iox-eclipse-iceoryx#2055 Set new digits for aarch64

Signed-off-by: Dennis Liu <[email protected]>

iceoryx_hoofs/test/moduletests/test_utility_convert.cpp

@@ -45,9 +45,28 @@ class convert_test : public Test
         static_assert(std::is_floating_point<T>::value, "fp_to_string requires floating point type");
 
         std::ostringstream oss;
-        oss << std::scientific << std::setprecision(std::numeric_limits<T>::max_digits10) << value;
+        oss << std::scientific << std::setprecision(get_digits<T>()) << value;
         return oss.str();
     }
+
+  private:
+    // see https://github.com/eclipse-iceoryx/iceoryx/pull/2155
+    template <typename T>
+    constexpr static uint32_t get_digits()
+    {
+        if constexpr (std::is_same_v<T, float>)
+        {
+            return 9;
+        }
+        else if (std::is_same_v<T, double> || std::is_same_v<T, long double>)
+        {
+            return 19;
+        }
+        else
+        {
+            static_assert("T should be floating point");
+        }
+    }
 };