错误签名错误

Question

我有以下用Cython模块：

compmech  
    integrate 
     integratev.pxd 
     integratev.pyx 
    conecyl 
     main.pyx 

在integratev.pxd我已经声明：

ctypedef void (*f_type)(int npts, double *xs, double *ts, double *out, 
        double *alphas, double *betas, void *args) nogil 

cdef int trapz2d(f_type f, int fdim, np.ndarray[cDOUBLE, ndim=1] final_out, 
       double xmin, double xmax, int m, 
       double ymin, double ymax, int n, 
       void *args, int num_cores) 

我打电话trapz2d从main.pyx，并通过功能到trapz2d已在main.pyx中声明，例如：

from compmech.integrate.integratev cimport trapz2d 

cdef void cfk0L(int npts, double *xs, double *ts, double *out, 
       double *alphas, double *betas, void *args) nogil: 
    ... 

trapz2d(<f_type>cfk0L, fdim, k0Lv, xa, xb, nx, ta, tb, nt, &args, num_cores) 

它编译就好了，但是当我跑我的错误：

TypeError: C function compmech.integrate.integratev.trapz2d has wrong signature  
(expected int (__pyx_t_8compmech_9integrate_10integratev_f_type, int, PyArrayObject *, 
       double, double, int, double, double, int, void *, int), 
got int (__pyx_t_10integratev_f_type, int, PyArrayObject *, 
      double, double, int, double, double, int, void *, int)) 

这似乎是我的错误，但也许我缺少一些重要的东西在这里...

---

注：当我把所有内容都放入main.pyx而不是使用多个模块时，它可以工作。

Answer 1

解决的办法是在trapz2d()之前，通过所有内容，如void *，并将其转换为<f_type>，然后才能实际执行该功能。代码的最终布局是：

ctypedef void (*f_type)(int npts, double *xs, double *ts, double *out, 
        double *alphas, double *betas, void *args) nogil 

cdef int trapz2d(void *fin, int fdim, np.ndarray[cDOUBLE, ndim=1] final_out, 
       double xmin, double xmax, int m, 
       double ymin, double ymax, int n, 
       void *args, int num_cores) 
    cdef f_type f 
    f = <f_type>fin 
    ... 

，并在其他的代码：

from compmech.integrate.integratev cimport trapz2d 

cdef void cfk0L(int npts, double *xs, double *ts, double *out, 
       double *alphas, double *betas, void *args) nogil: 
    ... 

trapz2d(<void *>cfk0L, fdim, k0Lv, xa, xb, nx, ta, tb, nt, &args, num_cores)