diff options
| author | Crt Mori <cmo@melexis.com> | 2018-01-11 11:19:57 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-02-04 10:17:21 +0000 |
| commit | 47a361634821dc66cefbfa70b9d10a91269d7f7d (patch) | |
| tree | ceba4c0edea64792e26e4d1a2363b64e374fa5cd /mm | |
| parent | 213451076bd370e55a70ff07f6575b1451ba1a9f (diff) | |
| download | linux-47a361634821dc66cefbfa70b9d10a91269d7f7d.tar.bz2 | |
lib: Add strongly typed 64bit int_sqrt
There is no option to perform 64bit integer sqrt on 32bit platform.
Added stronger typed int_sqrt64 enables the 64bit calculations to
be performed on 32bit platforms. Using same algorithm as int_sqrt()
with strong typing provides enough precision also on 32bit platforms,
but it sacrifices some performance. In case values are smaller than
ULONG_MAX the standard int_sqrt is used for calculation to maximize the
performance due to more native calculations.
Signed-off-by: Crt Mori <cmo@melexis.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions