小编tam*_*amb的帖子

我正在使用ffcall(特别是ffcall的avcall包)库来动态地将参数推送到可变参数函数.即我们有

int blah (char *a, int b, double c, ...);

我们希望用来自用户的值来调用此函数.为此,我们创建了该函数的avcall版本:

int av_blah (char *a, int b, double c, char **values, int num_of_values)
{
    av_alist alist;
    int i, ret;
    av_start_int (alist, &blah, &ret); //let it know which function
    av_ptr (alist, char*, a); // push values onto stack starting from left
    av_int (alist, b);
    av_double (alist, c);
    for (i=0;i<num_of_values;i++)
    {
        // do what you want with values and add to stack
    }
    av_call (alist);  //call blah()

    return (ret);
}

现在,我使用avcall的功能是:

int …