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## History

`polymorphic_cast` was suggested by Bjarne Stroustrup in "The C++ Programming Language".

`polymorphic_downcast` was contributed by Dave Abrahams.

`polymorphic_pointer_downcast` was contributed by Boris Rasin and `polymorphic_pointer_cast` by Antony Polukhin.

An old `numeric_cast` that was contributed by Kevlin Henney is now superseeded by the Boost Numeric Conversion Library