diff --git a/tests/test.cpp b/tests/test.cpp
index de86f02b8..b4a358c76 100644
--- a/tests/test.cpp
+++ b/tests/test.cpp
@@ -678,12 +678,23 @@ template<typename T, typename U, U qnan_base> bool is_quiet_nan_impl(T v) {
   std::memcpy(&b, &v, sizeof(T));
   return ((b & qnan_base) == qnan_base);
 }
+#if defined(__mips__) || defined(__hppa__)
+static bool is_quiet_nan(float v) {
+  return is_quiet_nan_impl<float, uint32_t, 0x7FC00000u>(v) ||
+         is_quiet_nan_impl<float, uint32_t, 0x7FBFFFFFu>(v);
+}
+static bool is_quiet_nan(double v) {
+  return is_quiet_nan_impl<double, uint64_t, 0x7FF8000000000000ul>(v) ||
+         is_quiet_nan_impl<double, uint64_t, 0x7FF7FFFFFFFFFFFFu>(v);
+}
+#else
 static bool is_quiet_nan(float v) {
   return is_quiet_nan_impl<float, uint32_t, 0x7FC00000u>(v);
 }
 static bool is_quiet_nan(double v) {
   return is_quiet_nan_impl<double, uint64_t, 0x7FF8000000000000ul>(v);
 }
+#endif
 
 void TestMonsterExtraFloats() {
   TEST_EQ(is_quiet_nan(1.0), false);