[libc][NFC] Rename global `nan` in tests to `aNaN`.

The name `nan` conflicts with the function `nan` defined declared in
math.h.

GitOrigin-RevId: f66cf13d5d0bc4099d452088c03fd6705aae2bc7
diff --git a/test/src/math/ceil_test.cpp b/test/src/math/ceil_test.cpp
index 0e17b0a..1537227 100644
--- a/test/src/math/ceil_test.cpp
+++ b/test/src/math/ceil_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::ceil(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::ceil(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::ceil(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::ceil(aNaN)), 0);
 }
 
 TEST(CeilTest, RoundedNumbers) {
diff --git a/test/src/math/ceilf_test.cpp b/test/src/math/ceilf_test.cpp
index 3d7db68..aa3ea73 100644
--- a/test/src/math/ceilf_test.cpp
+++ b/test/src/math/ceilf_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::ceilf(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::ceilf(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::ceilf(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::ceilf(aNaN)), 0);
 }
 
 TEST(CeilfTest, RoundedNumbers) {
diff --git a/test/src/math/ceill_test.cpp b/test/src/math/ceill_test.cpp
index 950a976..b33d317 100644
--- a/test/src/math/ceill_test.cpp
+++ b/test/src/math/ceill_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::ceill(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::ceill(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::ceill(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::ceill(aNaN)), 0);
 }
 
 TEST(CeillTest, RoundedNumbers) {
diff --git a/test/src/math/copysign_test.cpp b/test/src/math/copysign_test.cpp
index 09067fa..7ab7ccf 100644
--- a/test/src/math/copysign_test.cpp
+++ b/test/src/math/copysign_test.cpp
@@ -17,8 +17,8 @@
 DECLARE_SPECIAL_CONSTANTS(double)
 
 TEST(CopySignTest, SpecialNumbers) {
-  EXPECT_FP_EQ(nan, __llvm_libc::copysign(nan, -1.0));
-  EXPECT_FP_EQ(nan, __llvm_libc::copysign(nan, 1.0));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::copysign(aNaN, -1.0));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::copysign(aNaN, 1.0));
 
   EXPECT_FP_EQ(negInf, __llvm_libc::copysign(inf, -1.0));
   EXPECT_FP_EQ(inf, __llvm_libc::copysign(negInf, 1.0));
diff --git a/test/src/math/copysignf_test.cpp b/test/src/math/copysignf_test.cpp
index e430550..72082ca 100644
--- a/test/src/math/copysignf_test.cpp
+++ b/test/src/math/copysignf_test.cpp
@@ -17,8 +17,8 @@
 DECLARE_SPECIAL_CONSTANTS(float)
 
 TEST(CopySinfTest, SpecialNumbers) {
-  EXPECT_FP_EQ(nan, __llvm_libc::copysignf(nan, -1.0));
-  EXPECT_FP_EQ(nan, __llvm_libc::copysignf(nan, 1.0));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::copysignf(aNaN, -1.0));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::copysignf(aNaN, 1.0));
 
   EXPECT_FP_EQ(negInf, __llvm_libc::copysignf(inf, -1.0));
   EXPECT_FP_EQ(inf, __llvm_libc::copysignf(negInf, 1.0));
diff --git a/test/src/math/copysignl_test.cpp b/test/src/math/copysignl_test.cpp
index 47f439f..69daa03 100644
--- a/test/src/math/copysignl_test.cpp
+++ b/test/src/math/copysignl_test.cpp
@@ -17,8 +17,8 @@
 DECLARE_SPECIAL_CONSTANTS(long double)
 
 TEST(CopySinlTest, SpecialNumbers) {
-  EXPECT_FP_EQ(nan, __llvm_libc::copysignl(nan, -1.0));
-  EXPECT_FP_EQ(nan, __llvm_libc::copysignl(nan, 1.0));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::copysignl(aNaN, -1.0));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::copysignl(aNaN, 1.0));
 
   EXPECT_FP_EQ(negInf, __llvm_libc::copysignl(inf, -1.0));
   EXPECT_FP_EQ(inf, __llvm_libc::copysignl(negInf, 1.0));
diff --git a/test/src/math/fabs_test.cpp b/test/src/math/fabs_test.cpp
index 0e1dc48..91d37e3 100644
--- a/test/src/math/fabs_test.cpp
+++ b/test/src/math/fabs_test.cpp
@@ -20,7 +20,7 @@
 namespace mpfr = __llvm_libc::testing::mpfr;
 
 TEST(FabsTest, SpecialNumbers) {
-  EXPECT_FP_EQ(nan, __llvm_libc::fabs(nan));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::fabs(aNaN));
 
   EXPECT_FP_EQ(inf, __llvm_libc::fabs(inf));
   EXPECT_FP_EQ(inf, __llvm_libc::fabs(negInf));
diff --git a/test/src/math/fabsf_test.cpp b/test/src/math/fabsf_test.cpp
index 256748c..fc09259 100644
--- a/test/src/math/fabsf_test.cpp
+++ b/test/src/math/fabsf_test.cpp
@@ -20,7 +20,7 @@
 namespace mpfr = __llvm_libc::testing::mpfr;
 
 TEST(FabsfTest, SpecialNumbers) {
-  EXPECT_FP_EQ(nan, __llvm_libc::fabsf(nan));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::fabsf(aNaN));
 
   EXPECT_FP_EQ(inf, __llvm_libc::fabsf(inf));
   EXPECT_FP_EQ(inf, __llvm_libc::fabsf(negInf));
diff --git a/test/src/math/fabsl_test.cpp b/test/src/math/fabsl_test.cpp
index fd3a882..1a0cb9d 100644
--- a/test/src/math/fabsl_test.cpp
+++ b/test/src/math/fabsl_test.cpp
@@ -20,7 +20,7 @@
 namespace mpfr = __llvm_libc::testing::mpfr;
 
 TEST(FabslTest, SpecialNumbers) {
-  EXPECT_FP_EQ(nan, __llvm_libc::fabsl(nan));
+  EXPECT_FP_EQ(aNaN, __llvm_libc::fabsl(aNaN));
 
   EXPECT_FP_EQ(inf, __llvm_libc::fabsl(inf));
   EXPECT_FP_EQ(inf, __llvm_libc::fabsl(negInf));
diff --git a/test/src/math/floor_test.cpp b/test/src/math/floor_test.cpp
index 588b2a3..35f107a 100644
--- a/test/src/math/floor_test.cpp
+++ b/test/src/math/floor_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::floor(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::floor(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::floor(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::floor(aNaN)), 0);
 }
 
 TEST(FloorTest, RoundedNumbers) {
diff --git a/test/src/math/floorf_test.cpp b/test/src/math/floorf_test.cpp
index 5a8e8cf..e6bc974 100644
--- a/test/src/math/floorf_test.cpp
+++ b/test/src/math/floorf_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::floorf(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::floorf(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::floorf(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::floorf(aNaN)), 0);
 }
 
 TEST(FloorfTest, RoundedNumbers) {
diff --git a/test/src/math/floorl_test.cpp b/test/src/math/floorl_test.cpp
index 3ab5d5f..cad5c70 100644
--- a/test/src/math/floorl_test.cpp
+++ b/test/src/math/floorl_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::floorl(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::floorl(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::floorl(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::floorl(aNaN)), 0);
 }
 
 TEST(FloorlTest, RoundedNumbers) {
diff --git a/test/src/math/fmax_test.cpp b/test/src/math/fmax_test.cpp
index 1114307..b84db30 100644
--- a/test/src/math/fmax_test.cpp
+++ b/test/src/math/fmax_test.cpp
@@ -17,13 +17,13 @@
 DECLARE_SPECIAL_CONSTANTS(double)
 
 TEST(FmaxTest, NaNArg) {
-  EXPECT_FP_EQ(inf, __llvm_libc::fmax(nan, inf));
-  EXPECT_FP_EQ(negInf, __llvm_libc::fmax(negInf, nan));
-  EXPECT_FP_EQ(0.0, __llvm_libc::fmax(nan, 0.0));
-  EXPECT_FP_EQ(-0.0, __llvm_libc::fmax(-0.0, nan));
-  EXPECT_FP_EQ(-1.2345, __llvm_libc::fmax(nan, -1.2345));
-  EXPECT_FP_EQ(1.2345, __llvm_libc::fmax(1.2345, nan));
-  EXPECT_NE(isnan(__llvm_libc::fmax(nan, nan)), 0);
+  EXPECT_FP_EQ(inf, __llvm_libc::fmax(aNaN, inf));
+  EXPECT_FP_EQ(negInf, __llvm_libc::fmax(negInf, aNaN));
+  EXPECT_FP_EQ(0.0, __llvm_libc::fmax(aNaN, 0.0));
+  EXPECT_FP_EQ(-0.0, __llvm_libc::fmax(-0.0, aNaN));
+  EXPECT_FP_EQ(-1.2345, __llvm_libc::fmax(aNaN, -1.2345));
+  EXPECT_FP_EQ(1.2345, __llvm_libc::fmax(1.2345, aNaN));
+  EXPECT_NE(isnan(__llvm_libc::fmax(aNaN, aNaN)), 0);
 }
 
 TEST(FmaxTest, InfArg) {
diff --git a/test/src/math/fmaxf_test.cpp b/test/src/math/fmaxf_test.cpp
index 3e81c99..7d6661c 100644
--- a/test/src/math/fmaxf_test.cpp
+++ b/test/src/math/fmaxf_test.cpp
@@ -17,13 +17,13 @@
 DECLARE_SPECIAL_CONSTANTS(float)
 
 TEST(FmaxfTest, NaNArg) {
-  EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(nan, inf));
-  EXPECT_FP_EQ(negInf, __llvm_libc::fmaxf(negInf, nan));
-  EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(nan, 0.0f));
-  EXPECT_FP_EQ(-0.0f, __llvm_libc::fmaxf(-0.0f, nan));
-  EXPECT_FP_EQ(-1.2345f, __llvm_libc::fmaxf(nan, -1.2345f));
-  EXPECT_FP_EQ(1.2345f, __llvm_libc::fmaxf(1.2345f, nan));
-  EXPECT_NE(isnan(__llvm_libc::fmaxf(nan, nan)), 0);
+  EXPECT_FP_EQ(inf, __llvm_libc::fmaxf(aNaN, inf));
+  EXPECT_FP_EQ(negInf, __llvm_libc::fmaxf(negInf, aNaN));
+  EXPECT_FP_EQ(0.0f, __llvm_libc::fmaxf(aNaN, 0.0f));
+  EXPECT_FP_EQ(-0.0f, __llvm_libc::fmaxf(-0.0f, aNaN));
+  EXPECT_FP_EQ(-1.2345f, __llvm_libc::fmaxf(aNaN, -1.2345f));
+  EXPECT_FP_EQ(1.2345f, __llvm_libc::fmaxf(1.2345f, aNaN));
+  EXPECT_NE(isnan(__llvm_libc::fmaxf(aNaN, aNaN)), 0);
 }
 
 TEST(FmaxfTest, InfArg) {
diff --git a/test/src/math/fmaxl_test.cpp b/test/src/math/fmaxl_test.cpp
index ce48b5d..72f7636 100644
--- a/test/src/math/fmaxl_test.cpp
+++ b/test/src/math/fmaxl_test.cpp
@@ -17,13 +17,13 @@
 DECLARE_SPECIAL_CONSTANTS(long double)
 
 TEST(FmaxlTest, NaNArg) {
-  EXPECT_FP_EQ(inf, __llvm_libc::fmaxl(nan, inf));
-  EXPECT_FP_EQ(negInf, __llvm_libc::fmaxl(negInf, nan));
-  EXPECT_FP_EQ(0.0L, __llvm_libc::fmaxl(nan, 0.0L));
-  EXPECT_FP_EQ(-0.0L, __llvm_libc::fmaxl(-0.0L, nan));
-  EXPECT_FP_EQ(-1.2345L, __llvm_libc::fmaxl(nan, -1.2345L));
-  EXPECT_FP_EQ(1.2345L, __llvm_libc::fmaxl(1.2345L, nan));
-  EXPECT_NE(isnan(__llvm_libc::fmaxl(nan, nan)), 0);
+  EXPECT_FP_EQ(inf, __llvm_libc::fmaxl(aNaN, inf));
+  EXPECT_FP_EQ(negInf, __llvm_libc::fmaxl(negInf, aNaN));
+  EXPECT_FP_EQ(0.0L, __llvm_libc::fmaxl(aNaN, 0.0L));
+  EXPECT_FP_EQ(-0.0L, __llvm_libc::fmaxl(-0.0L, aNaN));
+  EXPECT_FP_EQ(-1.2345L, __llvm_libc::fmaxl(aNaN, -1.2345L));
+  EXPECT_FP_EQ(1.2345L, __llvm_libc::fmaxl(1.2345L, aNaN));
+  EXPECT_NE(isnan(__llvm_libc::fmaxl(aNaN, aNaN)), 0);
 }
 
 TEST(FmaxlTest, InfArg) {
diff --git a/test/src/math/fmin_test.cpp b/test/src/math/fmin_test.cpp
index 89a25be..5deaa85 100644
--- a/test/src/math/fmin_test.cpp
+++ b/test/src/math/fmin_test.cpp
@@ -17,13 +17,13 @@
 DECLARE_SPECIAL_CONSTANTS(double)
 
 TEST(FminTest, NaNArg) {
-  EXPECT_FP_EQ(inf, __llvm_libc::fmin(nan, inf));
-  EXPECT_FP_EQ(negInf, __llvm_libc::fmin(negInf, nan));
-  EXPECT_FP_EQ(0.0, __llvm_libc::fmin(nan, 0.0));
-  EXPECT_FP_EQ(-0.0, __llvm_libc::fmin(-0.0, nan));
-  EXPECT_FP_EQ(-1.2345, __llvm_libc::fmin(nan, -1.2345));
-  EXPECT_FP_EQ(1.2345, __llvm_libc::fmin(1.2345, nan));
-  EXPECT_NE(isnan(__llvm_libc::fmin(nan, nan)), 0);
+  EXPECT_FP_EQ(inf, __llvm_libc::fmin(aNaN, inf));
+  EXPECT_FP_EQ(negInf, __llvm_libc::fmin(negInf, aNaN));
+  EXPECT_FP_EQ(0.0, __llvm_libc::fmin(aNaN, 0.0));
+  EXPECT_FP_EQ(-0.0, __llvm_libc::fmin(-0.0, aNaN));
+  EXPECT_FP_EQ(-1.2345, __llvm_libc::fmin(aNaN, -1.2345));
+  EXPECT_FP_EQ(1.2345, __llvm_libc::fmin(1.2345, aNaN));
+  EXPECT_NE(isnan(__llvm_libc::fmin(aNaN, aNaN)), 0);
 }
 
 TEST(FminTest, InfArg) {
diff --git a/test/src/math/fminf_test.cpp b/test/src/math/fminf_test.cpp
index 6772fb5..d9a01dd 100644
--- a/test/src/math/fminf_test.cpp
+++ b/test/src/math/fminf_test.cpp
@@ -17,13 +17,13 @@
 DECLARE_SPECIAL_CONSTANTS(float)
 
 TEST(FminfTest, NaNArg) {
-  EXPECT_FP_EQ(inf, __llvm_libc::fminf(nan, inf));
-  EXPECT_FP_EQ(negInf, __llvm_libc::fminf(negInf, nan));
-  EXPECT_FP_EQ(0.0f, __llvm_libc::fminf(nan, 0.0f));
-  EXPECT_FP_EQ(-0.0f, __llvm_libc::fminf(-0.0f, nan));
-  EXPECT_FP_EQ(-1.2345f, __llvm_libc::fminf(nan, -1.2345f));
-  EXPECT_FP_EQ(1.2345f, __llvm_libc::fminf(1.2345f, nan));
-  EXPECT_NE(isnan(__llvm_libc::fminf(nan, nan)), 0);
+  EXPECT_FP_EQ(inf, __llvm_libc::fminf(aNaN, inf));
+  EXPECT_FP_EQ(negInf, __llvm_libc::fminf(negInf, aNaN));
+  EXPECT_FP_EQ(0.0f, __llvm_libc::fminf(aNaN, 0.0f));
+  EXPECT_FP_EQ(-0.0f, __llvm_libc::fminf(-0.0f, aNaN));
+  EXPECT_FP_EQ(-1.2345f, __llvm_libc::fminf(aNaN, -1.2345f));
+  EXPECT_FP_EQ(1.2345f, __llvm_libc::fminf(1.2345f, aNaN));
+  EXPECT_NE(isnan(__llvm_libc::fminf(aNaN, aNaN)), 0);
 }
 
 TEST(FminfTest, InfArg) {
diff --git a/test/src/math/fminl_test.cpp b/test/src/math/fminl_test.cpp
index 20c88d4..75200b1 100644
--- a/test/src/math/fminl_test.cpp
+++ b/test/src/math/fminl_test.cpp
@@ -17,13 +17,13 @@
 DECLARE_SPECIAL_CONSTANTS(long double)
 
 TEST(FminlTest, NaNArg) {
-  EXPECT_FP_EQ(inf, __llvm_libc::fminl(nan, inf));
-  EXPECT_FP_EQ(negInf, __llvm_libc::fminl(negInf, nan));
-  EXPECT_FP_EQ(0.0L, __llvm_libc::fminl(nan, 0.0L));
-  EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(-0.0L, nan));
-  EXPECT_FP_EQ(-1.2345L, __llvm_libc::fminl(nan, -1.2345L));
-  EXPECT_FP_EQ(1.2345L, __llvm_libc::fminl(1.2345L, nan));
-  EXPECT_NE(isnan(__llvm_libc::fminl(nan, nan)), 0);
+  EXPECT_FP_EQ(inf, __llvm_libc::fminl(aNaN, inf));
+  EXPECT_FP_EQ(negInf, __llvm_libc::fminl(negInf, aNaN));
+  EXPECT_FP_EQ(0.0L, __llvm_libc::fminl(aNaN, 0.0L));
+  EXPECT_FP_EQ(-0.0L, __llvm_libc::fminl(-0.0L, aNaN));
+  EXPECT_FP_EQ(-1.2345L, __llvm_libc::fminl(aNaN, -1.2345L));
+  EXPECT_FP_EQ(1.2345L, __llvm_libc::fminl(1.2345L, aNaN));
+  EXPECT_NE(isnan(__llvm_libc::fminl(aNaN, aNaN)), 0);
 }
 
 TEST(FminlTest, InfArg) {
diff --git a/test/src/math/round_test.cpp b/test/src/math/round_test.cpp
index bc611d4..defa22a 100644
--- a/test/src/math/round_test.cpp
+++ b/test/src/math/round_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::round(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::round(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::round(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::round(aNaN)), 0);
 }
 
 TEST(RoundTest, RoundedNumbers) {
diff --git a/test/src/math/roundf_test.cpp b/test/src/math/roundf_test.cpp
index 4a49c09..2665e81 100644
--- a/test/src/math/roundf_test.cpp
+++ b/test/src/math/roundf_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::roundf(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::roundf(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::roundf(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::roundf(aNaN)), 0);
 }
 
 TEST(RoundfTest, RoundedNumbers) {
diff --git a/test/src/math/roundl_test.cpp b/test/src/math/roundl_test.cpp
index 7b2eb6f..ff33c07 100644
--- a/test/src/math/roundl_test.cpp
+++ b/test/src/math/roundl_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::roundl(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::roundl(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::roundl(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::roundl(aNaN)), 0);
 }
 
 TEST(RoundlTest, RoundedNumbers) {
diff --git a/test/src/math/sqrt_test.cpp b/test/src/math/sqrt_test.cpp
index beec7ad..f0a1fff 100644
--- a/test/src/math/sqrt_test.cpp
+++ b/test/src/math/sqrt_test.cpp
@@ -23,12 +23,12 @@
 DECLARE_SPECIAL_CONSTANTS(double)
 
 TEST(SqrtTest, SpecialValues) {
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrt(nan));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrt(aNaN));
   ASSERT_FP_EQ(inf, __llvm_libc::sqrt(inf));
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrt(negInf));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrt(negInf));
   ASSERT_FP_EQ(0.0, __llvm_libc::sqrt(0.0));
   ASSERT_FP_EQ(-0.0, __llvm_libc::sqrt(-0.0));
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrt(-1.0));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrt(-1.0));
   ASSERT_FP_EQ(1.0, __llvm_libc::sqrt(1.0));
   ASSERT_FP_EQ(2.0, __llvm_libc::sqrt(4.0));
   ASSERT_FP_EQ(3.0, __llvm_libc::sqrt(9.0));
diff --git a/test/src/math/sqrtf_test.cpp b/test/src/math/sqrtf_test.cpp
index b64b0d0..2f1b807 100644
--- a/test/src/math/sqrtf_test.cpp
+++ b/test/src/math/sqrtf_test.cpp
@@ -23,12 +23,12 @@
 DECLARE_SPECIAL_CONSTANTS(float)
 
 TEST(SqrtfTest, SpecialValues) {
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrtf(nan));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrtf(aNaN));
   ASSERT_FP_EQ(inf, __llvm_libc::sqrtf(inf));
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrtf(negInf));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrtf(negInf));
   ASSERT_FP_EQ(0.0f, __llvm_libc::sqrtf(0.0f));
   ASSERT_FP_EQ(-0.0f, __llvm_libc::sqrtf(-0.0f));
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrtf(-1.0f));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrtf(-1.0f));
   ASSERT_FP_EQ(1.0f, __llvm_libc::sqrtf(1.0f));
   ASSERT_FP_EQ(2.0f, __llvm_libc::sqrtf(4.0f));
   ASSERT_FP_EQ(3.0f, __llvm_libc::sqrtf(9.0f));
diff --git a/test/src/math/sqrtl_test.cpp b/test/src/math/sqrtl_test.cpp
index 4fe03df..6e7a092 100644
--- a/test/src/math/sqrtl_test.cpp
+++ b/test/src/math/sqrtl_test.cpp
@@ -23,12 +23,12 @@
 DECLARE_SPECIAL_CONSTANTS(long double)
 
 TEST(SqrtlTest, SpecialValues) {
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrtl(nan));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrtl(aNaN));
   ASSERT_FP_EQ(inf, __llvm_libc::sqrtl(inf));
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrtl(negInf));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrtl(negInf));
   ASSERT_FP_EQ(0.0L, __llvm_libc::sqrtl(0.0L));
   ASSERT_FP_EQ(-0.0L, __llvm_libc::sqrtl(-0.0L));
-  ASSERT_FP_EQ(nan, __llvm_libc::sqrtl(-1.0L));
+  ASSERT_FP_EQ(aNaN, __llvm_libc::sqrtl(-1.0L));
   ASSERT_FP_EQ(1.0L, __llvm_libc::sqrtl(1.0L));
   ASSERT_FP_EQ(2.0L, __llvm_libc::sqrtl(4.0L));
   ASSERT_FP_EQ(3.0L, __llvm_libc::sqrtl(9.0L));
diff --git a/test/src/math/trunc_test.cpp b/test/src/math/trunc_test.cpp
index 981a729..89fa17d 100644
--- a/test/src/math/trunc_test.cpp
+++ b/test/src/math/trunc_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::trunc(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::trunc(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::trunc(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::trunc(aNaN)), 0);
 }
 
 TEST(TruncTest, RoundedNumbers) {
diff --git a/test/src/math/truncf_test.cpp b/test/src/math/truncf_test.cpp
index 416eb7c..bd44ce7 100644
--- a/test/src/math/truncf_test.cpp
+++ b/test/src/math/truncf_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::truncf(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::truncf(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::truncf(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::truncf(aNaN)), 0);
 }
 
 TEST(TruncfTest, RoundedNumbers) {
diff --git a/test/src/math/truncl_test.cpp b/test/src/math/truncl_test.cpp
index 1220b7a..3c70a3a 100644
--- a/test/src/math/truncl_test.cpp
+++ b/test/src/math/truncl_test.cpp
@@ -26,8 +26,8 @@
   EXPECT_FP_EQ(inf, __llvm_libc::truncl(inf));
   EXPECT_FP_EQ(negInf, __llvm_libc::truncl(negInf));
 
-  ASSERT_NE(isnan(nan), 0);
-  ASSERT_NE(isnan(__llvm_libc::truncl(nan)), 0);
+  ASSERT_NE(isnan(aNaN), 0);
+  ASSERT_NE(isnan(__llvm_libc::truncl(aNaN)), 0);
 }
 
 TEST(TrunclTest, RoundedNumbers) {
diff --git a/utils/FPUtil/TestHelpers.h b/utils/FPUtil/TestHelpers.h
index 8addb0c..48abed8 100644
--- a/utils/FPUtil/TestHelpers.h
+++ b/utils/FPUtil/TestHelpers.h
@@ -68,7 +68,7 @@
 #define DECLARE_SPECIAL_CONSTANTS(T)                                           \
   static const T zero = __llvm_libc::fputil::FPBits<T>::zero();                \
   static const T negZero = __llvm_libc::fputil::FPBits<T>::negZero();          \
-  static const T nan = __llvm_libc::fputil::FPBits<T>::buildNaN(1);            \
+  static const T aNaN = __llvm_libc::fputil::FPBits<T>::buildNaN(1);           \
   static const T inf = __llvm_libc::fputil::FPBits<T>::inf();                  \
   static const T negInf = __llvm_libc::fputil::FPBits<T>::negInf();