Provides direct access to the underlying implementation of the common
mathematical functions, generally from the system mathematical library.
This differs from
Ada.Numerics.Generic_Elementary_Functions in that
the implementation may deviate from the semantics specified for these
functions in the Reference Manual, for example
is not raised. On selected platforms, some of these functions may also
have a vector implementation that can be automatically used by the
compiler when auto-vectorization is enabled.