codeql/java/ql/test/query-tests/UselessComparisonTest/C.java

public class C {
  double m1(double x) {
    return (x < 0 || x > 1 || Double.isNaN(x)) ? Double.NaN :
        x == 0 ? 0 : x == 1 ? 1 : 0.5;
  }
}