Function test_pruning

external/eigen/test/sparse_vector.cpp:177–201

}
void test_pruning() {
    using SparseVectorType = SparseVector<double, 0, int>;

    SparseVectorType vec;
    auto init_vec = [&](){;
        vec.resize(10);
        vec.insert(3) = 0.1;
        vec.insert(5) = 1.0;
        vec.insert(8) = -0.1;
        vec.insert(9) = -0.2;
    };
    init_vec();

    VERIFY_IS_EQUAL(vec.nonZeros(), 4);
    VERIFY_IS_EQUAL(vec.prune(0.1, 1.0), 2);
    VERIFY_IS_EQUAL(vec.nonZeros(), 2);
    VERIFY_IS_EQUAL(vec.coeff(5), 1.0);
    VERIFY_IS_EQUAL(vec.coeff(9), -0.2);

    init_vec();
    VERIFY_IS_EQUAL(vec.prune([](double v) { return v >= 0; }), 2);
    VERIFY_IS_EQUAL(vec.nonZeros(), 2);
    VERIFY_IS_EQUAL(vec.coeff(3), 0.1);
    VERIFY_IS_EQUAL(vec.coeff(5), 1.0);
}

EIGEN_DECLARE_TEST(sparse_vector)
{