Comment #16 on issue 652 by idichekop: Write tests for acosh, atanh, acoth
http://code.google.com/p/sympy/issues/detail?id=652

Here is a patch with a lot more tests for acosh, atanh and acoth.

The problem is that these tests unveiled problems in these functions, for  
example:

________ sympy/functions/elementary/tests/test_hyperbolic.py:test_acosh  
________
   File ".....sympy/functions/elementary/tests/test_hyperbolic.py", line  
296, in
test_acosh
     assert acosh(oo) == oo
AssertionError
________________________________________________________________________________
________ sympy/functions/elementary/tests/test_hyperbolic.py:test_atanh  
________
   File ".....sympy/functions/elementary/tests/test_hyperbolic.py", line  
336, in
test_atanh
     assert atanh(oo) == -I*pi/2
AssertionError

  tests finished: 1703 passed, 2 failed, 2 skipped, 49 xfailed in 256.65  
seconds
DO *NOT* COMMIT!

The tests are however ok. Does the correction to these modules atanh and  
acosh belong
to this issue, or we make another one?

Attachments:
        0001-Inserting-function-tests-for-acoth-acosh-and-atanh.patch  4.7 KB

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