matlab7.04用mcc转换tan.m函数文件,出现错误:<BR>Error: Cannot compile "tan" because it is a built-in MATLAB function. <BR>If you would like to export an interface to the built-in functions via a <BR>shared library, create a wrapper m-function that calls this function and <BR>compile that into your library. <BR>??? Error executing mcc, return status = 1.<BR>其中built-in具体是什么意思?<BR>怎么修改创建一个wrapper函数? <BR>还有谁知道都有哪些函数不能变成c啊,听说涉及到matlab内部类的都不行,能具体说明么?<BR>