60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
import pytest
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import sysconfig
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import numpy as np
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from numpy.testing import assert_, assert_raises
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# The floating point emulation on ARM EABI systems lacking a hardware FPU is
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# known to be buggy. This is an attempt to identify these hosts. It may not
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# catch all possible cases, but it catches the known cases of gh-413 and
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# gh-15562.
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hosttype = sysconfig.get_config_var('HOST_GNU_TYPE')
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arm_softfloat = False if hosttype is None else hosttype.endswith('gnueabi')
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class TestErrstate:
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@pytest.mark.skipif(arm_softfloat,
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reason='platform/cpu issue with FPU (gh-413,-15562)')
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def test_invalid(self):
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with np.errstate(all='raise', under='ignore'):
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a = -np.arange(3)
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# This should work
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with np.errstate(invalid='ignore'):
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np.sqrt(a)
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# While this should fail!
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with assert_raises(FloatingPointError):
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np.sqrt(a)
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@pytest.mark.skipif(arm_softfloat,
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reason='platform/cpu issue with FPU (gh-15562)')
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def test_divide(self):
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with np.errstate(all='raise', under='ignore'):
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a = -np.arange(3)
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# This should work
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with np.errstate(divide='ignore'):
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a // 0
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# While this should fail!
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with assert_raises(FloatingPointError):
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a // 0
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# As should this, see gh-15562
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with assert_raises(FloatingPointError):
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a // a
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def test_errcall(self):
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def foo(*args):
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print(args)
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olderrcall = np.geterrcall()
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with np.errstate(call=foo):
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assert_(np.geterrcall() is foo, 'call is not foo')
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with np.errstate(call=None):
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assert_(np.geterrcall() is None, 'call is not None')
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assert_(np.geterrcall() is olderrcall, 'call is not olderrcall')
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def test_errstate_decorator(self):
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@np.errstate(all='ignore')
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def foo():
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a = -np.arange(3)
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a // 0
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foo()
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