<p>I added some additional checks that we are on a 32-bit system in <a href="https://github.com/mlpack/mlpack/commit/80943dd398d652aa5ccb8461726a710d04fae925" class="commit-link"><tt>80943dd</tt></a>.  There may exist some weird architectures (e.g. s390) where sizeof(void*) isn't actually 32 bits or 64 bits but instead something weird (I'm sure there are more architectures), so in those cases I'd rather let Armadillo do its default behavior instead of trying to force a 32-bit word.</p>

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