Function require_close

tests/unittests/test_torch_random.cpp:12–18

namespace {

void require_close(float actual, float expected, float tolerance, const char * label) {
    if (std::fabs(actual - expected) > tolerance) {
        throw std::runtime_error(
            std::string(label) + " mismatch: expected " + std::to_string(expected) +
            ", got " + std::to_string(actual));
    }
}

void require_vector_close(
    const std::vector<float> & actual,