|Subject:||Document full list of auto-upgrading methods|
"Beware: This list is not complete." This should be the complete list: bsqrt() div() blog() bexp() bpi() bcos() bsin() batan2() batan() "All other methods upgrade themselves only when one (or all) of their arguments are of the class mentioned in $upgrade (This might change in later versions to a more sophisticated scheme):" Not sure if there's any need for any more sophistication. Especially since even perl scalars will auto-upgrade if it's messing with a fractional, like: my $x = Math::BigInt->new(1); $x += 2.5; # auto-upgrade This should also be highlighted in the docs. Overall, it looks like upgrading "just works", so it shouldn't sound like a beta feature any more in the docs.