Remove unused debug info constants.

[oota-llvm.git] / unittests / ADT / APFloatTest.cpp

diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp
index 3b69de2a52f0781decac7cb508fb5e2098bf7fae..a86be5af375043fcdcb48a5de5ed5771e85777e8 100644 (file)
--- a/unittests/ADT/APFloatTest.cpp
+++ b/unittests/ADT/APFloatTest.cpp
@@ -476,6 +476,28 @@ TEST(APFloatTest, FMA) {
   }
 }
 
+TEST(APFloatTest, MinNum) {
+  APFloat f1(1.0);
+  APFloat f2(2.0);
+  APFloat nan = APFloat::getNaN(APFloat::IEEEdouble);
+
+  EXPECT_EQ(1.0, minnum(f1, f2).convertToDouble());
+  EXPECT_EQ(1.0, minnum(f2, f1).convertToDouble());
+  EXPECT_EQ(1.0, minnum(f1, nan).convertToDouble());
+  EXPECT_EQ(1.0, minnum(nan, f1).convertToDouble());
+}
+
+TEST(APFloatTest, MaxNum) {
+  APFloat f1(1.0);
+  APFloat f2(2.0);
+  APFloat nan = APFloat::getNaN(APFloat::IEEEdouble);
+
+  EXPECT_EQ(2.0, maxnum(f1, f2).convertToDouble());
+  EXPECT_EQ(2.0, maxnum(f2, f1).convertToDouble());
+  EXPECT_EQ(1.0, maxnum(f1, nan).convertToDouble());
+  EXPECT_EQ(1.0, minnum(nan, f1).convertToDouble());
+}
+
 TEST(APFloatTest, Denormal) {
   APFloat::roundingMode rdmd = APFloat::rmNearestTiesToEven;
 
@@ -866,10 +888,11 @@ TEST(APFloatTest, toString) {
   ASSERT_EQ("0.0101", convertToString(1.01E-2, 5, 2));
   ASSERT_EQ("0.0101", convertToString(1.01E-2, 4, 2));
   ASSERT_EQ("1.01E-2", convertToString(1.01E-2, 5, 1));
-  ASSERT_EQ("0.7853981633974483", convertToString(0.78539816339744830961, 0, 3));
-  ASSERT_EQ("4.940656458412465E-324", convertToString(4.9406564584124654e-324, 0, 3));
-  ASSERT_EQ("873.1834", convertToString(873.1834, 0, 1));
-  ASSERT_EQ("8.731834E+2", convertToString(873.1834, 0, 0));
+  ASSERT_EQ("0.78539816339744828", convertToString(0.78539816339744830961, 0, 3));
+  ASSERT_EQ("4.9406564584124654E-324", convertToString(4.9406564584124654e-324, 0, 3));
+  ASSERT_EQ("873.18340000000001", convertToString(873.1834, 0, 1));
+  ASSERT_EQ("8.7318340000000001E+2", convertToString(873.1834, 0, 0));
+  ASSERT_EQ("1.7976931348623157E+308", convertToString(1.7976931348623157E+308, 0, 0));
 }
 
 TEST(APFloatTest, toInteger) {
@@ -1172,11 +1195,11 @@ TEST(APFloatTest, exactInverse) {
   EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(8.5070592e+37f)));
 
   // Large float, inverse is a denormal.
-  EXPECT_FALSE(APFloat(1.7014118e38f).getExactInverse(0));
+  EXPECT_FALSE(APFloat(1.7014118e38f).getExactInverse(nullptr));
   // Zero
-  EXPECT_FALSE(APFloat(0.0).getExactInverse(0));
+  EXPECT_FALSE(APFloat(0.0).getExactInverse(nullptr));
   // Denormalized float
-  EXPECT_FALSE(APFloat(1.40129846e-45f).getExactInverse(0));
+  EXPECT_FALSE(APFloat(1.40129846e-45f).getExactInverse(nullptr));
 }
 
 TEST(APFloatTest, roundToIntegral) {
@@ -1341,6 +1364,17 @@ TEST(APFloatTest, getZero) {
   }
 }
 
+TEST(APFloatTest, copySign) {
+  EXPECT_TRUE(APFloat(-42.0).bitwiseIsEqual(
+      APFloat::copySign(APFloat(42.0), APFloat(-1.0))));
+  EXPECT_TRUE(APFloat(42.0).bitwiseIsEqual(
+      APFloat::copySign(APFloat(-42.0), APFloat(1.0))));
+  EXPECT_TRUE(APFloat(-42.0).bitwiseIsEqual(
+      APFloat::copySign(APFloat(-42.0), APFloat(-1.0))));
+  EXPECT_TRUE(APFloat(42.0).bitwiseIsEqual(
+      APFloat::copySign(APFloat(42.0), APFloat(1.0))));
+}
+
 TEST(APFloatTest, convert) {
   bool losesInfo;
   APFloat test(APFloat::IEEEdouble, "1.0");
@@ -1843,10 +1877,10 @@ TEST(APFloatTest, subtract) {
     { PInf, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PInf, PZero, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PInf, MZero, "inf", APFloat::opOK, APFloat::fcInfinity },
-    { PInf, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { PInf, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { PInf, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { PInf, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { PInf, PNormalValue, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PInf, MNormalValue, "inf", APFloat::opOK, APFloat::fcInfinity },
@@ -1860,10 +1894,10 @@ TEST(APFloatTest, subtract) {
     { MInf, MInf, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
     { MInf, PZero, "-inf", APFloat::opOK, APFloat::fcInfinity },
     { MInf, MZero, "-inf", APFloat::opOK, APFloat::fcInfinity },
-    { MInf, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { MInf, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { MInf, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { MInf, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { MInf, PNormalValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
     { MInf, MNormalValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
@@ -1877,10 +1911,10 @@ TEST(APFloatTest, subtract) {
     { PZero, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PZero, PZero, "0x0p+0", APFloat::opOK, APFloat::fcZero },
     { PZero, MZero, "0x0p+0", APFloat::opOK, APFloat::fcZero },
-    { PZero, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { PZero, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { PZero, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { PZero, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { PZero, PNormalValue, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
     { PZero, MNormalValue, "0x1p+0", APFloat::opOK, APFloat::fcNormal },
@@ -1894,10 +1928,10 @@ TEST(APFloatTest, subtract) {
     { MZero, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { MZero, PZero, "-0x0p+0", APFloat::opOK, APFloat::fcZero },
     { MZero, MZero, "0x0p+0", APFloat::opOK, APFloat::fcZero },
-    { MZero, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { MZero, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { MZero, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { MZero, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { MZero, PNormalValue, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
     { MZero, MNormalValue, "0x1p+0", APFloat::opOK, APFloat::fcNormal },
@@ -1945,10 +1979,10 @@ TEST(APFloatTest, subtract) {
     { PNormalValue, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PNormalValue, PZero, "0x1p+0", APFloat::opOK, APFloat::fcNormal },
     { PNormalValue, MZero, "0x1p+0", APFloat::opOK, APFloat::fcNormal },
-    { PNormalValue, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { PNormalValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { PNormalValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { PNormalValue, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { PNormalValue, PNormalValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
     { PNormalValue, MNormalValue, "0x1p+1", APFloat::opOK, APFloat::fcNormal },
@@ -1962,10 +1996,10 @@ TEST(APFloatTest, subtract) {
     { MNormalValue, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { MNormalValue, PZero, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
     { MNormalValue, MZero, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
-    { MNormalValue, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { MNormalValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { MNormalValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { MNormalValue, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { MNormalValue, PNormalValue, "-0x1p+1", APFloat::opOK, APFloat::fcNormal },
     { MNormalValue, MNormalValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
@@ -1979,10 +2013,10 @@ TEST(APFloatTest, subtract) {
     { PLargestValue, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PLargestValue, PZero, "0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
     { PLargestValue, MZero, "0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
-    { PLargestValue, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { PLargestValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { PLargestValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { PLargestValue, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { PLargestValue, PNormalValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
     { PLargestValue, MNormalValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
@@ -1996,10 +2030,10 @@ TEST(APFloatTest, subtract) {
     { MLargestValue, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { MLargestValue, PZero, "-0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
     { MLargestValue, MZero, "-0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
-    { MLargestValue, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { MLargestValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { MLargestValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { MLargestValue, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { MLargestValue, PNormalValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
     { MLargestValue, MNormalValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
@@ -2013,10 +2047,10 @@ TEST(APFloatTest, subtract) {
     { PSmallestValue, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PSmallestValue, PZero, "0x1p-149", APFloat::opOK, APFloat::fcNormal },
     { PSmallestValue, MZero, "0x1p-149", APFloat::opOK, APFloat::fcNormal },
-    { PSmallestValue, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { PSmallestValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { PSmallestValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { PSmallestValue, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { PSmallestValue, PNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
     { PSmallestValue, MNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
@@ -2030,10 +2064,10 @@ TEST(APFloatTest, subtract) {
     { MSmallestValue, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { MSmallestValue, PZero, "-0x1p-149", APFloat::opOK, APFloat::fcNormal },
     { MSmallestValue, MZero, "-0x1p-149", APFloat::opOK, APFloat::fcNormal },
-    { MSmallestValue, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { MSmallestValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { MSmallestValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { MSmallestValue, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { MSmallestValue, PNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
     { MSmallestValue, MNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
@@ -2047,10 +2081,10 @@ TEST(APFloatTest, subtract) {
     { PSmallestNormalized, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { PSmallestNormalized, PZero, "0x1p-126", APFloat::opOK, APFloat::fcNormal },
     { PSmallestNormalized, MZero, "0x1p-126", APFloat::opOK, APFloat::fcNormal },
-    { PSmallestNormalized, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { PSmallestNormalized, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { PSmallestNormalized, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { PSmallestNormalized, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { PSmallestNormalized, PNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
     { PSmallestNormalized, MNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
@@ -2064,10 +2098,10 @@ TEST(APFloatTest, subtract) {
     { MSmallestNormalized, MInf, "inf", APFloat::opOK, APFloat::fcInfinity },
     { MSmallestNormalized, PZero, "-0x1p-126", APFloat::opOK, APFloat::fcNormal },
     { MSmallestNormalized, MZero, "-0x1p-126", APFloat::opOK, APFloat::fcNormal },
-    { MSmallestNormalized, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+    { MSmallestNormalized, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
 #if 0
 // See Note 1.
-    { MSmallestNormalized, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+    { MSmallestNormalized, SNaN, "-nan", APFloat::opInvalidOp, APFloat::fcNaN },
 #endif
     { MSmallestNormalized, PNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
     { MSmallestNormalized, MNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
@@ -2670,4 +2704,123 @@ TEST(APFloatTest, divide) {
   }
 }
 
+TEST(APFloatTest, operatorOverloads) {
+  // This is mostly testing that these operator overloads compile.
+  APFloat One = APFloat(APFloat::IEEEsingle, "0x1p+0");
+  APFloat Two = APFloat(APFloat::IEEEsingle, "0x2p+0");
+  EXPECT_TRUE(Two.bitwiseIsEqual(One + One));
+  EXPECT_TRUE(One.bitwiseIsEqual(Two - One));
+  EXPECT_TRUE(Two.bitwiseIsEqual(One * Two));
+  EXPECT_TRUE(One.bitwiseIsEqual(Two / Two));
+}
+
+TEST(APFloatTest, abs) {
+  APFloat PInf = APFloat::getInf(APFloat::IEEEsingle, false);
+  APFloat MInf = APFloat::getInf(APFloat::IEEEsingle, true);
+  APFloat PZero = APFloat::getZero(APFloat::IEEEsingle, false);
+  APFloat MZero = APFloat::getZero(APFloat::IEEEsingle, true);
+  APFloat PQNaN = APFloat::getNaN(APFloat::IEEEsingle, false);
+  APFloat MQNaN = APFloat::getNaN(APFloat::IEEEsingle, true);
+  APFloat PSNaN = APFloat::getSNaN(APFloat::IEEEsingle, false);
+  APFloat MSNaN = APFloat::getSNaN(APFloat::IEEEsingle, true);
+  APFloat PNormalValue = APFloat(APFloat::IEEEsingle, "0x1p+0");
+  APFloat MNormalValue = APFloat(APFloat::IEEEsingle, "-0x1p+0");
+  APFloat PLargestValue = APFloat::getLargest(APFloat::IEEEsingle, false);
+  APFloat MLargestValue = APFloat::getLargest(APFloat::IEEEsingle, true);
+  APFloat PSmallestValue = APFloat::getSmallest(APFloat::IEEEsingle, false);
+  APFloat MSmallestValue = APFloat::getSmallest(APFloat::IEEEsingle, true);
+  APFloat PSmallestNormalized =
+    APFloat::getSmallestNormalized(APFloat::IEEEsingle, false);
+  APFloat MSmallestNormalized =
+    APFloat::getSmallestNormalized(APFloat::IEEEsingle, true);
+
+  EXPECT_TRUE(PInf.bitwiseIsEqual(abs(PInf)));
+  EXPECT_TRUE(PInf.bitwiseIsEqual(abs(MInf)));
+  EXPECT_TRUE(PZero.bitwiseIsEqual(abs(PZero)));
+  EXPECT_TRUE(PZero.bitwiseIsEqual(abs(MZero)));
+  EXPECT_TRUE(PQNaN.bitwiseIsEqual(abs(PQNaN)));
+  EXPECT_TRUE(PQNaN.bitwiseIsEqual(abs(MQNaN)));
+  EXPECT_TRUE(PSNaN.bitwiseIsEqual(abs(PSNaN)));
+  EXPECT_TRUE(PSNaN.bitwiseIsEqual(abs(MSNaN)));
+  EXPECT_TRUE(PNormalValue.bitwiseIsEqual(abs(PNormalValue)));
+  EXPECT_TRUE(PNormalValue.bitwiseIsEqual(abs(MNormalValue)));
+  EXPECT_TRUE(PLargestValue.bitwiseIsEqual(abs(PLargestValue)));
+  EXPECT_TRUE(PLargestValue.bitwiseIsEqual(abs(MLargestValue)));
+  EXPECT_TRUE(PSmallestValue.bitwiseIsEqual(abs(PSmallestValue)));
+  EXPECT_TRUE(PSmallestValue.bitwiseIsEqual(abs(MSmallestValue)));
+  EXPECT_TRUE(PSmallestNormalized.bitwiseIsEqual(abs(PSmallestNormalized)));
+  EXPECT_TRUE(PSmallestNormalized.bitwiseIsEqual(abs(MSmallestNormalized)));
+}
+
+TEST(APFloatTest, ilogb) {
+  EXPECT_EQ(0, ilogb(APFloat(APFloat::IEEEsingle, "0x1p+0")));
+  EXPECT_EQ(0, ilogb(APFloat(APFloat::IEEEsingle, "-0x1p+0")));
+  EXPECT_EQ(42, ilogb(APFloat(APFloat::IEEEsingle, "0x1p+42")));
+  EXPECT_EQ(-42, ilogb(APFloat(APFloat::IEEEsingle, "0x1p-42")));
+
+  EXPECT_EQ(APFloat::IEK_Inf,
+            ilogb(APFloat::getInf(APFloat::IEEEsingle, false)));
+  EXPECT_EQ(APFloat::IEK_Inf,
+            ilogb(APFloat::getInf(APFloat::IEEEsingle, true)));
+  EXPECT_EQ(APFloat::IEK_Zero,
+            ilogb(APFloat::getZero(APFloat::IEEEsingle, false)));
+  EXPECT_EQ(APFloat::IEK_Zero,
+            ilogb(APFloat::getZero(APFloat::IEEEsingle, true)));
+  EXPECT_EQ(APFloat::IEK_NaN,
+            ilogb(APFloat::getNaN(APFloat::IEEEsingle, false)));
+  EXPECT_EQ(APFloat::IEK_NaN,
+            ilogb(APFloat::getSNaN(APFloat::IEEEsingle, false)));
+
+  EXPECT_EQ(127, ilogb(APFloat::getLargest(APFloat::IEEEsingle, false)));
+  EXPECT_EQ(127, ilogb(APFloat::getLargest(APFloat::IEEEsingle, true)));
+  EXPECT_EQ(-126, ilogb(APFloat::getSmallest(APFloat::IEEEsingle, false)));
+  EXPECT_EQ(-126, ilogb(APFloat::getSmallest(APFloat::IEEEsingle, true)));
+  EXPECT_EQ(-126,
+            ilogb(APFloat::getSmallestNormalized(APFloat::IEEEsingle, false)));
+  EXPECT_EQ(-126,
+            ilogb(APFloat::getSmallestNormalized(APFloat::IEEEsingle, true)));
+}
+
+TEST(APFloatTest, scalbn) {
+  EXPECT_TRUE(
+      APFloat(APFloat::IEEEsingle, "0x1p+0")
+          .bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), 0)));
+  EXPECT_TRUE(
+      APFloat(APFloat::IEEEsingle, "0x1p+42")
+          .bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), 42)));
+  EXPECT_TRUE(
+      APFloat(APFloat::IEEEsingle, "0x1p-42")
+          .bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), -42)));
+
+  APFloat PInf = APFloat::getInf(APFloat::IEEEsingle, false);
+  APFloat MInf = APFloat::getInf(APFloat::IEEEsingle, true);
+  APFloat PZero = APFloat::getZero(APFloat::IEEEsingle, false);
+  APFloat MZero = APFloat::getZero(APFloat::IEEEsingle, true);
+  APFloat QPNaN = APFloat::getNaN(APFloat::IEEEsingle, false);
+  APFloat QMNaN = APFloat::getNaN(APFloat::IEEEsingle, true);
+  APFloat SNaN = APFloat::getSNaN(APFloat::IEEEsingle, false);
+
+  EXPECT_TRUE(PInf.bitwiseIsEqual(scalbn(PInf, 0)));
+  EXPECT_TRUE(MInf.bitwiseIsEqual(scalbn(MInf, 0)));
+  EXPECT_TRUE(PZero.bitwiseIsEqual(scalbn(PZero, 0)));
+  EXPECT_TRUE(MZero.bitwiseIsEqual(scalbn(MZero, 0)));
+  EXPECT_TRUE(QPNaN.bitwiseIsEqual(scalbn(QPNaN, 0)));
+  EXPECT_TRUE(QMNaN.bitwiseIsEqual(scalbn(QMNaN, 0)));
+  EXPECT_TRUE(SNaN.bitwiseIsEqual(scalbn(SNaN, 0)));
+
+  EXPECT_TRUE(
+      PInf.bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), 128)));
+  EXPECT_TRUE(MInf.bitwiseIsEqual(
+      scalbn(APFloat(APFloat::IEEEsingle, "-0x1p+0"), 128)));
+  EXPECT_TRUE(
+      PInf.bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+127"), 1)));
+  EXPECT_TRUE(PZero.bitwiseIsEqual(
+      scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), -127)));
+  EXPECT_TRUE(MZero.bitwiseIsEqual(
+      scalbn(APFloat(APFloat::IEEEsingle, "-0x1p+0"), -127)));
+  EXPECT_TRUE(PZero.bitwiseIsEqual(
+      scalbn(APFloat(APFloat::IEEEsingle, "0x1p-126"), -1)));
+  EXPECT_TRUE(PZero.bitwiseIsEqual(
+      scalbn(APFloat(APFloat::IEEEsingle, "0x1p-126"), -1)));
+}
 }