def ftest(self, name, value, expected, ulps_err=1):
if expected != 0.:
# Tolerate small deviation in proportion to expected
ulp_unit = Math.ulp(expected)
else:
# On zero, allow 2**-52. Maybe allow different slack based on name
ulp_unit = Math.ulp(1.)
# Complex expressions accumulate errors
if name in ('cosh(2)-2*cosh(1)**2', 'sinh(1)**2-cosh(1)**2'):
# ... quite steeply in these cases
ulps_err *= 5
err = value - expected
if abs(err) > ulps_err * ulp_unit:
# Use %r to display full precision.
message = '%s returned %r, expected %r (%r ulps)' % \
(name, value, expected, round(err/ulp_unit, 1))
self.fail(message)
def ftest(self, name, value, expected, ulps_err=1):
if expected != 0. :
# Tolerate small deviation in proportion to expected
ulp_unit = Math.ulp(expected)
else :
# On zero, allow 2**-52. Maybe allow different slack based on name
ulp_unit = Math.ulp(1.)
# Complex expressions accumulate errors
if name in ('cosh(2)-2*cosh(1)**2', 'sinh(1)**2-cosh(1)**2') :
# ... quite steeply in these cases
ulps_err *= 5
err = value-expected
if abs(err) > ulps_err * ulp_unit:
# Use %r to display full precision.
message = '%s returned %r, expected %r (%r ulps)' % \
(name, value, expected, round(err/ulp_unit, 1))
self.fail(message)