Rounding

An Rounding object is created by

ql.UpRounding(prec[,digit])

ql.DownRounding(prec[,digit])

ql.ClosestRounding(prec[,digit])

ql.FloorTruncation(prec[,digit])

where prec and digit are integer.

For a Rounding object U

U(r) rounds r accordingly

Creates a QuantLib rounding object