[llvm] r184714 - [APFloat] Added a large unittest for APFloat.add that checks that special values are computed correctly.
Michael Gottesman
mgottesman at apple.com
Mon Jun 24 02:58:07 PDT 2013
Author: mgottesman
Date: Mon Jun 24 04:58:07 2013
New Revision: 184714
URL: http://llvm.org/viewvc/llvm-project?rev=184714&view=rev
Log:
[APFloat] Added a large unittest for APFloat.add that checks that special values are computed correctly.
Modified:
llvm/trunk/unittests/ADT/APFloatTest.cpp
Modified: llvm/trunk/unittests/ADT/APFloatTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/ADT/APFloatTest.cpp?rev=184714&r1=184713&r2=184714&view=diff
==============================================================================
--- llvm/trunk/unittests/ADT/APFloatTest.cpp (original)
+++ llvm/trunk/unittests/ADT/APFloatTest.cpp Mon Jun 24 04:58:07 2013
@@ -1486,4 +1486,306 @@ TEST(APFloatTest, isFiniteNonZero) {
EXPECT_FALSE(APFloat::getSNaN(APFloat::IEEEsingle, true).isFiniteNonZero());
}
+TEST(APFloatTest, add) {
+ // Test Special Cases against each other and normal values.
+
+ // TODOS/NOTES:
+ // 1. Since we perform only default exception handling all operations with
+ // signaling NaNs should have a result that is a quiet NaN. Currently they
+ // return sNaN.
+ // 2. It seems that add(-x, NaN) = -NaN but add(NaN, -x) = NaN. This is an
+ // inconsistency that should be looked into. IEEE-754R specifies that the
+ // interpretation of the sign of NaN is unspecified. We should always have NaN
+ // be positive since that is one less thing for the compiler to deal with.
+
+ 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 QNaN = APFloat::getNaN(APFloat::IEEEsingle, false);
+ APFloat SNaN = APFloat::getSNaN(APFloat::IEEEsingle, false);
+ 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);
+
+ const int OverflowStatus = APFloat::opOverflow | APFloat::opInexact;
+
+ const unsigned NumTests = 169;
+ struct {
+ APFloat x;
+ APFloat y;
+ const char *result;
+ int status;
+ int category;
+ } SpecialCaseTests[NumTests] = {
+ { PInf, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, MInf, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { PInf, PZero, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, MZero, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { PInf, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { PInf, PNormalValue, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, MNormalValue, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, PLargestValue, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, MLargestValue, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, PSmallestValue, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, MSmallestValue, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, PSmallestNormalized, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { PInf, MSmallestNormalized, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, PInf, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { MInf, MInf, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, PZero, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, MZero, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ // See Note 2.
+ { MInf, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { MInf, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { MInf, PNormalValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, MNormalValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, PLargestValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, MLargestValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, PSmallestValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, MSmallestValue, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, PSmallestNormalized, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MInf, MSmallestNormalized, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { PZero, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { 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 },
+#if 0
+ // See Note 1.
+ { PZero, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { PZero, PNormalValue, "0x1p+0", APFloat::opOK, APFloat::fcNormal },
+ { PZero, MNormalValue, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
+ { PZero, PLargestValue, "0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
+ { PZero, MLargestValue, "-0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
+ { PZero, PSmallestValue, "0x1p-149", APFloat::opOK, APFloat::fcNormal },
+ { PZero, MSmallestValue, "-0x1p-149", APFloat::opOK, APFloat::fcNormal },
+ { PZero, PSmallestNormalized, "0x1p-126", APFloat::opOK, APFloat::fcNormal },
+ { PZero, MSmallestNormalized, "-0x1p-126", APFloat::opOK, APFloat::fcNormal },
+ { MZero, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { MZero, MInf, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MZero, PZero, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { MZero, MZero, "-0x0p+0", APFloat::opOK, APFloat::fcZero },
+ // See Note 2.
+ { MZero, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { MZero, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { MZero, PNormalValue, "0x1p+0", APFloat::opOK, APFloat::fcNormal },
+ { MZero, MNormalValue, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
+ { MZero, PLargestValue, "0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
+ { MZero, MLargestValue, "-0x1.fffffep+127", APFloat::opOK, APFloat::fcNormal },
+ { MZero, PSmallestValue, "0x1p-149", APFloat::opOK, APFloat::fcNormal },
+ { MZero, MSmallestValue, "-0x1p-149", APFloat::opOK, APFloat::fcNormal },
+ { MZero, PSmallestNormalized, "0x1p-126", APFloat::opOK, APFloat::fcNormal },
+ { MZero, MSmallestNormalized, "-0x1p-126", APFloat::opOK, APFloat::fcNormal },
+ { QNaN, PInf, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, MInf, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, PZero, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, MZero, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, QNaN, "nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { QNaN, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { QNaN, PNormalValue, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, MNormalValue, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, PLargestValue, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, MLargestValue, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, PSmallestValue, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, MSmallestValue, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, PSmallestNormalized, "nan", APFloat::opOK, APFloat::fcNaN },
+ { QNaN, MSmallestNormalized, "nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { SNaN, PInf, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, MInf, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, PZero, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, MZero, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, QNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, PNormalValue, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, MNormalValue, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, PLargestValue, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, MLargestValue, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, PSmallestValue, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, MSmallestValue, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, PSmallestNormalized, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+ { SNaN, MSmallestNormalized, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { PNormalValue, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { 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 },
+#if 0
+ // See Note 1.
+ { PNormalValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { PNormalValue, PNormalValue, "0x1p+1", APFloat::opOK, APFloat::fcNormal },
+ { PNormalValue, MNormalValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { PNormalValue, PLargestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PNormalValue, MLargestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PNormalValue, PSmallestValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PNormalValue, MSmallestValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PNormalValue, PSmallestNormalized, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PNormalValue, MSmallestNormalized, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MNormalValue, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { MNormalValue, MInf, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MNormalValue, PZero, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
+ { MNormalValue, MZero, "-0x1p+0", APFloat::opOK, APFloat::fcNormal },
+ // See Note 2.
+ { MNormalValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { MNormalValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { MNormalValue, PNormalValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { MNormalValue, MNormalValue, "-0x1p+1", APFloat::opOK, APFloat::fcNormal },
+ { MNormalValue, PLargestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MNormalValue, MLargestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MNormalValue, PSmallestValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MNormalValue, MSmallestValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MNormalValue, PSmallestNormalized, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MNormalValue, MSmallestNormalized, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PLargestValue, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { 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 },
+#if 0
+ // See Note 1.
+ { 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 },
+ { PLargestValue, PLargestValue, "inf", OverflowStatus, APFloat::fcInfinity },
+ { PLargestValue, MLargestValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { PLargestValue, PSmallestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PLargestValue, MSmallestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PLargestValue, PSmallestNormalized, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PLargestValue, MSmallestNormalized, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MLargestValue, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { 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 },
+ // See Note 2.
+ { MLargestValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { 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 },
+ { MLargestValue, PLargestValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { MLargestValue, MLargestValue, "-inf", OverflowStatus, APFloat::fcInfinity },
+ { MLargestValue, PSmallestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MLargestValue, MSmallestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MLargestValue, PSmallestNormalized, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MLargestValue, MSmallestNormalized, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestValue, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { 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 },
+#if 0
+ // See Note 1.
+ { PSmallestValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { PSmallestValue, PNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestValue, MNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestValue, PLargestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestValue, MLargestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestValue, PSmallestValue, "0x1p-148", APFloat::opOK, APFloat::fcNormal },
+ { PSmallestValue, MSmallestValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { PSmallestValue, PSmallestNormalized, "0x1.000002p-126", APFloat::opOK, APFloat::fcNormal },
+ { PSmallestValue, MSmallestNormalized, "-0x1.fffffcp-127", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestValue, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { MSmallestValue, MInf, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MSmallestValue, PZero, "-0x1p-149", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestValue, MZero, "-0x1p-149", APFloat::opOK, APFloat::fcNormal },
+ // See Note 2.
+ { MSmallestValue, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { MSmallestValue, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { MSmallestValue, PNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestValue, MNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestValue, PLargestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestValue, MLargestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestValue, PSmallestValue, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { MSmallestValue, MSmallestValue, "-0x1p-148", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestValue, PSmallestNormalized, "0x1.fffffcp-127", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestValue, MSmallestNormalized, "-0x1.000002p-126", APFloat::opOK, APFloat::fcNormal },
+ { PSmallestNormalized, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { 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 },
+#if 0
+// See Note 1.
+ { PSmallestNormalized, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { PSmallestNormalized, PNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestNormalized, MNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestNormalized, PLargestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestNormalized, MLargestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { PSmallestNormalized, PSmallestValue, "0x1.000002p-126", APFloat::opOK, APFloat::fcNormal },
+ { PSmallestNormalized, MSmallestValue, "0x1.fffffcp-127", APFloat::opOK, APFloat::fcNormal },
+ { PSmallestNormalized, PSmallestNormalized, "0x1p-125", APFloat::opOK, APFloat::fcNormal },
+ { PSmallestNormalized, MSmallestNormalized, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { MSmallestNormalized, PInf, "inf", APFloat::opOK, APFloat::fcInfinity },
+ { MSmallestNormalized, MInf, "-inf", APFloat::opOK, APFloat::fcInfinity },
+ { MSmallestNormalized, PZero, "-0x1p-126", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestNormalized, MZero, "-0x1p-126", APFloat::opOK, APFloat::fcNormal },
+ // See Note 2.
+ { MSmallestNormalized, QNaN, "-nan", APFloat::opOK, APFloat::fcNaN },
+#if 0
+ // See Note 1.
+ { MSmallestNormalized, SNaN, "nan", APFloat::opInvalidOp, APFloat::fcNaN },
+#endif
+ { MSmallestNormalized, PNormalValue, "0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestNormalized, MNormalValue, "-0x1p+0", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestNormalized, PLargestValue, "0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestNormalized, MLargestValue, "-0x1.fffffep+127", APFloat::opInexact, APFloat::fcNormal },
+ { MSmallestNormalized, PSmallestValue, "-0x1.fffffcp-127", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestNormalized, MSmallestValue, "-0x1.000002p-126", APFloat::opOK, APFloat::fcNormal },
+ { MSmallestNormalized, PSmallestNormalized, "0x0p+0", APFloat::opOK, APFloat::fcZero },
+ { MSmallestNormalized, MSmallestNormalized, "-0x1p-125", APFloat::opOK, APFloat::fcNormal }
+ };
+
+ for (size_t i = 0; i < NumTests; ++i) {
+ APFloat x(SpecialCaseTests[i].x);
+ APFloat y(SpecialCaseTests[i].y);
+ APFloat::opStatus status = x.add(y, APFloat::rmNearestTiesToEven);
+
+ APFloat result(APFloat::IEEEsingle, SpecialCaseTests[i].result);
+
+ printf("%a, %a, %a, %a\n", SpecialCaseTests[i].x.convertToFloat(),
+ SpecialCaseTests[i].y.convertToFloat(),
+ x.convertToFloat(), result.convertToFloat());
+
+ EXPECT_TRUE(result.bitwiseIsEqual(x));
+ EXPECT_TRUE((int)status == SpecialCaseTests[i].status);
+ EXPECT_TRUE((int)x.getCategory() == SpecialCaseTests[i].category);
+ }
+}
+
}
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