#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
+#include <cmath>
#include <ostream>
#include <string>
f1.fusedMultiplyAdd(f2, f3, APFloat::rmNearestTiesToEven);
EXPECT_EQ(12.0f, f1.convertToFloat());
}
+
+ // Test for correct zero sign when answer is exactly zero.
+ // fma(1.0, -1.0, 1.0) -> +ve 0.
+ {
+ APFloat f1(1.0);
+ APFloat f2(-1.0);
+ APFloat f3(1.0);
+ f1.fusedMultiplyAdd(f2, f3, APFloat::rmNearestTiesToEven);
+ EXPECT_TRUE(!f1.isNegative() && f1.isZero());
+ }
+
+ // Test for correct zero sign when answer is exactly zero and rounding towards
+ // negative.
+ // fma(1.0, -1.0, 1.0) -> +ve 0.
+ {
+ APFloat f1(1.0);
+ APFloat f2(-1.0);
+ APFloat f3(1.0);
+ f1.fusedMultiplyAdd(f2, f3, APFloat::rmTowardNegative);
+ EXPECT_TRUE(f1.isNegative() && f1.isZero());
+ }
+
+ // Test for correct (in this case -ve) sign when adding like signed zeros.
+ // Test fma(0.0, -0.0, -0.0) -> -ve 0.
+ {
+ APFloat f1(0.0);
+ APFloat f2(-0.0);
+ APFloat f3(-0.0);
+ f1.fusedMultiplyAdd(f2, f3, APFloat::rmNearestTiesToEven);
+ EXPECT_TRUE(f1.isNegative() && f1.isZero());
+ }
+
+ // Test -ve sign preservation when small negative results underflow.
+ {
+ APFloat f1(APFloat::IEEEdouble, "-0x1p-1074");
+ APFloat f2(APFloat::IEEEdouble, "+0x1p-1074");
+ APFloat f3(0.0);
+ f1.fusedMultiplyAdd(f2, f3, APFloat::rmNearestTiesToEven);
+ EXPECT_TRUE(f1.isNegative() && f1.isZero());
+ }
+
+ // Test x87 extended precision case from http://llvm.org/PR20728.
+ {
+ APFloat M1(APFloat::x87DoubleExtended, 1.0);
+ APFloat M2(APFloat::x87DoubleExtended, 1.0);
+ APFloat A(APFloat::x87DoubleExtended, 3.0);
+
+ bool losesInfo = false;
+ M1.fusedMultiplyAdd(M1, A, APFloat::rmNearestTiesToEven);
+ M1.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven, &losesInfo);
+ EXPECT_FALSE(losesInfo);
+ EXPECT_EQ(4.0f, M1.convertToFloat());
+ }
+}
+
+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) {
EXPECT_EQ(-0.0, P.convertToDouble());
P = APFloat::getNaN(APFloat::IEEEdouble);
P.roundToIntegral(APFloat::rmTowardZero);
- EXPECT_TRUE(IsNAN(P.convertToDouble()));
+ EXPECT_TRUE(std::isnan(P.convertToDouble()));
P = APFloat::getInf(APFloat::IEEEdouble);
P.roundToIntegral(APFloat::rmTowardZero);
- EXPECT_TRUE(IsInf(P.convertToDouble()) && P.convertToDouble() > 0.0);
+ EXPECT_TRUE(std::isinf(P.convertToDouble()) && P.convertToDouble() > 0.0);
P = APFloat::getInf(APFloat::IEEEdouble, true);
P.roundToIntegral(APFloat::rmTowardZero);
- EXPECT_TRUE(IsInf(P.convertToDouble()) && P.convertToDouble() < 0.0);
+ EXPECT_TRUE(std::isinf(P.convertToDouble()) && P.convertToDouble() < 0.0);
}
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)));
+}
}
projects / oota-llvm.git / blobdiff