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import contextlib
import threading
_config = threading.local()
def get_config_divide():
try:
value = _config.divide
except AttributeError:
value = _config.divide = None
return value
def get_config_over():
try:
value = _config.over
except AttributeError:
value = _config.over = None
return value
def get_config_under():
try:
value = _config.under
except AttributeError:
value = _config.under = None
return value
def get_config_invalid():
try:
value = _config.invalid
except AttributeError:
value = _config.invalid = None
return value
def get_config_linalg():
# In favor of performance, the `devInfo` input/output from cuSOLVER routine
# calls that is necessary to check the validity of the other outputs, are
# ignored, as D2H copy incurring device synchronizations would otherwise be
# required.
try:
value = _config.linalg
except AttributeError:
value = _config.linalg = 'ignore'
return value
def get_config_fallback_mode():
try:
value = _config.fallback_mode
except AttributeError:
value = _config.fallback_mode = 'ignore'
return value
@contextlib.contextmanager
def errstate(*, divide=None, over=None, under=None,
invalid=None, linalg=None, fallback_mode=None):
"""
TODO(hvy): Write docs.
"""
old_state = seterr(
divide=divide, over=over, under=under,
invalid=invalid, linalg=linalg, fallback_mode=fallback_mode)
try:
yield # Return `None` similar to `numpy.errstate`.
finally:
seterr(**old_state)
def seterr(*, divide=None, over=None, under=None,
invalid=None, linalg=None, fallback_mode=None):
"""
TODO(hvy): Write docs.
"""
old_state = geterr()
if divide is not None:
raise NotImplementedError()
if over is not None:
raise NotImplementedError()
if under is not None:
raise NotImplementedError()
if invalid is not None:
raise NotImplementedError()
if linalg is not None:
if linalg in ('ignore', 'raise'):
_config.linalg = linalg
else:
raise NotImplementedError()
if fallback_mode is not None:
if fallback_mode in ['print', 'warn', 'ignore', 'raise']:
_config.fallback_mode = fallback_mode
elif fallback_mode in ['log', 'call']:
raise NotImplementedError
else:
raise ValueError(
'{} is not a valid dispatch type'.format(fallback_mode))
_config.divide = divide
_config.under = under
_config.over = over
_config.invalid = invalid
return old_state
def geterr():
"""
TODO(hvy): Write docs.
"""
return dict(
divide=get_config_divide(),
over=get_config_over(),
under=get_config_under(),
invalid=get_config_invalid(),
linalg=get_config_linalg(),
fallback_mode=get_config_fallback_mode(),
)
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