The underlying problem here is that "use bignum" makes "Math::BigInt" upgrade to "Math::BigFloat", and "Math::BigFloat" upgrade to "Math::BigRat". This works globally and is not removed by "no bignum". This upgrading is the cause of numerous problems and much unexpected behaviour. I have removed this upgrading in the most recent development version of the distribution and I no longer see the issue you are experiencing.

In reply to Re^2: Math::FixedPrecision and bignum clash by pjacklam
in thread Math::FixedPrecision and bignum clash by mje

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