Function assert_uniform_correct

dnn/test/naive/rng.cpp:11–19

template <typename ctype>
void assert_uniform_correct(const ctype* src, size_t size) {
    for (size_t i = 0; i < size; ++i) {
        ASSERT_GT(src[i], ctype(0));
        ASSERT_LE(src[i], ctype(1));
    }
    auto stat = get_mean_var(src, size, ctype(0.5));
    ASSERT_LE(std::abs(stat.first - 0.5), 1e-3);
    ASSERT_LE(std::abs(stat.second - 1.0 / 12), 1e-3);
}

namespace {
template <typename dtype>