(tctx, "Testing name defense to name registration/n");	io.in.name = name;	io.in.dest_addr = address;	io.in.address = myaddress;	io.in.nb_flags = NBT_NODE_B | NBT_NM_ACTIVE;	io.in.register_demand = False;	io.in.broadcast = True;	io.in.multi_homed = False;	io.in.ttl = 1234;	io.in.timeout = 3;	io.in.retries = 0;		status = nbt_name_register(nbtsock, tctx, &io);	torture_assert_ntstatus_ok(tctx, status, 				talloc_asprintf(tctx, "Bad response from %s for name register",		       address));		CHECK_STRING(tctx, io.out.name.name, name.name);	CHECK_VALUE(tctx, io.out.name.type, name.type);	CHECK_VALUE(tctx, io.out.rcode, NBT_RCODE_ACT);	/* check a register demand */	io.in.address = myaddress;	io.in.register_demand = True;	status = nbt_name_register(nbtsock, tctx, &io);	torture_assert_ntstatus_ok(tctx, status, 				talloc_asprintf(tctx, "Bad response from %s for name register demand", address));		CHECK_STRING(tctx, io.out.name.name, name.name);	CHECK_VALUE(tctx, io.out.name.type, name.type);	CHECK_VALUE(tctx, io.out.rcode, NBT_RCODE_ACT);	return true;}

/* *  アラ
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C++ CHECK_VALID函数代码示例