[perl #124382] [PATCH] Speed up Math::BigFloat -> blog().

# New Ticket Created by  (Peter J. Acklam) 
# Please include the string:  [perl #124382]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=124382 >


Speed up Math::BigFloat -> blog().

- Intermediate computations in blog() increases the number of digits
  significantly in some cases. Reduce the number of digits by rounding.
  However, keep some extra digits for remaining intermediate computations
  before the final rounding.

- This patch fixes CPAN RT #43924.

• [perl #124382] [PATCH] Speed up Math::BigFloat -> blog(). by perlbug-followup
• Re: [perl #124382] [PATCH] Speed up Math::BigFloat -> blog(). by Kent Fredric