public override Function Subtract(Function f) { Constant c = f as Constant; if (c != null) { return((Constant)(this.val - c.val)); } return(-f.Subtract(this)); }
public override Function Subtract(Function f) { Constant c = f as Constant; if(c != null) { return (Constant)(this.val - c.val); } return -f.Subtract(this); }