From 636f1e1f9299c72175228a461b547b819d63963f Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Fri, 25 Aug 2023 19:55:36 +0200
Subject: [PATCH] test: conditional compilation set for `constexpr` `round()`
 usage

---
 test/unit_test/static/iau_test.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/unit_test/static/iau_test.cpp b/test/unit_test/static/iau_test.cpp
index 93cc5de8a..33ddec680 100644
--- a/test/unit_test/static/iau_test.cpp
+++ b/test/unit_test/static/iau_test.cpp
@@ -41,9 +41,11 @@ static_assert(isq::length(1 * LD) == 384'399 * si::kilo<si::metre>);
 static_assert(isq::length(1 * ly) == 9'460'730'472'580'800 * si::metre);
 static_assert(isq::length(10'000'000'000 * A) == 1 * si::metre);
 
+#if __cpp_lib_constexpr_cmath || MP_UNITS_COMP_GCC
 // TODO Should the below work for `1 * pc`? If yes, how to extent the type and how to convert it to a floating-point
 // representation for comparison purposes?
 static_assert(round<si::metre>(isq::length(1.L * pc)) == 30'856'775'814'913'673 * si::metre);
+#endif
 
 static_assert(isq::speed(1 * c_0) == 299'792'458 * (si::metre / si::second));