BCD arithmetics library

[doberkofler]

Would someone know where to find a good BCD arithmetics library?

[ChrisW67]

Here's one from some Google-fu: http://www.crbond.com/extended_precision.htm

If you are after arbitrary precision, rather then binary-coded-decimal, the you could look at GNU Multiple Precision Arithmetic Library (GMP) and The GNU MPFR Library