1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
//
// Copyright (C) 2003 Rational Discovery LLC
//
#include <boost/python.hpp>
#include <RDBoost/boost_numpy.h>
#define PY_ARRAY_UNIQUE_SYMBOL RD_array_API
#include <numpy/arrayobject.h>
namespace python = boost::python;
double GetFirstElement(NumpyArrayType &x) {
PyArrayObject *ptr = (PyArrayObject *)x.ptr();
void *data = PyArray_DATA(ptr);
double res = 0.0;
switch (ptr->descr->type_num) {
case PyArray_DOUBLE:
res = ((double *)data)[0];
break;
case PyArray_FLOAT:
res = (double)((float *)data)[0];
break;
case PyArray_LONG:
res = (double)((long *)data)[0];
break;
case PyArray_INT:
res = (double)((int *)data)[0];
break;
}
return res;
}
BOOST_PYTHON_MODULE(linalg) { python::def("GetFirstElement", GetFirstElement); }
|
