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(parent: 83a9cd5) | patch
util: add clz() and use __builtin_clz() if available
authorBryn M. Reeves <bmr@redhat.com>
Mon, 12 Dec 2016 12:03:50 +0000 (12:03 +0000)
committerBryn M. Reeves <bmr@redhat.com>
Tue, 13 Dec 2016 20:41:29 +0000 (20:41 +0000)
commit107bc13db3b0117e32bacede53fbd382feaf4a17
treea895240085000799e64aca8b3776f7857082476ctree
parent83a9cd5258fbd1acf293734cb4c3aba0f9ffcc9bcommit | diff
util: add clz() and use __builtin_clz() if available

Add a macro for the clz (count leading zeros) operation.

Use the GCC __builtin_clz() for clz() if it is available and fall
back to a shift based implementation on systems that do not set
HAVE___BUILTIN_CLZ.
lib/misc/util.h diff | blob | blame | history
LVM2 upstream repository (moved from fedorahosted in Feb 2017)
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