return Py_None;
}
+/* Test the PyLong_AsLongLongAndOverflow API. General conversion to
+ PY_LONG_LONG is tested by test_long_api_inner. This test will
+ concentrate on proper handling of overflow.
+*/
+
+static PyObject *
+test_long_long_and_overflow(PyObject *self)
+{
+ PyObject *num, *one, *temp;
+ PY_LONG_LONG value;
+ int overflow;
+
+ /* Test that overflow is set properly for a large value. */
+ /* num is a number larger than PY_LLONG_MAX on a typical machine. */
+ num = PyLong_FromString("FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+ if (num == NULL)
+ return NULL;
+ overflow = 1234;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != -1)
+ return raiseTestError("test_long_long_and_overflow",
+ "return value was not set to -1");
+ if (overflow != 1)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not set to 1");
+
+ /* Same again, with num = PY_LLONG_MAX + 1 */
+ num = PyLong_FromLongLong(PY_LLONG_MAX);
+ if (num == NULL)
+ return NULL;
+ one = PyLong_FromLong(1L);
+ if (one == NULL) {
+ Py_DECREF(num);
+ return NULL;
+ }
+ temp = PyNumber_Add(num, one);
+ Py_DECREF(one);
+ Py_DECREF(num);
+ num = temp;
+ if (num == NULL)
+ return NULL;
+ overflow = 0;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != -1)
+ return raiseTestError("test_long_long_and_overflow",
+ "return value was not set to -1");
+ if (overflow != 1)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not set to 1");
+
+ /* Test that overflow is set properly for a large negative value. */
+ /* num is a number smaller than PY_LLONG_MIN on a typical platform */
+ num = PyLong_FromString("-FFFFFFFFFFFFFFFFFFFFFFFF", NULL, 16);
+ if (num == NULL)
+ return NULL;
+ overflow = 1234;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != -1)
+ return raiseTestError("test_long_long_and_overflow",
+ "return value was not set to -1");
+ if (overflow != -1)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not set to -1");
+
+ /* Same again, with num = PY_LLONG_MIN - 1 */
+ num = PyLong_FromLongLong(PY_LLONG_MIN);
+ if (num == NULL)
+ return NULL;
+ one = PyLong_FromLong(1L);
+ if (one == NULL) {
+ Py_DECREF(num);
+ return NULL;
+ }
+ temp = PyNumber_Subtract(num, one);
+ Py_DECREF(one);
+ Py_DECREF(num);
+ num = temp;
+ if (num == NULL)
+ return NULL;
+ overflow = 0;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != -1)
+ return raiseTestError("test_long_long_and_overflow",
+ "return value was not set to -1");
+ if (overflow != -1)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not set to -1");
+
+ /* Test that overflow is cleared properly for small values. */
+ num = PyLong_FromString("FF", NULL, 16);
+ if (num == NULL)
+ return NULL;
+ overflow = 1234;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != 0xFF)
+ return raiseTestError("test_long_long_and_overflow",
+ "expected return value 0xFF");
+ if (overflow != 0)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not cleared");
+
+ num = PyLong_FromString("-FF", NULL, 16);
+ if (num == NULL)
+ return NULL;
+ overflow = 0;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != -0xFF)
+ return raiseTestError("test_long_long_and_overflow",
+ "expected return value 0xFF");
+ if (overflow != 0)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was set incorrectly");
+
+ num = PyLong_FromLongLong(PY_LLONG_MAX);
+ if (num == NULL)
+ return NULL;
+ overflow = 1234;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != PY_LLONG_MAX)
+ return raiseTestError("test_long_long_and_overflow",
+ "expected return value PY_LLONG_MAX");
+ if (overflow != 0)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not cleared");
+
+ num = PyLong_FromLongLong(PY_LLONG_MIN);
+ if (num == NULL)
+ return NULL;
+ overflow = 0;
+ value = PyLong_AsLongLongAndOverflow(num, &overflow);
+ Py_DECREF(num);
+ if (value == -1 && PyErr_Occurred())
+ return NULL;
+ if (value != PY_LLONG_MIN)
+ return raiseTestError("test_long_long_and_overflow",
+ "expected return value PY_LLONG_MIN");
+ if (overflow != 0)
+ return raiseTestError("test_long_long_and_overflow",
+ "overflow was not cleared");
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
/* Test the L code for PyArg_ParseTuple. This should deliver a PY_LONG_LONG
for both long and int arguments. The test may leak a little memory if
it fails.
{"getargs_L", getargs_L, METH_VARARGS},
{"getargs_K", getargs_K, METH_VARARGS},
{"test_longlong_api", test_longlong_api, METH_NOARGS},
+ {"test_long_long_and_overflow",
+ (PyCFunction)test_long_long_and_overflow, METH_NOARGS},
{"test_L_code", (PyCFunction)test_L_code, METH_NOARGS},
{"codec_incrementalencoder",
(PyCFunction)codec_incrementalencoder, METH_VARARGS},
*/
#define IS_LITTLE_ENDIAN (int)*(unsigned char*)&one
+#define PY_ABS_LLONG_MIN (0-(unsigned PY_LONG_LONG)PY_LLONG_MIN)
/* Create a new long int object from a C PY_LONG_LONG int. */
}
#undef IS_LITTLE_ENDIAN
+/* Get a C long long int from a Python long or Python int object.
+ On overflow, returns -1 and sets *overflow to 1 or -1 depending
+ on the sign of the result. Otherwise *overflow is 0.
+
+ For other errors (e.g., type error), returns -1 and sets an error
+ condition.
+*/
+
+PY_LONG_LONG
+PyLong_AsLongLongAndOverflow(PyObject *vv, int *overflow)
+{
+ /* This version by Tim Peters */
+ register PyLongObject *v;
+ unsigned PY_LONG_LONG x, prev;
+ PY_LONG_LONG res;
+ Py_ssize_t i;
+ int sign;
+ int do_decref = 0; /* if nb_int was called */
+
+ *overflow = 0;
+ if (vv == NULL) {
+ PyErr_BadInternalCall();
+ return -1;
+ }
+
+ if (!PyLong_Check(vv)) {
+ PyNumberMethods *nb;
+ nb = vv->ob_type->tp_as_number;
+ if (nb == NULL || nb->nb_int == NULL) {
+ PyErr_SetString(PyExc_TypeError,
+ "an integer is required");
+ return -1;
+ }
+ vv = (*nb->nb_int) (vv);
+ if (vv == NULL)
+ return -1;
+ do_decref = 1;
+ if (!PyLong_Check(vv)) {
+ Py_DECREF(vv);
+ PyErr_SetString(PyExc_TypeError,
+ "nb_int should return int object");
+ return -1;
+ }
+ }
+
+ res = -1;
+ v = (PyLongObject *)vv;
+ i = Py_SIZE(v);
+
+ switch (i) {
+ case -1:
+ res = -(sdigit)v->ob_digit[0];
+ break;
+ case 0:
+ res = 0;
+ break;
+ case 1:
+ res = v->ob_digit[0];
+ break;
+ default:
+ sign = 1;
+ x = 0;
+ if (i < 0) {
+ sign = -1;
+ i = -(i);
+ }
+ while (--i >= 0) {
+ prev = x;
+ x = (x << PyLong_SHIFT) + v->ob_digit[i];
+ if ((x >> PyLong_SHIFT) != prev) {
+ *overflow = sign;
+ goto exit;
+ }
+ }
+ /* Haven't lost any bits, but casting to long requires extra
+ * care (see comment above).
+ */
+ if (x <= (unsigned PY_LONG_LONG)PY_LLONG_MAX) {
+ res = (PY_LONG_LONG)x * sign;
+ }
+ else if (sign < 0 && x == PY_ABS_LLONG_MIN) {
+ res = PY_LLONG_MIN;
+ }
+ else {
+ *overflow = sign;
+ /* res is already set to -1 */
+ }
+ }
+ exit:
+ if (do_decref) {
+ Py_DECREF(vv);
+ }
+ return res;
+}
+
#endif /* HAVE_LONG_LONG */
#define CHECK_BINOP(v,w) \
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