packfile: define and use bsearch_pack()
authorDerrick Stolee <dstolee@microsoft.com>
Thu, 22 Mar 2018 17:40:09 +0000 (13:40 -0400)
committerJunio C Hamano <gitster@pobox.com>
Thu, 22 Mar 2018 18:00:07 +0000 (11:00 -0700)
commit3d475f46a8225a9cc549ac5cb2c51d6ecd9e0f7c
tree09459e67cb30070c566ceebc78d6a2b26547dc66
parent626fd982a3ead1b0aae26c242fbabaaaaf4b6062
packfile: define and use bsearch_pack()

The method bsearch_hash() generalizes binary searches using a
fanout table. The only consumer is currently find_pack_entry_one().
It requires a bit of pointer arithmetic to align the fanout table
and the lookup table depending on the pack-index version.

Extract the pack-index pointer arithmetic to a new method,
bsearch_pack(), so this can be re-used in other code paths.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
packfile.c
packfile.h