public static void test5() {
MathFunc f = FX.x * FX.y * FX.z + 1;
System.out.println(f);
System.out.println(f.getVarNames());
System.out.println(f.apply(2, 3, 4));
CompiledFunc cf = f.compile();
System.out.println(cf.apply(2, 3, 4));
}
public static void test2() {
MathFunc x = FX.x;
MathFunc y = FX.y;
MathFunc xy = x.M(y);
System.out.println(xy);
HashMap<String, MathFunc> map = new HashMap<String, MathFunc>();
map.put(x.getVarNames().get(0), FX.r.A(FX.s));
map.put(y.getVarNames().get(0), FX.r.S(FX.s));
MathFunc xy2 = xy.compose(map);
System.out.println(xy2);
System.out.println(FX.r.A(FX.s).M(FX.r.S(FX.s)));
FuncClassLoader<CompiledFunc> fcl = new FuncClassLoader<CompiledFunc>();
ClassGen genClass = BytecodeUtils.genClass(xy2, null, "add2", true, false);
CompiledFunc fxy2 = fcl.newInstance(genClass);
System.out.println(fxy2.apply(4.0, 2.0));
}
public static void test4() {
FSin sin = new FSin("x");
FCos cos = new FCos("y");
MathFunc f = sin * cos;
System.out.println(f);
System.out.println(f.getVarNames());
System.out.println(f.apply(Math.PI / 2, Math.PI / 4));
CompiledFunc cf = f.compile();
System.out.println(cf.apply(Math.PI / 2, Math.PI / 4));
// bug in order of args
System.out.println(f.compile(new String[] {"y", "x"}).apply(Math.PI / 2, Math.PI / 4));
}
/**
* 构造下列形函数中的一个： N1 = L1 = r N2 = L2 = s N3 = L3 = t
*
* @param funID = 1,2,3
*/
public void Create(int funID, double coef) {
funIndex = funID - 1;
if (funID < 1 || 3 < funID) {
throw new FutureyeException("ERROR: funID should be 1,2 or 3.");
}
this.varNames = new String[] {"r", "s", "t"};
innerVarNames = new ObjList<String>("x", "y");
// Compose function: r = r(x,y), s = s(x,y), t = t(x,y)
Map<String, MathFunc> fInners = new HashMap<String, MathFunc>();
final String varName = varNames[funIndex];
fInners.put(
varName,
new AbstractMathFunc(innerVarNames.toList()) {
public MathFunc diff(String var) {
if (area < 0.0) {
throw new FutureyeException("Check nodes order: area < 0.0");
} else {
if (varName.equals("r")) { // r对应三角形高h的负倒数
if (var.equals("x")) return new FC(b[0] / (2 * area));
if (var.equals("y")) return new FC(c[0] / (2 * area));
} else if (varName.equals("s")) { // s对应三角形高h的负倒数
if (var.equals("x")) return new FC(b[1] / (2 * area));
if (var.equals("y")) return new FC(c[1] / (2 * area));
} else if (varName.equals("t")) { // t对应三角形高h的负倒数
if (var.equals("x")) return new FC(b[2] / (2 * area));
if (var.equals("y")) return new FC(c[2] / (2 * area));
}
}
return null;
}
@Override
public double apply(double... args) {
throw new UnsupportedOperationException();
}
});
// 使用复合函数构造形函数
funOuter = new SF123();
this.coef = coef;
funCompose = FC.c(this.coef).M(funOuter.compose(fInners));
funCompose.setActiveVarNames(funOuter.getVarNames());
}