...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Number pasing mode.
number_precision numbers = number_precision::imprecise;
This selects the way to parse numbers. The default is to parse them fast,
but with possible slight imprecision for floating point numbers with larger
mantissas. Users can also choose to parse numbers slower but with full
precision. Or to not parse them at all, and only validate numbers. The
latter mode is useful for basic_parser
instantiations that
wish to treat numbers in a custom way.