[perl #98256] Add POD for the bsgn() method.

This stops Pod::Coverage (and possibly users)
from complaining about missing documentation.

diff --git a/dist/Math-BigInt/lib/Math/BigInt.pm b/dist/Math-BigInt/lib/Math/BigInt.pm
index 1d58712..0bb8eba 100644 (file)
--- a/dist/Math-BigInt/lib/Math/BigInt.pm
+++ b/dist/Math-BigInt/lib/Math/BigInt.pm
@@ -3861,6 +3861,13 @@ Set the number to its absolute value, e.g. change the sign from '-' to '+'
 and from '-inf' to '+inf', respectively. Does nothing for NaN or positive
 numbers.
 
+=head2 bsgn()
+
+       $x->bsgn();
+
+Signum function. Set the number to -1, 0, or 1, depending on whether the
+number is negative, zero, or positive, respectivly. Does not modify NaNs.
+
 =head2 bnorm()
 
        $x->bnorm();                    # normalize (no-op)