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test_machar.py
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""" Test machar. Given recent changes to hardcode type data, we might want to get rid of both MachAr and this test at some point. """ from numpy.core._machar import MachAr import numpy.core.numerictypes as ntypes from numpy import errstate, array class TestMachAr: def _run_machar_highprec(self): # Instantiate MachAr instance with high enough precision to cause # underflow try: hiprec = ntypes.float96 MachAr(lambda v: array(v, hiprec)) except AttributeError: # Fixme, this needs to raise a 'skip' exception. "Skipping test: no ntypes.float96 available on this platform." def test_underlow(self): # Regression test for #759: # instantiating MachAr for dtype = np.float96 raises spurious warning. with errstate(all='raise'): try: self._run_machar_highprec() except FloatingPointError as e: msg = "Caught %s exception, should not have been raised." % e raise AssertionError(msg)
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