8000 Unexpected results with inf and complex numbers (Trac #1157) · Issue #1755 · numpy/numpy · GitHub
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Unexpected results with inf and complex numbers (Trac #1157) #1755

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thouis opened this issue Oct 19, 2012 · 2 comments
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Unexpected results with inf and complex numbers (Trac #1157) #1755

thouis opened this issue Oct 19, 2012 · 2 comments
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00 - Bug component: Other
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1.4.1

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@thouis
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thouis commented Oct 19, 2012

Original ticket http://projects.scipy.org/numpy/ticket/1157 on 2009-07-01 by @cournape, assigned to unknown.

#!python
import numpy as np
a = np.complex(1, np.inf)
b = 1 + 1j * np.inf
print a
print b

Outputs:

1+infj
nan+infj
@thouis
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thouis commented Oct 19, 2012

@cournape wrote on 2009-07-01

this is actually a python bug:

complex(float("inf"), 0) * complex(0, 1)

@thouis
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thouis commented Oct 19, 2012

@cournape wrote on 2009-07-01

Actually, this is obviously correct behavior.

Time to go to sleep :)

@thouis thouis closed this as completed Oct 19, 2012
certik pushed a commit to certik/numpy that referenced this issue Nov 14, 2012
TST: mark floating point error tests as unconditional knownfail. See n…
c43a8f2 
…umpy#1755.
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