forked from pandas-dev/pandas
-
Notifications
You must be signed in to change notification settings - Fork 3
/
numpy_helper.h
56 lines (43 loc) · 1.53 KB
/
numpy_helper.h
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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/*
Copyright (c) 2016, PyData Development Team
All rights reserved.
Distributed under the terms of the BSD Simplified License.
The full license is in the LICENSE file, distributed with this software.
*/
#ifndef PANDAS__LIBS_SRC_NUMPY_HELPER_H_
#define PANDAS__LIBS_SRC_NUMPY_HELPER_H_
#include "Python.h"
#include "helper.h"
#include "numpy/arrayobject.h"
#include "numpy/arrayscalars.h"
PANDAS_INLINE npy_int64 get_nat(void) { return NPY_MIN_INT64; }
PANDAS_INLINE int assign_value_1d(PyArrayObject* ap, Py_ssize_t _i,
PyObject* v) {
npy_intp i = (npy_intp)_i;
char* item = (char*)PyArray_DATA(ap) + i * PyArray_STRIDE(ap, 0);
return PyArray_DESCR(ap)->f->setitem(v, item, ap);
}
PANDAS_INLINE PyObject* get_value_1d(PyArrayObject* ap, Py_ssize_t i) {
char* item = (char*)PyArray_DATA(ap) + i * PyArray_STRIDE(ap, 0);
return PyArray_Scalar(item, PyArray_DESCR(ap), (PyObject*)ap);
}
// returns ASCII or UTF8 (py3) view on python str
// python object owns memory, should not be freed
PANDAS_INLINE const char* get_c_string(PyObject* obj) {
#if PY_VERSION_HEX >= 0x03000000
return PyUnicode_AsUTF8(obj);
#else
return PyString_AsString(obj);
#endif
}
PANDAS_INLINE PyObject* char_to_string(const char* data) {
#if PY_VERSION_HEX >= 0x03000000
return PyUnicode_FromString(data);
#else
return PyString_FromString(data);
#endif
}
void set_array_not_contiguous(PyArrayObject* ao) {
ao->flags &= ~(NPY_C_CONTIGUOUS | NPY_F_CONTIGUOUS);
}
#endif // PANDAS__LIBS_SRC_NUMPY_HELPER_H_