diff --git a/libc/test/src/stdlib/strtod_test.cpp b/libc/test/src/stdlib/strtod_test.cpp
--- a/libc/test/src/stdlib/strtod_test.cpp
+++ b/libc/test/src/stdlib/strtod_test.cpp
@@ -10,12 +10,17 @@
 #include "src/stdlib/strtod.h"
 
 #include "utils/UnitTest/Test.h"
+#include "utils/testutils/RoundingModeUtils.h"
 
 #include <errno.h>
 #include <limits.h>
 #include <stddef.h>
 
-class LlvmLibcStrToDTest : public __llvm_libc::testing::Test {
+using __llvm_libc::testutils::ForceRoundingModeTest;
+using __llvm_libc::testutils::RoundingMode;
+
+class LlvmLibcStrToDTest : public __llvm_libc::testing::Test,
+                           ForceRoundingModeTest<RoundingMode::Nearest> {
 public:
   void run_test(const char *inputString, const ptrdiff_t expectedStrLen,
                 const uint64_t expectedRawData, const int expectedErrno = 0) {
diff --git a/libc/test/src/stdlib/strtof_test.cpp b/libc/test/src/stdlib/strtof_test.cpp
--- a/libc/test/src/stdlib/strtof_test.cpp
+++ b/libc/test/src/stdlib/strtof_test.cpp
@@ -10,12 +10,17 @@
 #include "src/stdlib/strtof.h"
 
 #include "utils/UnitTest/Test.h"
+#include "utils/testutils/RoundingModeUtils.h"
 
 #include <errno.h>
 #include <limits.h>
 #include <stddef.h>
 
-class LlvmLibcStrToFTest : public __llvm_libc::testing::Test {
+using __llvm_libc::testutils::ForceRoundingModeTest;
+using __llvm_libc::testutils::RoundingMode;
+
+class LlvmLibcStrToFTest : public __llvm_libc::testing::Test,
+                           ForceRoundingModeTest<RoundingMode::Nearest> {
 public:
   void run_test(const char *inputString, const ptrdiff_t expectedStrLen,
                 const uint32_t expectedRawData, const int expectedErrno = 0) {
diff --git a/libc/utils/MPFRWrapper/CMakeLists.txt b/libc/utils/MPFRWrapper/CMakeLists.txt
--- a/libc/utils/MPFRWrapper/CMakeLists.txt
+++ b/libc/utils/MPFRWrapper/CMakeLists.txt
@@ -12,12 +12,13 @@
     libc.src.__support.CPP.type_traits 
     libc.src.__support.FPUtil.fputil 
     LibcUnitTest
+    libc_test_utils
   )
   if(EXISTS ${LLVM_LIBC_MPFR_INSTALL_PATH})
     target_include_directories(libcMPFRWrapper PUBLIC ${LLVM_LIBC_MPFR_INSTALL_PATH}/include)
     target_link_directories(libcMPFRWrapper PUBLIC ${LLVM_LIBC_MPFR_INSTALL_PATH}/lib)
   endif()
-  target_link_libraries(libcMPFRWrapper LibcFPTestHelpers LibcUnitTest mpfr gmp)
+  target_link_libraries(libcMPFRWrapper LibcFPTestHelpers LibcUnitTest mpfr gmp libc_test_utils)
 else()
   message(WARNING "Math tests using MPFR will be skipped.")
 endif()
diff --git a/libc/utils/MPFRWrapper/MPFRUtils.h b/libc/utils/MPFRWrapper/MPFRUtils.h
--- a/libc/utils/MPFRWrapper/MPFRUtils.h
+++ b/libc/utils/MPFRWrapper/MPFRUtils.h
@@ -11,6 +11,7 @@
 
 #include "src/__support/CPP/TypeTraits.h"
 #include "utils/UnitTest/Test.h"
+#include "utils/testutils/RoundingModeUtils.h"
 
 #include <stdint.h>
 
@@ -75,17 +76,8 @@
   EndTernaryOperationsSingleOutput,
 };
 
-enum class RoundingMode : uint8_t { Upward, Downward, TowardZero, Nearest };
-
-int get_fe_rounding(RoundingMode mode);
-
-struct ForceRoundingMode {
-  ForceRoundingMode(RoundingMode);
-  ~ForceRoundingMode();
-
-  int old_rounding_mode;
-  int rounding_mode;
-};
+using __llvm_libc::testutils::ForceRoundingMode;
+using __llvm_libc::testutils::RoundingMode;
 
 template <typename T> struct BinaryInput {
   static_assert(
diff --git a/libc/utils/MPFRWrapper/MPFRUtils.cpp b/libc/utils/MPFRWrapper/MPFRUtils.cpp
--- a/libc/utils/MPFRWrapper/MPFRUtils.cpp
+++ b/libc/utils/MPFRWrapper/MPFRUtils.cpp
@@ -106,35 +106,6 @@
   }
 }
 
-int get_fe_rounding(RoundingMode mode) {
-  switch (mode) {
-  case RoundingMode::Upward:
-    return FE_UPWARD;
-    break;
-  case RoundingMode::Downward:
-    return FE_DOWNWARD;
-    break;
-  case RoundingMode::TowardZero:
-    return FE_TOWARDZERO;
-    break;
-  case RoundingMode::Nearest:
-    return FE_TONEAREST;
-    break;
-  }
-}
-
-ForceRoundingMode::ForceRoundingMode(RoundingMode mode) {
-  old_rounding_mode = fegetround();
-  rounding_mode = get_fe_rounding(mode);
-  if (old_rounding_mode != rounding_mode)
-    fesetround(rounding_mode);
-}
-
-ForceRoundingMode::~ForceRoundingMode() {
-  if (old_rounding_mode != rounding_mode)
-    fesetround(old_rounding_mode);
-}
-
 class MPFRNumber {
   unsigned int mpfr_precision;
   mpfr_rnd_t mpfr_rounding;
diff --git a/libc/utils/testutils/CMakeLists.txt b/libc/utils/testutils/CMakeLists.txt
--- a/libc/utils/testutils/CMakeLists.txt
+++ b/libc/utils/testutils/CMakeLists.txt
@@ -15,4 +15,5 @@
   FDReader.h
   Timer.h
   Timer.cpp
+  RoundingModeUtils.cpp
 )
diff --git a/libc/utils/testutils/RoundingModeUtils.h b/libc/utils/testutils/RoundingModeUtils.h
new file mode 100644
--- /dev/null
+++ b/libc/utils/testutils/RoundingModeUtils.h
@@ -0,0 +1,34 @@
+//===-- RoundingModeUtils.h -------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_UTILS_TESTUTILS_ROUNDINGMODEUTILS_H
+#define LLVM_LIBC_UTILS_TESTUTILS_ROUNDINGMODEUTILS_H
+
+#include <stdint.h>
+
+namespace __llvm_libc {
+namespace testutils {
+
+enum class RoundingMode : uint8_t { Upward, Downward, TowardZero, Nearest };
+
+struct ForceRoundingMode {
+  ForceRoundingMode(RoundingMode);
+  ~ForceRoundingMode();
+
+  int old_rounding_mode;
+  int rounding_mode;
+};
+
+template <RoundingMode R> struct ForceRoundingModeTest : ForceRoundingMode {
+  ForceRoundingModeTest() : ForceRoundingMode(R) {}
+};
+
+} // namespace testutils
+} // namespace __llvm_libc
+
+#endif // LLVM_LIBC_UTILS_TESTUTILS_ROUNDINGMODEUTILS_H
diff --git a/libc/utils/testutils/RoundingModeUtils.cpp b/libc/utils/testutils/RoundingModeUtils.cpp
new file mode 100644
--- /dev/null
+++ b/libc/utils/testutils/RoundingModeUtils.cpp
@@ -0,0 +1,46 @@
+//===-- RoundingModeUtils.cpp ---------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "RoundingModeUtils.h"
+
+#include <fenv.h>
+
+namespace __llvm_libc {
+namespace testutils {
+
+int get_fe_rounding(RoundingMode mode) {
+  switch (mode) {
+  case RoundingMode::Upward:
+    return FE_UPWARD;
+    break;
+  case RoundingMode::Downward:
+    return FE_DOWNWARD;
+    break;
+  case RoundingMode::TowardZero:
+    return FE_TOWARDZERO;
+    break;
+  case RoundingMode::Nearest:
+    return FE_TONEAREST;
+    break;
+  }
+}
+
+ForceRoundingMode::ForceRoundingMode(RoundingMode mode) {
+  old_rounding_mode = fegetround();
+  rounding_mode = get_fe_rounding(mode);
+  if (old_rounding_mode != rounding_mode)
+    fesetround(rounding_mode);
+}
+
+ForceRoundingMode::~ForceRoundingMode() {
+  if (old_rounding_mode != rounding_mode)
+    fesetround(old_rounding_mode);
+}
+
+} // namespace testutils
+} // namespace __llvm_libc