ed</p>
<ul>
<li>The package uses the <strong>bit64</strong> package to provide
support for 64-bit integers. These are used extensively (e.g. for ids)
and also for numeric integer data types.</li>
<li>32 bit and 64 bit floats from HDF5 are always returned as 64 bit
floats in R. Writing 32 bit floats from R, may always incur loss of
precision of the underlying 64 bit double that is used to represent it
in R.</li>
<li>For integer data types, any HDF5 integer type that can accurately be
represented as a 32-bit