标签：spl names ret += .so out space code lang
$ cat mytestlib.c
#include <stdio.h>
#include <stdlib.h>
int subPrint(int a, int b)
{
printf("%d - %d = %d \n", a, b,a-b);
return a-b;
}
gcc -g -o libpycall_c.so -shared -fPIC mytestlib.c
>>> import ctypes
>>> lib = ctypes.CDLL("./libpycall_c.so")
>>> lib.subPrint(12, 34)
12 - 34 = -22
-22
$ cat mytestlib.cpp
#include <iostream>
using namespace std;
int subPrint_(int a, int b){
int c;
c=a-b;
cout <<a << "-" << b <<"="<< c << endl;
return c;
}
extern "C" {
int subPrint(int a, int b){
return subPrint_(a, b);
}
}
>>> import ctypes
>>> import ctypes
>>> lib = ctypes.CDLL("./libpycall.so")
>>> lib.subPrint(15, 3)
15-3=12
12$ cat mytestlib.cpp
#include <iostream>
//dmyhaspl.github.io
using namespace std;
class AccumulationLib{
private:
int first=0;
int end=0 ;
public:
void setNumber(int first,int end){
this->first=first;
this->end=end;
}
long accumulate(){
long sum=0;
for(int num=first;num<=end;num++){
cout<<num<<" ";
sum+=num;
}
return sum;
}
int getFirstNumber(){
return first;
}
int getEndNumber(){
return end;
}
};
extern "C" {
AccumulationLib obj;
void setNumber(int first,int end){
obj.setNumber(first,end);
}
int getFirstNumber(){
return obj.getFirstNumber();
}
int getEndNumber(){
return obj.getEndNumber();
}
long accumulate(){
return obj.accumulate();
}
}>>> import ctypes
>>> lib = ctypes.CDLL("./libpycall.so")
>>> lib.setNumber(12,32)
43364592
>>> lib.accumulate()
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 462
>>> print lib.accumulate()
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 462
>>> lib.setNumber(12,22)
43364592
>>> print lib.accumulate()
12 13 14 15 16 17 18 19 20 21 22 187标签：spl names ret += .so out space code lang
原文地址：http://blog.51cto.com/13959448/2315928
