```{index} single: packiv (B::IV) ``` ```{index} single: B::IV::packiv ``` # packiv Return the IV as 8 network-order bytes. ## Synopsis ```perl my $packed = B::svref_2object(\$n)->packiv; ``` A fixed-width, endian-independent encoding, so a compiler backend can emit an integer constant once and have it read back the same on any machine. Ask `needs64bits` first if you only want to spend 4 bytes.