Commit 01f94ea9 authored Nov 11, 2021 by Niklas Cassel Committed by Jim Harris Nov 11, 2021

util: add spdk_u64_is_pow2()



There already is a spdk_u32_is_pow2() function that handles uint32_t.
Add a spdk_u64_is_pow2() function that handles uint64_t.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Change-Id: Idc96680dbe280d1510aba94a6900eff64ccb4f03
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10179


Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>

parent 1f9c7a74

include/spdk/util.h

+13 −0

Original line number	Diff line number	Diff line
		@@ -110,6 +110,19 @@ spdk_u32_is_pow2(uint32_t x)
		return (x & (x - 1)) == 0;
		}

		/**
		* Check if a uint64_t is a power of 2.
		*/
		static inline bool
		spdk_u64_is_pow2(uint64_t x)
		{
		if (x == 0) {
		return false;
		}

		return (x & (x - 1)) == 0;
		}

		static inline uint64_t
		spdk_divide_round_up(uint64_t num, uint64_t divisor)
		{