[boost] Broken unary_functions in numeric conversions

Subject: [boost] Broken unary_functions in numeric conversions
From: Gary Furnish (gfurnish_at_[hidden])
Date: 2017-08-20 21:05:39

SHA-1: 2009f0d4fc49a6db59b950a3140f8d1f58e1a8c6

* Revert "removed deprecated std::unary_function from various
conversion functors"

This reverts commit 593aafab5a7aba86f14df5f9a14a53fc4353bb00.

Without this commit
boost\libs\numeric\conversion\include\boost\numeric\conversion\detail\converter.hpp
is broken on MSVC C++17. (See
https://svn.boost.org/trac10/ticket/12972)
This is still fixed in develop, does anyone know why the changes were
reverted?  Can we get someone to actually recommit a fix?  Is numeric
conversion abandoned?  It doesn't look like it has been touched in
over a year.
Thanks