python Programming Glossary: cdef

http://stackoverflow.com/questions/3046305/simple-wrapping-of-c-code-with-cython

below calls fc import numpy as np cimport numpy as np cdef extern from fc.h int fc int N double a double b double z # z..

call Cython function from C++

http://stackoverflow.com/questions/5710441/call-cython-function-from-c

The trick with cython is in using the keyword public cdef public double cython_function double value double value2 return..

How to convert pointer to c array to python array

http://stackoverflow.com/questions/7543675/how-to-convert-pointer-to-c-array-to-python-array

# initialize C API to call PyArray_SimpleNewFromData cdef public api tonumpyarray double data long long size with gil.. long size with gil if not data and size 0 raise ValueError cdef np.npy_intp dims size #NOTE it doesn't take ownership of `data`...

Fast n-gram calculation

http://stackoverflow.com/questions/7591258/fast-n-gram-calculation

compile it. Example using a defaultdict instead of yield cdef ngrams tokens int MIN_N int MAX_N cdef Py_ssize_t i j n_tokens.. instead of yield cdef ngrams tokens int MIN_N int MAX_N cdef Py_ssize_t i j n_tokens count defaultdict int join_spaces .join..

Wrapping C library [closed]

http://stackoverflow.com/questions/7619785/wrapping-c-library

0 What I have tried to do is file.pyx from ctypes import cdef extern from Person.h ctypedef struct Person_ptr pass Person_ptr.. pass Person_ptr Person_create P_create char name cdef class Person cdef Person P_create p_name return Person_create.. Person_create P_create char name cdef class Person cdef Person P_create p_name return Person_create p_name It's not..

Numpy vs Cython speed

http://stackoverflow.com/questions/7799977/numpy-vs-cython-speed

False @cython.wraparound False @cython.nonecheck False cdef _process np.ndarray DTYPE_t ndim 2 array cdef unsigned int rows.. False cdef _process np.ndarray DTYPE_t ndim 2 array cdef unsigned int rows array.shape 0 cdef unsigned int cols array.shape.. DTYPE_t ndim 2 array cdef unsigned int rows array.shape 0 cdef unsigned int cols array.shape 1 cdef unsigned int row cdef np.ndarray..