diff --git a/libc/test/src/__support/FPUtil/CMakeLists.txt b/libc/test/src/__support/FPUtil/CMakeLists.txt
@@ -24,6 +24,7 @@ add_libc_test(
     libc.src.__support.FPUtil.fp_bits
     libc.src.__support.FPUtil.fpbits_str
     libc.src.__support.integer_literals
+    libc.src.__support.sign
 )
 
 add_fp_unittest(

diff --git a/libc/test/src/__support/FPUtil/dyadic_float_test.cpp b/libc/test/src/__support/FPUtil/dyadic_float_test.cpp
@@ -15,7 +15,6 @@
 using Float128 = LIBC_NAMESPACE::fputil::DyadicFloat<128>;
 using Float192 = LIBC_NAMESPACE::fputil::DyadicFloat<192>;
 using Float256 = LIBC_NAMESPACE::fputil::DyadicFloat<256>;
-using Sign = LIBC_NAMESPACE::fputil::Sign;
 
 TEST(LlvmLibcDyadicFloatTest, BasicConversions) {
   Float128 x(Sign::POS, /*exponent*/ 0,

diff --git a/libc/test/src/__support/FPUtil/fpbits_test.cpp b/libc/test/src/__support/FPUtil/fpbits_test.cpp
@@ -9,11 +9,11 @@
 #include "src/__support/FPUtil/FPBits.h"
 #include "src/__support/FPUtil/fpbits_str.h"
 #include "src/__support/integer_literals.h"
+#include "src/__support/sign.h" // Sign
 #include "test/UnitTest/Test.h"
 
 using LIBC_NAMESPACE::fputil::FPBits;
 using LIBC_NAMESPACE::fputil::FPType;
-using LIBC_NAMESPACE::fputil::Sign;
 using LIBC_NAMESPACE::fputil::internal::FPRep;
 
 using LIBC_NAMESPACE::operator""_u16;

diff --git a/libc/test/src/math/FDimTest.h b/libc/test/src/math/FDimTest.h
@@ -18,7 +18,6 @@ class FDimTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FuncPtr = T (*)(T, T);
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/FmaTest.h b/libc/test/src/math/FmaTest.h
@@ -23,7 +23,6 @@ class FmaTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using Func = T (*)(T, T, T);
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T min_subnormal = FPBits::min_subnormal(Sign::POS).get_val();
   const T min_normal = FPBits::min_normal(Sign::POS).get_val();

diff --git a/libc/test/src/math/HypotTest.h b/libc/test/src/math/HypotTest.h
@@ -23,7 +23,7 @@ class HypotTestTemplate : public LIBC_NAMESPACE::testing::Test {
 private:
   using Func = T (*)(T, T);
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
+
   using StorageType = typename FPBits::StorageType;
   const T nan = FPBits::quiet_nan().get_val();
   const T inf = FPBits::inf().get_val();

diff --git a/libc/test/src/math/ILogbTest.h b/libc/test/src/math/ILogbTest.h
@@ -24,7 +24,7 @@ class LlvmLibcILogbTest : public LIBC_NAMESPACE::testing::Test {
   template <typename T>
   void test_special_numbers(typename ILogbFunc<T>::Func func) {
     using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
-    using Sign = LIBC_NAMESPACE::fputil::Sign;
+
     EXPECT_EQ(FP_ILOGB0, func(FPBits::zero(Sign::POS).get_val()));
     EXPECT_EQ(FP_ILOGB0, func(FPBits::zero(Sign::NEG).get_val()));
     EXPECT_EQ(FP_ILOGBNAN, func(FPBits::quiet_nan().get_val()));

diff --git a/libc/test/src/math/LdExpTest.h b/libc/test/src/math/LdExpTest.h
@@ -23,7 +23,6 @@ class LdExpTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using NormalFloat = LIBC_NAMESPACE::fputil::NormalFloat<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/NextAfterTest.h b/libc/test/src/math/NextAfterTest.h
@@ -21,7 +21,6 @@ template <typename T>
 class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/RIntTest.h b/libc/test/src/math/RIntTest.h
@@ -32,7 +32,6 @@ class RIntTestTemplate : public LIBC_NAMESPACE::testing::Test {
 private:
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/RemQuoTest.h b/libc/test/src/math/RemQuoTest.h
@@ -22,7 +22,6 @@ template <typename T>
 class RemQuoTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/RoundToIntegerTest.h b/libc/test/src/math/RoundToIntegerTest.h
@@ -31,7 +31,6 @@ class RoundToIntegerTestTemplate : public LIBC_NAMESPACE::testing::Test {
 private:
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<F>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const F zero = FPBits::zero().get_val();
   const F neg_zero = FPBits::zero(Sign::NEG).get_val();

diff --git a/libc/test/src/math/atanhf_test.cpp b/libc/test/src/math/atanhf_test.cpp
@@ -22,7 +22,7 @@ using LlvmLibcAtanhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
 namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
 
 TEST_F(LlvmLibcAtanhfTest, SpecialNumbers) {
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
+
   LIBC_NAMESPACE::libc_errno = 0;
   LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
   EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::atanhf(aNaN));

diff --git a/libc/test/src/math/smoke/FDimTest.h b/libc/test/src/math/smoke/FDimTest.h
@@ -17,7 +17,6 @@ class FDimTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FuncPtr = T (*)(T, T);
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/FmaTest.h b/libc/test/src/math/smoke/FmaTest.h
@@ -19,7 +19,6 @@ class FmaTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using Func = T (*)(T, T, T);
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/HypotTest.h b/libc/test/src/math/smoke/HypotTest.h
@@ -21,7 +21,7 @@ class HypotTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using Func = T (*)(T, T);
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
+
   const T nan = FPBits::quiet_nan().get_val();
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/ILogbTest.h b/libc/test/src/math/smoke/ILogbTest.h
@@ -18,7 +18,6 @@ template <typename OutType, typename InType>
 class LlvmLibcILogbTest : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<InType>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
 public:
   typedef OutType (*Func)(InType);

diff --git a/libc/test/src/math/smoke/LdExpTest.h b/libc/test/src/math/smoke/LdExpTest.h
@@ -22,7 +22,6 @@ class LdExpTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using NormalFloat = LIBC_NAMESPACE::fputil::NormalFloat<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/NextAfterTest.h b/libc/test/src/math/smoke/NextAfterTest.h
@@ -32,7 +32,6 @@ template <typename T>
 class NextAfterTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/NextTowardTest.h b/libc/test/src/math/smoke/NextTowardTest.h
@@ -34,7 +34,6 @@ class NextTowardTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using ToFPBits = LIBC_NAMESPACE::fputil::FPBits<long double>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/RIntTest.h b/libc/test/src/math/smoke/RIntTest.h
@@ -29,7 +29,6 @@ class RIntTestTemplate : public LIBC_NAMESPACE::testing::Test {
 private:
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/RemQuoTest.h b/libc/test/src/math/smoke/RemQuoTest.h
@@ -19,7 +19,6 @@ template <typename T>
 class RemQuoTestTemplate : public LIBC_NAMESPACE::testing::Test {
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<T>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const T inf = FPBits::inf(Sign::POS).get_val();
   const T neg_inf = FPBits::inf(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/RoundToIntegerTest.h b/libc/test/src/math/smoke/RoundToIntegerTest.h
@@ -28,7 +28,6 @@ class RoundToIntegerTestTemplate : public LIBC_NAMESPACE::testing::Test {
 private:
   using FPBits = LIBC_NAMESPACE::fputil::FPBits<F>;
   using StorageType = typename FPBits::StorageType;
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
 
   const F zero = FPBits::zero(Sign::POS).get_val();
   const F neg_zero = FPBits::zero(Sign::NEG).get_val();

diff --git a/libc/test/src/math/smoke/atanhf_test.cpp b/libc/test/src/math/smoke/atanhf_test.cpp
@@ -19,7 +19,7 @@
 using LlvmLibcAtanhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
 
 TEST_F(LlvmLibcAtanhfTest, SpecialNumbers) {
-  using Sign = LIBC_NAMESPACE::fputil::Sign;
+
   LIBC_NAMESPACE::libc_errno = 0;
 
   LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);

diff --git a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
@@ -501,6 +501,14 @@ libc_support_library(
     ],
 )
 
+libc_support_library(
+    name = "__support_sign",
+    hdrs = ["src/__support/sign.h"],
+    deps = [
+        ":__support_macros_properties_types",
+    ],
+)
+
 libc_support_library(
     name = "__support_uint128",
     hdrs = ["src/__support/UInt128.h"],
@@ -734,6 +742,7 @@ libc_support_library(
     deps = [
         ":__support_common",
         ":__support_cpp_bit",
+        ":__support_sign",
         ":__support_cpp_type_traits",
         ":__support_libc_assert",
         ":__support_macros_attributes",

diff --git a/utils/bazel/llvm-project-overlay/libc/test/src/__support/FPUtil/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/test/src/__support/FPUtil/BUILD.bazel
@@ -17,6 +17,7 @@ libc_test(
         "//libc:__support_fputil_fp_bits",
         "//libc:__support_fputil_fpbits_str",
         "//libc:__support_integer_literals",
+        "//libc:__support_sign",
     ],
 )