77         auto grad_error = compare_gradients(src_grad, grad_src);  in test_tanh()  local
78         dlog << LINFO << "src error: " << grad_error;  in test_tanh()
79         DLIB_TEST(grad_error < 0.001);  in test_tanh()
113         auto grad_error = compare_gradients(src_grad, grad_src);  in test_sigmoid()  local
114         dlog << LINFO << "src error: " << grad_error;  in test_sigmoid()
115         DLIB_TEST(grad_error < 0.001);  in test_sigmoid()
153         auto grad_error = compare_gradients(src_grad, grad_src);  in test_softmax()  local
154         dlog << LINFO << "src error: " << grad_error;  in test_softmax()
155         DLIB_TEST(grad_error < 0.001);  in test_softmax()
204         auto grad_error = compare_gradients(src_grad, grad_src);  in test_softmax_all()  local
205         dlog << LINFO << "src error: " << grad_error;  in test_softmax_all()
206         DLIB_TEST(grad_error < 0.001);  in test_softmax_all()
370         auto grad_error = compare_gradients(src_grad, grad_src);  in test_batch_normalize()  local
371         dlog << LINFO << "src error: " << grad_error;  in test_batch_normalize()
372         DLIB_TEST(grad_error < 0.001);  in test_batch_normalize()
374         grad_error = compare_gradients(gamma_grad, grad_gamma);  in test_batch_normalize()
375         dlog << LINFO << "gamma error: " << grad_error;  in test_batch_normalize()
376         DLIB_TEST(grad_error < 0.001);  in test_batch_normalize()
378         grad_error = compare_gradients(beta_grad, grad_beta);  in test_batch_normalize()
379         dlog << LINFO << "beta error: " << grad_error;  in test_batch_normalize()
380         DLIB_TEST(grad_error < 0.001);  in test_batch_normalize()
459         auto grad_error = compare_gradients(src_grad, grad_src);  in test_batch_normalize_conv()  local
460         dlog << LINFO << "src error: " << grad_error;  in test_batch_normalize_conv()
461         DLIB_TEST(grad_error < 0.001);  in test_batch_normalize_conv()
463         grad_error = compare_gradients(gamma_grad, grad_gamma);  in test_batch_normalize_conv()
464         dlog << LINFO << "gamma error: " << grad_error;  in test_batch_normalize_conv()
465         DLIB_TEST(grad_error < 0.001);  in test_batch_normalize_conv()
467         grad_error = compare_gradients(beta_grad, grad_beta);  in test_batch_normalize_conv()
468         dlog << LINFO << "beta error: " << grad_error;  in test_batch_normalize_conv()
469         DLIB_TEST(grad_error < 0.001);  in test_batch_normalize_conv()