C++ wrapper for thrust

#include "thrust/device_ptr.h"
#include "thrust/extrema.h"
#include "thrust/system_error.h"
#include <iostream>

exern "C" int min_float_wrapper( float *data, int N)
{
    try {
        thrust::device_ptr <float> dev_ptr(data);
        return thrust::min_element(dev_ptr, dev_ptr + N) - dev_ptr;
    }
    catch(thrust::system_error &e) {
        std::cerr << "min_float_wrapper error " << e.what() << std::endl;
        return -1;
    }
}