b_<wbr />register_<wbr />hbe_<wbr />ptr</a> if it could be allocated; <a href="namespacebn.html#a01f293535903e4c4777564a86a0f520b" class="m-doc">bn::<wbr />nullopt</a> otherwise.</td>
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<p>The values are not copied but referenced, so they should outlive <a href="classbn_1_1sprite__affine__mat__pb__register__hbe__ptr.html" class="m-doc">sprite_<wbr />affine_<wbr />mat_<wbr />pb_<wbr />register_<wbr />hbe_<wbr />ptr</a> to avoid dangling referenc