Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the master branch, built from commit 579430ad1f.

Spirit V2.5.7

What's changed from V2.5.6 (Boost V1.68.0) to V2.5.7 (Boost V1.69.0)

Drop own FP routines in favor of boost::math. GH#392 TRAC#13531
Missing visibility mark on exception types. GH#409
Fixed transform_attribute ambiguity. GH#407 GH#396
to_utf8: Fixed wchar_t handling on Windows. GH#413 GH#395