[issue1182] Paticular decimal mod operation wrongly output NaN.
Hirokazu Yamamoto
report at bugs.python.org
Sun Sep 23 20:47:51 CEST 2007
Hirokazu Yamamoto
added the comment:
I tracked down, and I noticed following code was invoked.
Lib/decimal.py (release-maint25 Decimal#_rescale)
1912: if watchexp and digits > context.prec:
1913: return context._raise_error(InvalidOperation, 'Rescale > prec')
from decimal import *
d = Decimal("23.08589694291355371979265447")
print d % Decimal("2.302585092994045640179914546844") # NaN
print Decimal("0.060046012973097317993509001560")._rescale(-30) # error
Length of decimal seems to be important, so I changed length and it
seemed working.
print d % Decimal("2.302585092994045640179914547") #
0.060046012973097317993509000
Maybe is this intended behavior? Still I feel 2.6's behavior is less
suprising though...
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<http://bugs.python.org/issue1182>
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