Exemplo n.º 1
0
 def test_fmin(self):
     from numpypy import fmin, array
     nnan, nan, inf, ninf = float('-nan'), float('nan'), float('inf'), float('-inf')
     a = array((complex(ninf, 10), complex(10, ninf),
                complex( inf, 10), complex(10,  inf),
                5+5j, 5-5j, -5+5j, -5-5j,
                0+5j, 0-5j, 5, -5,
                complex(nan, 0), complex(0, nan)), dtype = complex)
     b = [inf]*a.size
     res = [a[0 ], a[1 ], b[2 ], a[3 ],
            a[4 ], a[5 ], a[6 ], a[7 ],
            a[8 ], a[9 ], a[10], a[11],
            b[12], b[13]]
     assert (fmin(a, b) == res).all()
     b = [ninf]*a.size
     res = [b[0 ], b[1 ], b[2 ], b[3 ],
            b[4 ], b[5 ], b[6 ], b[7 ],
            b[8 ], b[9 ], b[10], b[11],
            b[12], b[13]]
     assert (fmin(a, b) == res).all()
     b = [0]*a.size
     res = [a[0 ], b[1 ], b[2 ], b[3 ],
            b[4 ], b[5 ], a[6 ], a[7 ],
            b[8 ], a[9 ], b[10], a[11],
            b[12], b[13]]
     assert (fmin(a, b) == res).all()
Exemplo n.º 2
0
    def test_fmin(self):
        from numpypy import fmin, array
        import math

        nnan, nan, inf, ninf = float('-nan'), float('nan'), float('inf'), float('-inf')

        a = [ninf, -5, 0, 5, inf]
        assert (fmin(a, [ninf]*5) == [ninf]*5).all()
        assert (fmin(a, [inf]*5) == a).all()
        assert (fmin(a, [1]*5) == [ninf, -5, 0, 1, 1]).all()
        assert fmin(nan, 0) == 0
        assert fmin(0, nan) == 0
        assert math.isnan(fmin(nan, nan))
        # The numpy docs specify that the FIRST NaN should be used if both are NaN
        # use copysign on both sides to sidestep bug in nan representaion
        # on Microsoft win32
        assert math.copysign(1., fmin(nnan, nan)) == math.copysign(1., nnan)