From: Ravi Kerur <rkerur@gmail.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2] Fix rte_is_power_of_2
Date: Sat, 27 Dec 2014 10:30:44 -0500 [thread overview]
Message-ID: <1419694244-2018-1-git-send-email-rkerur@gmail.com> (raw)
In-Reply-To: <1419694115-1892-1-git-send-email-rkerur@gmail.com>
rte_is_power_of_2 returns true for 0 and 0 is not power_of_2. Fix
by checking for n.
Signed-off-by: Ravi Kerur <rkerur@gmail.com>
---
lib/librte_eal/common/include/rte_common.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index 921b91f..8ac940c 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -203,7 +203,7 @@ extern int RTE_BUILD_BUG_ON_detected_error;
static inline int
rte_is_power_of_2(uint32_t n)
{
- return ((n-1) & n) == 0;
+ return n && !(n & (n - 1));
}
/**
--
1.9.1
next prev parent reply other threads:[~2014-12-27 15:30 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-27 15:28 Ravi Kerur
2014-12-27 15:30 ` Ravi Kerur [this message]
2014-12-27 20:49 ` Neil Horman
2015-01-15 13:12 ` Thomas Monjalon
2015-01-19 2:45 ` Zhang, Helin
2015-01-19 7:21 ` David Marchand
2015-01-19 9:13 ` Thomas Monjalon
2015-01-19 9:30 ` Qiu, Michael
2015-01-19 9:49 ` David Marchand
2015-01-19 10:02 ` Qiu, Michael
2015-01-19 10:07 ` Qiu, Michael
2015-01-19 17:07 ` Ravi Kerur
2015-01-19 22:07 ` Ravi Kerur
2015-01-19 9:14 ` De Lara Guarch, Pablo
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