inline vec<u8, N> random_bits(random_bit_generator& gen)
{
constexpr size_t N2 = prev_poweroftwo(N - 1);
const vec<u8, N2> bits1 = random_bits<N2>(gen);
const vec<u8, N - N2> bits2 = random_bits<N - N2>(gen);
return concat(bits1, bits2);
}
void test_expression(const E& expr, size_t size, Fn&& fn, const char* expression = nullptr)
{
using T = value_type_of<E>;
::testo::test_case* test = ::testo::active_test();
auto&& c = ::testo::make_comparison();
test->check(c <= expr.size() == size, expression);
if (expr.size() != size)
return;
size = size_min(size, 200);
constexpr size_t maxsize = 2 + ilog2(vector_width<T> * 2);
for (size_t i = 0; i < size;)
{
const size_t next_size =
std::min(prev_poweroftwo(size - i), static_cast<size_t>(1) << (std::rand() % maxsize));
cswitch(csize<1> << csizeseq<maxsize>, next_size, [&](auto x) {
constexpr size_t nsize = val_of(decltype(x)());
::testo::scope s(as_string("i = ", i));
test->check(c <= get_elements(expr, cinput, i, vec_shape<T, nsize>()) ==
internal::get_fn_value<T, nsize>(i, fn),
expression);
});
i += next_size;
}
}
