self.assertEqual(hex(-16), '-0x10')
self.assertEqual(hex(-16), '-0x10')
self.assertRaises(TypeError, hex, {})
- self.assertEqual(hex(3.125), '0x19 * 2.0 ** -3')
- self.assertEqual(hex(0.0), '0x0 * 2.0 ** 0')
- for sv in float('nan'), float('inf'), float('-inf'):
- self.assertEqual(hex(sv), repr(sv))
- for i in range(100):
- x = random.expovariate(.05)
- self.assertEqual(eval(hex(x)), x, (x, hex(x), eval(hex(x))))
- self.assertEqual(eval(hex(-x)), -x)
- self.assertEqual(hex(-x), ('-' + hex(x)))
def test_id(self):
id(None)
self.assertEqual(oct(-100), '-0o144')
self.assertEqual(oct(-100), '-0o144')
self.assertRaises(TypeError, oct, ())
- self.assertEqual(oct(3.125), '0o31 * 2.0 ** -3')
- self.assertEqual(oct(0.0), '0o0 * 2.0 ** 0')
- for sv in float('nan'), float('inf'), float('-inf'):
- self.assertEqual(oct(sv), repr(sv))
- for i in range(100):
- x = random.expovariate(.05)
- self.assertEqual(eval(oct(x)), x)
- self.assertEqual(eval(oct(-x)), -x)
- self.assertEqual(oct(-x), ('-' + oct(x)))
def write_testfile(self):
# NB the first 4 lines are also used to test input, below
self.assertEqual(bin(2**65-1), '0b' + '1' * 65)
self.assertEqual(bin(-(2**65)), '-0b1' + '0' * 65)
self.assertEqual(bin(-(2**65-1)), '-0b' + '1' * 65)
- self.assertEqual(bin(3.125), '0b11001 * 2.0 ** -3')
- self.assertEqual(bin(0.0), '0b0 * 2.0 ** 0')
- for sv in float('nan'), float('inf'), float('-inf'):
- self.assertEqual(bin(sv), repr(sv))
- for i in range(100):
- x = random.expovariate(.05)
- self.assertEqual(eval(bin(x)), x)
- self.assertEqual(eval(bin(-x)), -x)
- self.assertEqual(bin(-x), ('-' + bin(x)))
class TestSorted(unittest.TestCase):
">>> (-.25).as_integer_ratio()\n"
"(-1, 4)");
-PyObject *
-_float_to_base(PyObject *v, int base)
-{
- PyObject *mant, *conv, *result;
- double x, fr;
- int i, exp;
-
- if (!PyFloat_Check(v)) {
- PyErr_BadInternalCall();
- return NULL;
- }
- CONVERT_TO_DOUBLE(v, x);
- if (!Py_IS_FINITE(x))
- return PyObject_Repr(v);
- fr = frexp(x, &exp);
- for (i=0; i<300 && fr != floor(fr) ; i++) {
- fr *= 2.0;
- exp--;
- }
- mant = PyLong_FromDouble(floor(fr));
- if (mant == NULL)
- return NULL;
- conv = PyNumber_ToBase(mant, base);
- Py_DECREF(mant);
- if (conv == NULL)
- return NULL;
- result = PyUnicode_FromFormat("%U * 2.0 ** %d", conv, exp);
- Py_DECREF(conv);
- return result;
-}
static PyObject *
float_subtype_new(PyTypeObject *type, PyObject *args, PyObject *kwds);