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2019-05-04 François Dumont <fdumont@gcc.gnu.org> * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment. * include/bits/hashtable_policy.h (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill. (_Power2_rehash_policy::_M_bkt_for_elements): Likewise. (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not smaller than input value rather than always greater. Preserve _M_next_resize if called with 0 input. Use __builtin_floorl. (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of elements + number of insertions is greater than _M_next_resize. Start with 11 buckets if not told otherwise. Use __builtin_floorl. (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements. * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt): Preserve _M_next_resize if called with 0 input. Use __builtin_floorl. (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not told otherwise. Use __builtin_floorl. * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test to also validate _Power2_rehash_policy. * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc: Adapt. From-SVN: r270868
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.