hash_code hash_value(const APFloat &Arg);
APFloat scalbn(APFloat X, int Exp);
+/// Implements IEEE minNum semantics. Returns the smaller of the 2 arguments if
+/// both are not NaN. If either argument is a NaN, returns the other argument.
+LLVM_READONLY
+inline APFloat minnum(const APFloat &A, const APFloat &B) {
+ if (A.isNaN())
+ return B;
+ if (B.isNaN())
+ return A;
+ return (B.compare(A) == APFloat::cmpLessThan) ? B : A;
+}
+
+/// Implements IEEE maxNum semantics. Returns the larger of the 2 arguments if
+/// both are not NaN. If either argument is a NaN, returns the other argument.
+LLVM_READONLY
+inline APFloat maxnum(const APFloat &A, const APFloat &B) {
+ if (A.isNaN())
+ return B;
+ if (B.isNaN())
+ return A;
+ return (A.compare(B) == APFloat::cmpLessThan) ? B : A;
+}
+
} // namespace llvm
#endif // LLVM_ADT_APFLOAT_H
}
}
+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;