21 using std::abs;
43     BOOST_TEST(abs(hs - 1) < tol);  in test_hoyer_sparsity()
46     BOOST_TEST(abs(hs - 1) < tol);  in test_hoyer_sparsity()
50     BOOST_TEST(abs(hs - 1) < tol);  in test_hoyer_sparsity()
56     BOOST_TEST(abs(hs) < tol);  in test_hoyer_sparsity()
60     BOOST_TEST(abs(hs) < tol);  in test_hoyer_sparsity()
74     BOOST_TEST(abs(expected - hs) < 0.01);  in test_hoyer_sparsity()
79     BOOST_TEST(abs(hs) < tol);  in test_hoyer_sparsity()
87     BOOST_TEST(abs(hs) < tol);  in test_hoyer_sparsity()
98     BOOST_TEST(abs(hs - 1) < tol);  in test_integer_hoyer_sparsity()
104     BOOST_TEST(abs(hs) < tol);  in test_integer_hoyer_sparsity()
116     BOOST_TEST(abs(hs - 1) < tol);  in test_complex_hoyer_sparsity()
119     BOOST_TEST(abs(hs - 1) < tol);  in test_complex_hoyer_sparsity()
123     BOOST_TEST(abs(hs - 1) < tol);  in test_complex_hoyer_sparsity()
130     BOOST_TEST(abs(hs) < tol);  in test_complex_hoyer_sparsity()
142     BOOST_TEST(abs(gini - 1) < tol);  in test_absolute_gini_coefficient()
145     BOOST_TEST(abs(gini - Real(2)/Real(3)) < tol);  in test_absolute_gini_coefficient()
151     BOOST_TEST(abs(gini) < tol);  in test_absolute_gini_coefficient()
153     BOOST_TEST(abs(gini) < tol);  in test_absolute_gini_coefficient()
162     BOOST_TEST(abs(gini) < tol);  in test_absolute_gini_coefficient()
164     BOOST_TEST(abs(gini) < tol);  in test_absolute_gini_coefficient()
182     BOOST_TEST(abs(population_gini1 - population_gini2) < 10*tol);  in test_absolute_gini_coefficient()
187     BOOST_TEST(abs(expected - population_gini1) < 0.01);  in test_absolute_gini_coefficient()
196     BOOST_TEST(abs(population_gini2 - 0.5) < 0.01);  in test_absolute_gini_coefficient()
203     using std::abs;  in test_oracle_snr()
212     BOOST_TEST(abs(snr - length) < tol);  in test_oracle_snr()
213     BOOST_TEST(abs(snr_db - 10*log10(length)) < tol);  in test_oracle_snr()
227     BOOST_TEST(abs(snr - length) < tol);  in test_integer_oracle_snr()
228     BOOST_TEST(abs(snr_db - 10*log10(length)) < tol);  in test_integer_oracle_snr()
235     using std::abs;  in test_complex_oracle_snr()
245     BOOST_TEST(abs(snr - length) < tol);  in test_complex_oracle_snr()
246     BOOST_TEST(abs(snr_db - 10*log10(length)) < tol);  in test_complex_oracle_snr()
267     BOOST_TEST(abs(m2m4_db - oracle_snr_db) < 0.2);  in test_m2m4_snr_estimator()
279     BOOST_TEST(abs(m2m4_db - oracle_snr_db) < 0.2);  in test_m2m4_snr_estimator()
291     BOOST_TEST(abs(m2m4 - m2m4_2) < tol);  in test_m2m4_snr_estimator()