Function PyArray_PythonPyIntFromInt

numpy/core/src/common/npy_argparse.c:28–51

* Small wrapper converting to array just like CPython does. * * We could use our own PyArray_PyIntAsInt function, but it handles floats * differently. * A disadvantage of this function compared to ``PyArg_*("i")`` code is that * it will not say which parameter is wrong. * * @param obj The python object to convert * @param value The output value * * @returns 0 on failure and 1 on success

 * @returns 0 on failure and 1 on success (`NPY_FAIL`, `NPY_SUCCEED`)
 */
NPY_NO_EXPORT int
PyArray_PythonPyIntFromInt(PyObject *obj, int *value)
{
    /* Pythons behaviour is to check only for float explicitly... */
    if (NPY_UNLIKELY(PyFloat_Check(obj))) {
        PyErr_SetString(PyExc_TypeError,
                        "integer argument expected, got float");
        return NPY_FAIL;
    }

    long result = PyLong_AsLong(obj);
    if (NPY_UNLIKELY((result == -1) && PyErr_Occurred())) {
        return NPY_FAIL;
    }
    if (NPY_UNLIKELY((result > INT_MAX) || (result < INT_MIN))) {
        PyErr_SetString(PyExc_OverflowError,
                        "Python int too large to convert to C int");
        return NPY_FAIL;
    }
    else {
        *value = (int)result;
        return NPY_SUCCEED;
    }
}


typedef int convert(PyObject *, void *);