/usr/lib/python2.7/dist-packages/mpmath/tests/test_special.py is in python-mpmath 0.19-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | from mpmath import *
def test_special():
assert inf == inf
assert inf != -inf
assert -inf == -inf
assert inf != nan
assert nan != nan
assert isnan(nan)
assert --inf == inf
assert abs(inf) == inf
assert abs(-inf) == inf
assert abs(nan) != abs(nan)
assert isnan(inf - inf)
assert isnan(inf + (-inf))
assert isnan(-inf - (-inf))
assert isnan(inf + nan)
assert isnan(-inf + nan)
assert mpf(2) + inf == inf
assert 2 + inf == inf
assert mpf(2) - inf == -inf
assert 2 - inf == -inf
assert inf > 3
assert 3 < inf
assert 3 > -inf
assert -inf < 3
assert inf > mpf(3)
assert mpf(3) < inf
assert mpf(3) > -inf
assert -inf < mpf(3)
assert not (nan < 3)
assert not (nan > 3)
assert isnan(inf * 0)
assert isnan(-inf * 0)
assert inf * 3 == inf
assert inf * -3 == -inf
assert -inf * 3 == -inf
assert -inf * -3 == inf
assert inf * inf == inf
assert -inf * -inf == inf
assert isnan(nan / 3)
assert inf / -3 == -inf
assert inf / 3 == inf
assert 3 / inf == 0
assert -3 / inf == 0
assert 0 / inf == 0
assert isnan(inf / inf)
assert isnan(inf / -inf)
assert isnan(inf / nan)
assert mpf('inf') == mpf('+inf') == inf
assert mpf('-inf') == -inf
assert isnan(mpf('nan'))
assert isinf(inf)
assert isinf(-inf)
assert not isinf(mpf(0))
assert not isinf(nan)
def test_special_powers():
assert inf**3 == inf
assert isnan(inf**0)
assert inf**-3 == 0
assert (-inf)**2 == inf
assert (-inf)**3 == -inf
assert isnan((-inf)**0)
assert (-inf)**-2 == 0
assert (-inf)**-3 == 0
assert isnan(nan**5)
assert isnan(nan**0)
def test_functions_special():
assert exp(inf) == inf
assert exp(-inf) == 0
assert isnan(exp(nan))
assert log(inf) == inf
assert isnan(log(nan))
assert isnan(sin(inf))
assert isnan(sin(nan))
assert atan(inf).ae(pi/2)
assert atan(-inf).ae(-pi/2)
assert isnan(sqrt(nan))
assert sqrt(inf) == inf
def test_convert_special():
float_inf = 1e300 * 1e300
float_ninf = -float_inf
float_nan = float_inf/float_ninf
assert mpf(3) * float_inf == inf
assert mpf(3) * float_ninf == -inf
assert isnan(mpf(3) * float_nan)
assert not (mpf(3) < float_nan)
assert not (mpf(3) > float_nan)
assert not (mpf(3) <= float_nan)
assert not (mpf(3) >= float_nan)
assert float(mpf('1e1000')) == float_inf
assert float(mpf('-1e1000')) == float_ninf
assert float(mpf('1e100000000000000000')) == float_inf
assert float(mpf('-1e100000000000000000')) == float_ninf
assert float(mpf('1e-100000000000000000')) == 0.0
def test_div_bug():
assert isnan(nan/1)
assert isnan(nan/2)
assert inf/2 == inf
assert (-inf)/2 == -inf
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