1 files changed, 50 insertions, 0 deletions

diff --git a/libcxx/test/language.support/support.limits/limits/numeric.limits.members/epsilon.pass.cpp b/libcxx/test/language.support/support.limits/limits/numeric.limits.members/epsilon.pass.cpp
new file mode 100644
index 00000000000..0869f88fff2
--- /dev/null
+++ b/libcxx/test/language.support/support.limits/limits/numeric.limits.members/epsilon.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// epsilon()
+
+#include <limits>
+#include <cfloat>
+#include <cassert>
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::epsilon() == expected);
+    assert(std::numeric_limits<const T>::epsilon() == expected);
+    assert(std::numeric_limits<volatile T>::epsilon() == expected);
+    assert(std::numeric_limits<const volatile T>::epsilon() == expected);
+}
+
+int main()
+{
+    test<bool>(false);
+    test<char>(0);
+    test<signed char>(0);
+    test<unsigned char>(0);
+    test<wchar_t>(0);
+#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
+    test<char16_t>(0);
+    test<char32_t>(0);
+#endif
+    test<short>(0);
+    test<unsigned short>(0);
+    test<int>(0);
+    test<unsigned int>(0);
+    test<long>(0);
+    test<unsigned long>(0);
+    test<long long>(0);
+    test<unsigned long long>(0);
+    test<float>(FLT_EPSILON);
+    test<double>(DBL_EPSILON);
+    test<long double>(LDBL_EPSILON);
+}