Update the tests

test/data_type/failing_test.cpp

@@ -14,6 +14,8 @@ TEST(FailingTest, FP8)
 {
     // fix the tolerance value
     float abs_tol = 1e-6;
+    // convert 0 float to fp8 and back, check if holds
+    ASSERT_NEAR(0.0f, type_convert<float>(f8_convert_rne<f8_t>(0.0f)), abs_tol);
     // convert minimal float to fp8 and back, check if holds
     ASSERT_NEAR(std::numeric_limits<float>::min(),
                 type_convert<float>(f8_convert_rne<f8_t>(std::numeric_limits<float>::min())),
@@ -24,6 +26,8 @@ TEST(FailingTest, BF8)
 {
     // fix the tolerance value
     float abs_tol = 1e-6;
+    // convert 0 float to bf8 and back, check if holds
+    ASSERT_NEAR(0.0f, type_convert<float>(f8_convert_rne<bf8_t>(0.0f)), abs_tol);
     // convert minimal float to bf8 and back, check if holds
     ASSERT_NEAR(std::numeric_limits<float>::min(),
                 type_convert<float>(f8_convert_rne<bf8_t>(std::numeric_limits<float>::min())),