/// <summary>
/// 内置函数
/// </summary>
/// <param name="f"></param>
/// <returns></returns>
public static double callBuildIn(FnCall f)
{
Bifs funcType = f.FuncType;
double v = eval(f.L);
switch (funcType)
{
case Bifs.B_SQRT:
return(Math.Sqrt(v));
case Bifs.B_EXP:
return(Math.Exp(v));
case Bifs.B_LOG:
return(Math.Log(v));
case Bifs.B_PRINT:
System.Console.WriteLine("= {}", v);
return(v);
default:
//yyerror("Unknown built-in function {}", funcType);
return(0.0);
}
}
public FnCall(int type, AbstractAst l)
{
NodeType = 'F';
FuncType = (Bifs)type;
L = l;
}
