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-rw-r--r--absl/random/uniform_real_distribution_test.cc16
1 files changed, 11 insertions, 5 deletions
diff --git a/absl/random/uniform_real_distribution_test.cc b/absl/random/uniform_real_distribution_test.cc
index be107cdd..18bcd3bc 100644
--- a/absl/random/uniform_real_distribution_test.cc
+++ b/absl/random/uniform_real_distribution_test.cc
@@ -20,11 +20,13 @@
#include <random>
#include <sstream>
#include <string>
+#include <type_traits>
#include <vector>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/internal/raw_logging.h"
+#include "absl/numeric/internal/representation.h"
#include "absl/random/internal/chi_square.h"
#include "absl/random/internal/distribution_test_util.h"
#include "absl/random/internal/pcg_engine.h"
@@ -55,11 +57,15 @@ namespace {
template <typename RealType>
class UniformRealDistributionTest : public ::testing::Test {};
-#if defined(__EMSCRIPTEN__)
-using RealTypes = ::testing::Types<float, double>;
-#else
-using RealTypes = ::testing::Types<float, double, long double>;
-#endif // defined(__EMSCRIPTEN__)
+// double-double arithmetic is not supported well by either GCC or Clang; see
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99048,
+// https://bugs.llvm.org/show_bug.cgi?id=49131, and
+// https://bugs.llvm.org/show_bug.cgi?id=49132. Don't bother running these tests
+// with double doubles until compiler support is better.
+using RealTypes =
+ std::conditional<absl::numeric_internal::IsDoubleDouble(),
+ ::testing::Types<float, double>,
+ ::testing::Types<float, double, long double>>::type;
TYPED_TEST_SUITE(UniformRealDistributionTest, RealTypes);