diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_float.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_float.py	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,750 @@
+
+import unittest, struct
+import os
+from test import test_support
+import math
+from math import isinf, isnan, copysign, ldexp
+import operator
+import random, fractions
+
+INF = float("inf")
+NAN = float("nan")
+
+class GeneralFloatCases(unittest.TestCase):
+
+    def test_float(self):
+        self.assertEqual(float(3.14), 3.14)
+        self.assertEqual(float(314), 314.0)
+        self.assertEqual(float(314L), 314.0)
+        self.assertEqual(float("  3.14  "), 3.14)
+        self.assertRaises(ValueError, float, "  0x3.1  ")
+        self.assertRaises(ValueError, float, "  -0x3.p-1  ")
+        self.assertRaises(ValueError, float, "  +0x3.p-1  ")
+        self.assertRaises(ValueError, float, "++3.14")
+        self.assertRaises(ValueError, float, "+-3.14")
+        self.assertRaises(ValueError, float, "-+3.14")
+        self.assertRaises(ValueError, float, "--3.14")
+        if test_support.have_unicode:
+            self.assertEqual(float(unicode("  3.14  ")), 3.14)
+            self.assertEqual(float(unicode("  \u0663.\u0661\u0664  ",'raw-unicode-escape')), 3.14)
+            # Implementation limitation in PyFloat_FromString()
+            self.assertRaises(ValueError, float, unicode("1"*10000))
+
+    @test_support.run_with_locale('LC_NUMERIC', 'fr_FR', 'de_DE')
+    def test_float_with_comma(self):
+        # set locale to something that doesn't use '.' for the decimal point
+        # float must not accept the locale specific decimal point but
+        # it still has to accept the normal python syntac
+        import locale
+        if not locale.localeconv()['decimal_point'] == ',':
+            return
+
+        self.assertEqual(float("  3.14  "), 3.14)
+        self.assertEqual(float("+3.14  "), 3.14)
+        self.assertEqual(float("-3.14  "), -3.14)
+        self.assertEqual(float(".14  "), .14)
+        self.assertEqual(float("3.  "), 3.0)
+        self.assertEqual(float("3.e3  "), 3000.0)
+        self.assertEqual(float("3.2e3  "), 3200.0)
+        self.assertEqual(float("2.5e-1  "), 0.25)
+        self.assertEqual(float("5e-1"), 0.5)
+        self.assertRaises(ValueError, float, "  3,14  ")
+        self.assertRaises(ValueError, float, "  +3,14  ")
+        self.assertRaises(ValueError, float, "  -3,14  ")
+        self.assertRaises(ValueError, float, "  0x3.1  ")
+        self.assertRaises(ValueError, float, "  -0x3.p-1  ")
+        self.assertRaises(ValueError, float, "  +0x3.p-1  ")
+        self.assertEqual(float("  25.e-1  "), 2.5)
+        self.assertEqual(test_support.fcmp(float("  .25e-1  "), .025), 0)
+
+    def test_floatconversion(self):
+        # Make sure that calls to __float__() work properly
+        class Foo0:
+            def __float__(self):
+                return 42.
+
+        class Foo1(object):
+            def __float__(self):
+                return 42.
+
+        class Foo2(float):
+            def __float__(self):
+                return 42.
+
+        class Foo3(float):
+            def __new__(cls, value=0.):
+                return float.__new__(cls, 2*value)
+
+            def __float__(self):
+                return self
+
+        class Foo4(float):
+            def __float__(self):
+                return 42
+
+        self.assertAlmostEqual(float(Foo0()), 42.)
+        self.assertAlmostEqual(float(Foo1()), 42.)
+        self.assertAlmostEqual(float(Foo2()), 42.)
+        self.assertAlmostEqual(float(Foo3(21)), 42.)
+        self.assertRaises(TypeError, float, Foo4(42))
+
+    def test_floatasratio(self):
+        for f, ratio in [
+                (0.875, (7, 8)),
+                (-0.875, (-7, 8)),
+                (0.0, (0, 1)),
+                (11.5, (23, 2)),
+            ]:
+            self.assertEqual(f.as_integer_ratio(), ratio)
+
+        for i in range(10000):
+            f = random.random()
+            f *= 10 ** random.randint(-100, 100)
+            n, d = f.as_integer_ratio()
+            self.assertEqual(float(n).__truediv__(d), f)
+
+        R = fractions.Fraction
+        self.assertEqual(R(0, 1),
+                         R(*float(0.0).as_integer_ratio()))
+        self.assertEqual(R(5, 2),
+                         R(*float(2.5).as_integer_ratio()))
+        self.assertEqual(R(1, 2),
+                         R(*float(0.5).as_integer_ratio()))
+        self.assertEqual(R(4728779608739021, 2251799813685248),
+                         R(*float(2.1).as_integer_ratio()))
+        self.assertEqual(R(-4728779608739021, 2251799813685248),
+                         R(*float(-2.1).as_integer_ratio()))
+        self.assertEqual(R(-2100, 1),
+                         R(*float(-2100.0).as_integer_ratio()))
+
+        self.assertRaises(OverflowError, float('inf').as_integer_ratio)
+        self.assertRaises(OverflowError, float('-inf').as_integer_ratio)
+        self.assertRaises(ValueError, float('nan').as_integer_ratio)
+
+class FormatFunctionsTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.save_formats = {'double':float.__getformat__('double'),
+                             'float':float.__getformat__('float')}
+
+    def tearDown(self):
+        float.__setformat__('double', self.save_formats['double'])
+        float.__setformat__('float', self.save_formats['float'])
+
+    def test_getformat(self):
+        self.assert_(float.__getformat__('double') in
+                     ['unknown', 'IEEE, big-endian', 'IEEE, little-endian'])
+        self.assert_(float.__getformat__('float') in
+                     ['unknown', 'IEEE, big-endian', 'IEEE, little-endian'])
+        self.assertRaises(ValueError, float.__getformat__, 'chicken')
+        self.assertRaises(TypeError, float.__getformat__, 1)
+
+    def test_setformat(self):
+        for t in 'double', 'float':
+            float.__setformat__(t, 'unknown')
+            if self.save_formats[t] == 'IEEE, big-endian':
+                self.assertRaises(ValueError, float.__setformat__,
+                                  t, 'IEEE, little-endian')
+            elif self.save_formats[t] == 'IEEE, little-endian':
+                self.assertRaises(ValueError, float.__setformat__,
+                                  t, 'IEEE, big-endian')
+            else:
+                self.assertRaises(ValueError, float.__setformat__,
+                                  t, 'IEEE, big-endian')
+                self.assertRaises(ValueError, float.__setformat__,
+                                  t, 'IEEE, little-endian')
+            self.assertRaises(ValueError, float.__setformat__,
+                              t, 'chicken')
+        self.assertRaises(ValueError, float.__setformat__,
+                          'chicken', 'unknown')
+
+BE_DOUBLE_INF = '\x7f\xf0\x00\x00\x00\x00\x00\x00'
+LE_DOUBLE_INF = ''.join(reversed(BE_DOUBLE_INF))
+BE_DOUBLE_NAN = '\x7f\xf8\x00\x00\x00\x00\x00\x00'
+LE_DOUBLE_NAN = ''.join(reversed(BE_DOUBLE_NAN))
+
+BE_FLOAT_INF = '\x7f\x80\x00\x00'
+LE_FLOAT_INF = ''.join(reversed(BE_FLOAT_INF))
+BE_FLOAT_NAN = '\x7f\xc0\x00\x00'
+LE_FLOAT_NAN = ''.join(reversed(BE_FLOAT_NAN))
+
+# on non-IEEE platforms, attempting to unpack a bit pattern
+# representing an infinity or a NaN should raise an exception.
+
+class UnknownFormatTestCase(unittest.TestCase):
+    def setUp(self):
+        self.save_formats = {'double':float.__getformat__('double'),
+                             'float':float.__getformat__('float')}
+        float.__setformat__('double', 'unknown')
+        float.__setformat__('float', 'unknown')
+
+    def tearDown(self):
+        float.__setformat__('double', self.save_formats['double'])
+        float.__setformat__('float', self.save_formats['float'])
+
+    def test_double_specials_dont_unpack(self):
+        for fmt, data in [('>d', BE_DOUBLE_INF),
+                          ('>d', BE_DOUBLE_NAN),
+                          ('<d', LE_DOUBLE_INF),
+                          ('<d', LE_DOUBLE_NAN)]:
+            self.assertRaises(ValueError, struct.unpack, fmt, data)
+
+    def test_float_specials_dont_unpack(self):
+        for fmt, data in [('>f', BE_FLOAT_INF),
+                          ('>f', BE_FLOAT_NAN),
+                          ('<f', LE_FLOAT_INF),
+                          ('<f', LE_FLOAT_NAN)]:
+            self.assertRaises(ValueError, struct.unpack, fmt, data)
+
+
+# on an IEEE platform, all we guarantee is that bit patterns
+# representing infinities or NaNs do not raise an exception; all else
+# is accident (today).
+# let's also try to guarantee that -0.0 and 0.0 don't get confused.
+
+class IEEEFormatTestCase(unittest.TestCase):
+    if float.__getformat__("double").startswith("IEEE"):
+        def test_double_specials_do_unpack(self):
+            for fmt, data in [('>d', BE_DOUBLE_INF),
+                              ('>d', BE_DOUBLE_NAN),
+                              ('<d', LE_DOUBLE_INF),
+                              ('<d', LE_DOUBLE_NAN)]:
+                struct.unpack(fmt, data)
+
+    if float.__getformat__("float").startswith("IEEE"):
+        def test_float_specials_do_unpack(self):
+            for fmt, data in [('>f', BE_FLOAT_INF),
+                              ('>f', BE_FLOAT_NAN),
+                              ('<f', LE_FLOAT_INF),
+                              ('<f', LE_FLOAT_NAN)]:
+                struct.unpack(fmt, data)
+
+    if float.__getformat__("double").startswith("IEEE"):
+        def test_negative_zero(self):
+            import math
+            def pos_pos():
+                return 0.0, math.atan2(0.0, -1)
+            def pos_neg():
+                return 0.0, math.atan2(-0.0, -1)
+            def neg_pos():
+                return -0.0, math.atan2(0.0, -1)
+            def neg_neg():
+                return -0.0, math.atan2(-0.0, -1)
+            self.assertEquals(pos_pos(), neg_pos())
+            self.assertEquals(pos_neg(), neg_neg())
+
+    if float.__getformat__("double").startswith("IEEE"):
+        def test_underflow_sign(self):
+            import math
+            # check that -1e-1000 gives -0.0, not 0.0
+            self.assertEquals(math.atan2(-1e-1000, -1), math.atan2(-0.0, -1))
+            self.assertEquals(math.atan2(float('-1e-1000'), -1),
+                              math.atan2(-0.0, -1))
+
+class ReprTestCase(unittest.TestCase):
+    def test_repr(self):
+        floats_file = open(os.path.join(os.path.split(__file__)[0],
+                           'floating_points.txt'))
+        for line in floats_file:
+            line = line.strip()
+            if not line or line.startswith('#'):
+                continue
+            v = eval(line)
+            self.assertEqual(v, eval(repr(v)))
+        floats_file.close()
+
+# Beginning with Python 2.6 float has cross platform compatible
+# ways to create and represent inf and nan
+class InfNanTest(unittest.TestCase):
+    def test_inf_from_str(self):
+        self.assert_(isinf(float("inf")))
+        self.assert_(isinf(float("+inf")))
+        self.assert_(isinf(float("-inf")))
+        self.assert_(isinf(float("infinity")))
+        self.assert_(isinf(float("+infinity")))
+        self.assert_(isinf(float("-infinity")))
+
+        self.assertEqual(repr(float("inf")), "inf")
+        self.assertEqual(repr(float("+inf")), "inf")
+        self.assertEqual(repr(float("-inf")), "-inf")
+        self.assertEqual(repr(float("infinity")), "inf")
+        self.assertEqual(repr(float("+infinity")), "inf")
+        self.assertEqual(repr(float("-infinity")), "-inf")
+
+        self.assertEqual(repr(float("INF")), "inf")
+        self.assertEqual(repr(float("+Inf")), "inf")
+        self.assertEqual(repr(float("-iNF")), "-inf")
+        self.assertEqual(repr(float("Infinity")), "inf")
+        self.assertEqual(repr(float("+iNfInItY")), "inf")
+        self.assertEqual(repr(float("-INFINITY")), "-inf")
+
+        self.assertEqual(str(float("inf")), "inf")
+        self.assertEqual(str(float("+inf")), "inf")
+        self.assertEqual(str(float("-inf")), "-inf")
+        self.assertEqual(str(float("infinity")), "inf")
+        self.assertEqual(str(float("+infinity")), "inf")
+        self.assertEqual(str(float("-infinity")), "-inf")
+
+        self.assertRaises(ValueError, float, "info")
+        self.assertRaises(ValueError, float, "+info")
+        self.assertRaises(ValueError, float, "-info")
+        self.assertRaises(ValueError, float, "in")
+        self.assertRaises(ValueError, float, "+in")
+        self.assertRaises(ValueError, float, "-in")
+        self.assertRaises(ValueError, float, "infinit")
+        self.assertRaises(ValueError, float, "+Infin")
+        self.assertRaises(ValueError, float, "-INFI")
+        self.assertRaises(ValueError, float, "infinitys")
+
+    def test_inf_as_str(self):
+        self.assertEqual(repr(1e300 * 1e300), "inf")
+        self.assertEqual(repr(-1e300 * 1e300), "-inf")
+
+        self.assertEqual(str(1e300 * 1e300), "inf")
+        self.assertEqual(str(-1e300 * 1e300), "-inf")
+
+    def test_nan_from_str(self):
+        self.assert_(isnan(float("nan")))
+        self.assert_(isnan(float("+nan")))
+        self.assert_(isnan(float("-nan")))
+
+        self.assertEqual(repr(float("nan")), "nan")
+        self.assertEqual(repr(float("+nan")), "nan")
+        self.assertEqual(repr(float("-nan")), "nan")
+
+        self.assertEqual(repr(float("NAN")), "nan")
+        self.assertEqual(repr(float("+NAn")), "nan")
+        self.assertEqual(repr(float("-NaN")), "nan")
+
+        self.assertEqual(str(float("nan")), "nan")
+        self.assertEqual(str(float("+nan")), "nan")
+        self.assertEqual(str(float("-nan")), "nan")
+
+        self.assertRaises(ValueError, float, "nana")
+        self.assertRaises(ValueError, float, "+nana")
+        self.assertRaises(ValueError, float, "-nana")
+        self.assertRaises(ValueError, float, "na")
+        self.assertRaises(ValueError, float, "+na")
+        self.assertRaises(ValueError, float, "-na")
+
+    def test_nan_as_str(self):
+        self.assertEqual(repr(1e300 * 1e300 * 0), "nan")
+        self.assertEqual(repr(-1e300 * 1e300 * 0), "nan")
+
+        self.assertEqual(str(1e300 * 1e300 * 0), "nan")
+        self.assertEqual(str(-1e300 * 1e300 * 0), "nan")
+
+    def notest_float_nan(self):
+        self.assert_(NAN.is_nan())
+        self.failIf(INF.is_nan())
+        self.failIf((0.).is_nan())
+
+    def notest_float_inf(self):
+        self.assert_(INF.is_inf())
+        self.failIf(NAN.is_inf())
+        self.failIf((0.).is_inf())
+
+fromHex = float.fromhex
+toHex = float.hex
+class HexFloatTestCase(unittest.TestCase):
+    MAX = fromHex('0x.fffffffffffff8p+1024')  # max normal
+    MIN = fromHex('0x1p-1022')                # min normal
+    TINY = fromHex('0x0.0000000000001p-1022') # min subnormal
+    EPS = fromHex('0x0.0000000000001p0') # diff between 1.0 and next float up
+
+    def identical(self, x, y):
+        # check that floats x and y are identical, or that both
+        # are NaNs
+        if isnan(x) or isnan(y):
+            if isnan(x) == isnan(y):
+                return
+        elif x == y and (x != 0.0 or copysign(1.0, x) == copysign(1.0, y)):
+            return
+        self.fail('%r not identical to %r' % (x, y))
+
+    def test_ends(self):
+        self.identical(self.MIN, ldexp(1.0, -1022))
+        self.identical(self.TINY, ldexp(1.0, -1074))
+        self.identical(self.EPS, ldexp(1.0, -52))
+        self.identical(self.MAX, 2.*(ldexp(1.0, 1023) - ldexp(1.0, 970)))
+
+    def test_invalid_inputs(self):
+        invalid_inputs = [
+            'infi',   # misspelt infinities and nans
+            '-Infinit',
+            '++inf',
+            '-+Inf',
+            '--nan',
+            '+-NaN',
+            'snan',
+            'NaNs',
+            'nna',
+            '0xnan',
+            '',
+            ' ',
+            'x1.0p0',
+            '0xX1.0p0',
+            '+ 0x1.0p0', # internal whitespace
+            '- 0x1.0p0',
+            '0 x1.0p0',
+            '0x 1.0p0',
+            '0x1 2.0p0',
+            '+0x1 .0p0',
+            '0x1. 0p0',
+            '-0x1.0 1p0',
+            '-0x1.0 p0',
+            '+0x1.0p +0',
+            '0x1.0p -0',
+            '0x1.0p 0',
+            '+0x1.0p+ 0',
+            '-0x1.0p- 0',
+            '++0x1.0p-0', # double signs
+            '--0x1.0p0',
+            '+-0x1.0p+0',
+            '-+0x1.0p0',
+            '0x1.0p++0',
+            '+0x1.0p+-0',
+            '-0x1.0p-+0',
+            '0x1.0p--0',
+            '0x1.0.p0',
+            '0x.p0', # no hex digits before or after point
+            '0x1,p0', # wrong decimal point character
+            '0x1pa',
+            u'0x1p\uff10',  # fullwidth Unicode digits
+            u'\uff10x1p0',
+            u'0x\uff11p0',
+            u'0x1.\uff10p0',
+            '0x1p0 \n 0x2p0',
+            '0x1p0\0 0x1p0',  # embedded null byte is not end of string
+            ]
+        for x in invalid_inputs:
+            try:
+                result = fromHex(x)
+            except ValueError:
+                pass
+            else:
+                self.fail('Expected float.fromhex(%r) to raise ValueError; '
+                          'got %r instead' % (x, result))
+
+
+    def test_from_hex(self):
+        MIN = self.MIN;
+        MAX = self.MAX;
+        TINY = self.TINY;
+        EPS = self.EPS;
+
+        # two spellings of infinity, with optional signs; case-insensitive
+        self.identical(fromHex('inf'), INF)
+        self.identical(fromHex('+Inf'), INF)
+        self.identical(fromHex('-INF'), -INF)
+        self.identical(fromHex('iNf'), INF)
+        self.identical(fromHex('Infinity'), INF)
+        self.identical(fromHex('+INFINITY'), INF)
+        self.identical(fromHex('-infinity'), -INF)
+        self.identical(fromHex('-iNFiNitY'), -INF)
+
+        # nans with optional sign; case insensitive
+        self.identical(fromHex('nan'), NAN)
+        self.identical(fromHex('+NaN'), NAN)
+        self.identical(fromHex('-NaN'), NAN)
+        self.identical(fromHex('-nAN'), NAN)
+
+        # variations in input format
+        self.identical(fromHex('1'), 1.0)
+        self.identical(fromHex('+1'), 1.0)
+        self.identical(fromHex('1.'), 1.0)
+        self.identical(fromHex('1.0'), 1.0)
+        self.identical(fromHex('1.0p0'), 1.0)
+        self.identical(fromHex('01'), 1.0)
+        self.identical(fromHex('01.'), 1.0)
+        self.identical(fromHex('0x1'), 1.0)
+        self.identical(fromHex('0x1.'), 1.0)
+        self.identical(fromHex('0x1.0'), 1.0)
+        self.identical(fromHex('+0x1.0'), 1.0)
+        self.identical(fromHex('0x1p0'), 1.0)
+        self.identical(fromHex('0X1p0'), 1.0)
+        self.identical(fromHex('0X1P0'), 1.0)
+        self.identical(fromHex('0x1P0'), 1.0)
+        self.identical(fromHex('0x1.p0'), 1.0)
+        self.identical(fromHex('0x1.0p0'), 1.0)
+        self.identical(fromHex('0x.1p4'), 1.0)
+        self.identical(fromHex('0x.1p04'), 1.0)
+        self.identical(fromHex('0x.1p004'), 1.0)
+        self.identical(fromHex('0x1p+0'), 1.0)
+        self.identical(fromHex('0x1P-0'), 1.0)
+        self.identical(fromHex('+0x1p0'), 1.0)
+        self.identical(fromHex('0x01p0'), 1.0)
+        self.identical(fromHex('0x1p00'), 1.0)
+        self.identical(fromHex(u'0x1p0'), 1.0)
+        self.identical(fromHex(' 0x1p0 '), 1.0)
+        self.identical(fromHex('\n 0x1p0'), 1.0)
+        self.identical(fromHex('0x1p0 \t'), 1.0)
+        self.identical(fromHex('0xap0'), 10.0)
+        self.identical(fromHex('0xAp0'), 10.0)
+        self.identical(fromHex('0xaP0'), 10.0)
+        self.identical(fromHex('0xAP0'), 10.0)
+        self.identical(fromHex('0xbep0'), 190.0)
+        self.identical(fromHex('0xBep0'), 190.0)
+        self.identical(fromHex('0xbEp0'), 190.0)
+        self.identical(fromHex('0XBE0P-4'), 190.0)
+        self.identical(fromHex('0xBEp0'), 190.0)
+        self.identical(fromHex('0xB.Ep4'), 190.0)
+        self.identical(fromHex('0x.BEp8'), 190.0)
+        self.identical(fromHex('0x.0BEp12'), 190.0)
+
+        # moving the point around
+        pi = fromHex('0x1.921fb54442d18p1')
+        self.identical(fromHex('0x.006487ed5110b46p11'), pi)
+        self.identical(fromHex('0x.00c90fdaa22168cp10'), pi)
+        self.identical(fromHex('0x.01921fb54442d18p9'), pi)
+        self.identical(fromHex('0x.03243f6a8885a3p8'), pi)
+        self.identical(fromHex('0x.06487ed5110b46p7'), pi)
+        self.identical(fromHex('0x.0c90fdaa22168cp6'), pi)
+        self.identical(fromHex('0x.1921fb54442d18p5'), pi)
+        self.identical(fromHex('0x.3243f6a8885a3p4'), pi)
+        self.identical(fromHex('0x.6487ed5110b46p3'), pi)
+        self.identical(fromHex('0x.c90fdaa22168cp2'), pi)
+        self.identical(fromHex('0x1.921fb54442d18p1'), pi)
+        self.identical(fromHex('0x3.243f6a8885a3p0'), pi)
+        self.identical(fromHex('0x6.487ed5110b46p-1'), pi)
+        self.identical(fromHex('0xc.90fdaa22168cp-2'), pi)
+        self.identical(fromHex('0x19.21fb54442d18p-3'), pi)
+        self.identical(fromHex('0x32.43f6a8885a3p-4'), pi)
+        self.identical(fromHex('0x64.87ed5110b46p-5'), pi)
+        self.identical(fromHex('0xc9.0fdaa22168cp-6'), pi)
+        self.identical(fromHex('0x192.1fb54442d18p-7'), pi)
+        self.identical(fromHex('0x324.3f6a8885a3p-8'), pi)
+        self.identical(fromHex('0x648.7ed5110b46p-9'), pi)
+        self.identical(fromHex('0xc90.fdaa22168cp-10'), pi)
+        self.identical(fromHex('0x1921.fb54442d18p-11'), pi)
+        # ...
+        self.identical(fromHex('0x1921fb54442d1.8p-47'), pi)
+        self.identical(fromHex('0x3243f6a8885a3p-48'), pi)
+        self.identical(fromHex('0x6487ed5110b46p-49'), pi)
+        self.identical(fromHex('0xc90fdaa22168cp-50'), pi)
+        self.identical(fromHex('0x1921fb54442d18p-51'), pi)
+        self.identical(fromHex('0x3243f6a8885a30p-52'), pi)
+        self.identical(fromHex('0x6487ed5110b460p-53'), pi)
+        self.identical(fromHex('0xc90fdaa22168c0p-54'), pi)
+        self.identical(fromHex('0x1921fb54442d180p-55'), pi)
+
+
+        # results that should overflow...
+        self.assertRaises(OverflowError, fromHex, '-0x1p1024')
+        self.assertRaises(OverflowError, fromHex, '0x1p+1025')
+        self.assertRaises(OverflowError, fromHex, '+0X1p1030')
+        self.assertRaises(OverflowError, fromHex, '-0x1p+1100')
+        self.assertRaises(OverflowError, fromHex, '0X1p123456789123456789')
+        self.assertRaises(OverflowError, fromHex, '+0X.8p+1025')
+        self.assertRaises(OverflowError, fromHex, '+0x0.8p1025')
+        self.assertRaises(OverflowError, fromHex, '-0x0.4p1026')
+        self.assertRaises(OverflowError, fromHex, '0X2p+1023')
+        self.assertRaises(OverflowError, fromHex, '0x2.p1023')
+        self.assertRaises(OverflowError, fromHex, '-0x2.0p+1023')
+        self.assertRaises(OverflowError, fromHex, '+0X4p+1022')
+        self.assertRaises(OverflowError, fromHex, '0x1.ffffffffffffffp+1023')
+        self.assertRaises(OverflowError, fromHex, '-0X1.fffffffffffff9p1023')
+        self.assertRaises(OverflowError, fromHex, '0X1.fffffffffffff8p1023')
+        self.assertRaises(OverflowError, fromHex, '+0x3.fffffffffffffp1022')
+        self.assertRaises(OverflowError, fromHex, '0x3fffffffffffffp+970')
+        self.assertRaises(OverflowError, fromHex, '0x10000000000000000p960')
+        self.assertRaises(OverflowError, fromHex, '-0Xffffffffffffffffp960')
+
+        # ...and those that round to +-max float
+        self.identical(fromHex('+0x1.fffffffffffffp+1023'), MAX)
+        self.identical(fromHex('-0X1.fffffffffffff7p1023'), -MAX)
+        self.identical(fromHex('0X1.fffffffffffff7fffffffffffffp1023'), MAX)
+
+        # zeros
+        self.identical(fromHex('0x0p0'), 0.0)
+        self.identical(fromHex('0x0p1000'), 0.0)
+        self.identical(fromHex('-0x0p1023'), -0.0)
+        self.identical(fromHex('0X0p1024'), 0.0)
+        self.identical(fromHex('-0x0p1025'), -0.0)
+        self.identical(fromHex('0X0p2000'), 0.0)
+        self.identical(fromHex('0x0p123456789123456789'), 0.0)
+        self.identical(fromHex('-0X0p-0'), -0.0)
+        self.identical(fromHex('-0X0p-1000'), -0.0)
+        self.identical(fromHex('0x0p-1023'), 0.0)
+        self.identical(fromHex('-0X0p-1024'), -0.0)
+        self.identical(fromHex('-0x0p-1025'), -0.0)
+        self.identical(fromHex('-0x0p-1072'), -0.0)
+        self.identical(fromHex('0X0p-1073'), 0.0)
+        self.identical(fromHex('-0x0p-1074'), -0.0)
+        self.identical(fromHex('0x0p-1075'), 0.0)
+        self.identical(fromHex('0X0p-1076'), 0.0)
+        self.identical(fromHex('-0X0p-2000'), -0.0)
+        self.identical(fromHex('-0x0p-123456789123456789'), -0.0)
+
+        # values that should underflow to 0
+        self.identical(fromHex('0X1p-1075'), 0.0)
+        self.identical(fromHex('-0X1p-1075'), -0.0)
+        self.identical(fromHex('-0x1p-123456789123456789'), -0.0)
+        self.identical(fromHex('0x1.00000000000000001p-1075'), TINY)
+        self.identical(fromHex('-0x1.1p-1075'), -TINY)
+        self.identical(fromHex('0x1.fffffffffffffffffp-1075'), TINY)
+
+        # check round-half-even is working correctly near 0 ...
+        self.identical(fromHex('0x1p-1076'), 0.0)
+        self.identical(fromHex('0X2p-1076'), 0.0)
+        self.identical(fromHex('0X3p-1076'), TINY)
+        self.identical(fromHex('0x4p-1076'), TINY)
+        self.identical(fromHex('0X5p-1076'), TINY)
+        self.identical(fromHex('0X6p-1076'), 2*TINY)
+        self.identical(fromHex('0x7p-1076'), 2*TINY)
+        self.identical(fromHex('0X8p-1076'), 2*TINY)
+        self.identical(fromHex('0X9p-1076'), 2*TINY)
+        self.identical(fromHex('0xap-1076'), 2*TINY)
+        self.identical(fromHex('0Xbp-1076'), 3*TINY)
+        self.identical(fromHex('0xcp-1076'), 3*TINY)
+        self.identical(fromHex('0Xdp-1076'), 3*TINY)
+        self.identical(fromHex('0Xep-1076'), 4*TINY)
+        self.identical(fromHex('0xfp-1076'), 4*TINY)
+        self.identical(fromHex('0x10p-1076'), 4*TINY)
+        self.identical(fromHex('-0x1p-1076'), -0.0)
+        self.identical(fromHex('-0X2p-1076'), -0.0)
+        self.identical(fromHex('-0x3p-1076'), -TINY)
+        self.identical(fromHex('-0X4p-1076'), -TINY)
+        self.identical(fromHex('-0x5p-1076'), -TINY)
+        self.identical(fromHex('-0x6p-1076'), -2*TINY)
+        self.identical(fromHex('-0X7p-1076'), -2*TINY)
+        self.identical(fromHex('-0X8p-1076'), -2*TINY)
+        self.identical(fromHex('-0X9p-1076'), -2*TINY)
+        self.identical(fromHex('-0Xap-1076'), -2*TINY)
+        self.identical(fromHex('-0xbp-1076'), -3*TINY)
+        self.identical(fromHex('-0xcp-1076'), -3*TINY)
+        self.identical(fromHex('-0Xdp-1076'), -3*TINY)
+        self.identical(fromHex('-0xep-1076'), -4*TINY)
+        self.identical(fromHex('-0Xfp-1076'), -4*TINY)
+        self.identical(fromHex('-0X10p-1076'), -4*TINY)
+
+        # ... and near MIN ...
+        self.identical(fromHex('0x0.ffffffffffffd6p-1022'), MIN-3*TINY)
+        self.identical(fromHex('0x0.ffffffffffffd8p-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffdap-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffdcp-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffdep-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffe0p-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffe2p-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffe4p-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffe6p-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffe8p-1022'), MIN-2*TINY)
+        self.identical(fromHex('0x0.ffffffffffffeap-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.ffffffffffffecp-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.ffffffffffffeep-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.fffffffffffff0p-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.fffffffffffff2p-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.fffffffffffff4p-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.fffffffffffff6p-1022'), MIN-TINY)
+        self.identical(fromHex('0x0.fffffffffffff8p-1022'), MIN)
+        self.identical(fromHex('0x0.fffffffffffffap-1022'), MIN)
+        self.identical(fromHex('0x0.fffffffffffffcp-1022'), MIN)
+        self.identical(fromHex('0x0.fffffffffffffep-1022'), MIN)
+        self.identical(fromHex('0x1.00000000000000p-1022'), MIN)
+        self.identical(fromHex('0x1.00000000000002p-1022'), MIN)
+        self.identical(fromHex('0x1.00000000000004p-1022'), MIN)
+        self.identical(fromHex('0x1.00000000000006p-1022'), MIN)
+        self.identical(fromHex('0x1.00000000000008p-1022'), MIN)
+        self.identical(fromHex('0x1.0000000000000ap-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.0000000000000cp-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.0000000000000ep-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.00000000000010p-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.00000000000012p-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.00000000000014p-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.00000000000016p-1022'), MIN+TINY)
+        self.identical(fromHex('0x1.00000000000018p-1022'), MIN+2*TINY)
+
+        # ... and near 1.0.
+        self.identical(fromHex('0x0.fffffffffffff0p0'), 1.0-EPS)
+        self.identical(fromHex('0x0.fffffffffffff1p0'), 1.0-EPS)
+        self.identical(fromHex('0X0.fffffffffffff2p0'), 1.0-EPS)
+        self.identical(fromHex('0x0.fffffffffffff3p0'), 1.0-EPS)
+        self.identical(fromHex('0X0.fffffffffffff4p0'), 1.0-EPS)
+        self.identical(fromHex('0X0.fffffffffffff5p0'), 1.0-EPS/2)
+        self.identical(fromHex('0X0.fffffffffffff6p0'), 1.0-EPS/2)
+        self.identical(fromHex('0x0.fffffffffffff7p0'), 1.0-EPS/2)
+        self.identical(fromHex('0x0.fffffffffffff8p0'), 1.0-EPS/2)
+        self.identical(fromHex('0X0.fffffffffffff9p0'), 1.0-EPS/2)
+        self.identical(fromHex('0X0.fffffffffffffap0'), 1.0-EPS/2)
+        self.identical(fromHex('0x0.fffffffffffffbp0'), 1.0-EPS/2)
+        self.identical(fromHex('0X0.fffffffffffffcp0'), 1.0)
+        self.identical(fromHex('0x0.fffffffffffffdp0'), 1.0)
+        self.identical(fromHex('0X0.fffffffffffffep0'), 1.0)
+        self.identical(fromHex('0x0.ffffffffffffffp0'), 1.0)
+        self.identical(fromHex('0X1.00000000000000p0'), 1.0)
+        self.identical(fromHex('0X1.00000000000001p0'), 1.0)
+        self.identical(fromHex('0x1.00000000000002p0'), 1.0)
+        self.identical(fromHex('0X1.00000000000003p0'), 1.0)
+        self.identical(fromHex('0x1.00000000000004p0'), 1.0)
+        self.identical(fromHex('0X1.00000000000005p0'), 1.0)
+        self.identical(fromHex('0X1.00000000000006p0'), 1.0)
+        self.identical(fromHex('0X1.00000000000007p0'), 1.0)
+        self.identical(fromHex('0x1.00000000000007ffffffffffffffffffffp0'),
+                       1.0)
+        self.identical(fromHex('0x1.00000000000008p0'), 1.0)
+        self.identical(fromHex('0x1.00000000000008000000000000000001p0'),
+                       1+EPS)
+        self.identical(fromHex('0X1.00000000000009p0'), 1.0+EPS)
+        self.identical(fromHex('0x1.0000000000000ap0'), 1.0+EPS)
+        self.identical(fromHex('0x1.0000000000000bp0'), 1.0+EPS)
+        self.identical(fromHex('0X1.0000000000000cp0'), 1.0+EPS)
+        self.identical(fromHex('0x1.0000000000000dp0'), 1.0+EPS)
+        self.identical(fromHex('0x1.0000000000000ep0'), 1.0+EPS)
+        self.identical(fromHex('0X1.0000000000000fp0'), 1.0+EPS)
+        self.identical(fromHex('0x1.00000000000010p0'), 1.0+EPS)
+        self.identical(fromHex('0X1.00000000000011p0'), 1.0+EPS)
+        self.identical(fromHex('0x1.00000000000012p0'), 1.0+EPS)
+        self.identical(fromHex('0X1.00000000000013p0'), 1.0+EPS)
+        self.identical(fromHex('0X1.00000000000014p0'), 1.0+EPS)
+        self.identical(fromHex('0x1.00000000000015p0'), 1.0+EPS)
+        self.identical(fromHex('0x1.00000000000016p0'), 1.0+EPS)
+        self.identical(fromHex('0X1.00000000000017p0'), 1.0+EPS)
+        self.identical(fromHex('0x1.00000000000017ffffffffffffffffffffp0'),
+                       1.0+EPS)
+        self.identical(fromHex('0x1.00000000000018p0'), 1.0+2*EPS)
+        self.identical(fromHex('0X1.00000000000018000000000000000001p0'),
+                       1.0+2*EPS)
+        self.identical(fromHex('0x1.00000000000019p0'), 1.0+2*EPS)
+        self.identical(fromHex('0X1.0000000000001ap0'), 1.0+2*EPS)
+        self.identical(fromHex('0X1.0000000000001bp0'), 1.0+2*EPS)
+        self.identical(fromHex('0x1.0000000000001cp0'), 1.0+2*EPS)
+        self.identical(fromHex('0x1.0000000000001dp0'), 1.0+2*EPS)
+        self.identical(fromHex('0x1.0000000000001ep0'), 1.0+2*EPS)
+        self.identical(fromHex('0X1.0000000000001fp0'), 1.0+2*EPS)
+        self.identical(fromHex('0x1.00000000000020p0'), 1.0+2*EPS)
+
+    def test_roundtrip(self):
+        def roundtrip(x):
+            return fromHex(toHex(x))
+
+        for x in [NAN, INF, self.MAX, self.MIN, self.MIN-self.TINY, self.TINY, 0.0]:
+            self.identical(x, roundtrip(x))
+            self.identical(-x, roundtrip(-x))
+
+        # fromHex(toHex(x)) should exactly recover x, for any non-NaN float x.
+        import random
+        for i in xrange(10000):
+            e = random.randrange(-1200, 1200)
+            m = random.random()
+            s = random.choice([1.0, -1.0])
+            try:
+                x = s*ldexp(m, e)
+            except OverflowError:
+                pass
+            else:
+                self.identical(x, fromHex(toHex(x)))
+
+
+def test_main():
+    test_support.run_unittest(
+        GeneralFloatCases,
+        FormatFunctionsTestCase,
+        UnknownFormatTestCase,
+        IEEEFormatTestCase,
+        ReprTestCase,
+        InfNanTest,
+        HexFloatTestCase,
+        )
+
+if __name__ == '__main__':
+    test_main()