The Boost Numeric Conversion library is a collection of tools to describe and perform conversions between values of different numeric types.

The library includes a special alternative for a subset of std::numeric_limits<>, the bounds<> traits class, which provides a consistent way to obtain the boundary values for the range of a numeric type.

It also includes a set of trait classes which describes the compile-time properties of a conversion from a source to a target numeric type. Both arithmetic and user-defined numeric types can be used.

A policy-based converter object which uses conversion_traits to select an optimized implementation is supplied. Such implementation uses an optimal range checking code suitable for the source/target combination.