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#include <Python.h>
int fib(int n) {
if (n < 0) {
return -1; // Raise
}
if (n < 2) {
return 1;
}
return fib(n - 1) + fib(n - 2);
}
static PyObject * fibc_fib(PyObject *self, PyObject *args) {
int n;
if (!PyArg_ParseTuple(args, "i", &n))
return NULL;
int r = fib(n);
return PyLong_FromLong(r);
}
static PyMethodDef FibcMethods[] = {
{"fib", fibc_fib, METH_VARARGS, "Calculate a fibonacci sequence value."},
{NULL, NULL, 0, NULL},
};
static PyModuleDef fibcmodule = {
PyModuleDef_HEAD_INIT,
"fibc",
NULL, // documentation
-1, // state in global vars
FibcMethods
};
PyMODINIT_FUNC PyInit_fibc(void) {
return PyModule_Create(&fibcmodule);
};
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