[perl #83406] Library compatibility and API documentation (v1.991).

- dist/Math-BigInt/lib/Math/BigFloat.pm: Increment version number.

- dist/Math-BigInt/lib/Math/BigInt.pm: Add workaround for library
  inconsistencies (Math::BigInt::Calc vs. Math::BigInt::GMP). This makes
  older versions of Math::BigInt::GMP work with latest version of
  Math::BigInt.

- dist/Math-BigInt/lib/Math/BigInt/Calc.pm: Correct and extend API
  documentation. Increment version number.

- dist/Math-BigInt/lib/Math/BigInt/CalcEmu.pm: Increment version number.

1 files changed, 6 insertions, 1 deletions

diff --git a/dist/Math-BigInt/lib/Math/BigInt.pm b/dist/Math-BigInt/lib/Math/BigInt.pm
index 177894ab42..9ce39f45e4 100644
--- a/dist/Math-BigInt/lib/Math/BigInt.pm
+++ b/dist/Math-BigInt/lib/Math/BigInt.pm
@@ -18,7 +18,7 @@ package Math::BigInt;
 my $class = "Math::BigInt";
 use 5.006002;
 
-$VERSION = '1.99_05';
+$VERSION = '1.991';
 
 @ISA = qw(Exporter);
 @EXPORT_OK = qw(objectify bgcd blcm); 
@@ -1835,6 +1835,11 @@ sub bmodinv
   ($x->{value}, $x->{sign}) = $CALC->_modinv($x->{value}, $y->{value});
   return $x->bnan() if !defined $x->{value};
 
+  # Library inconsistency workaround: _modinv() in Math::BigInt::GMP versions
+  # <= 1.32 return undef rather than a "+" for the sign.
+
+  $x->{sign} = '+' unless defined $x->{sign};
+
   # When one or both arguments are negative, we have the following
   # relations.  If x and y are positive:
   #