lib: fix unnecessary double negation

[ upstream commit f42c9ac ]

An equality expression already returns either 0 or 1.
There is no need to use double negation for these cases.

Fixes: ea672a8 ("mbuf: remove the rte_pktmbuf structure")
Fixes: a0fd91c ("mempool: rename functions with confusing names")

Signed-off-by: Ciara Power <ciara.power@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

lib/librte_mbuf/rte_mbuf.h

@@ -2092,7 +2092,7 @@ static inline int rte_pktmbuf_trim(struct rte_mbuf *m, uint16_t len)
 static inline int rte_pktmbuf_is_contiguous(const struct rte_mbuf *m)
 {
 	__rte_mbuf_sanity_check(m, 1);
-	return !!(m->nb_segs == 1);
+	return m->nb_segs == 1;
 }
 
 /**

lib/librte_mempool/rte_mempool.h

@@ -1573,7 +1573,7 @@ rte_mempool_in_use_count(const struct rte_mempool *mp);
 static inline int
 rte_mempool_full(const struct rte_mempool *mp)
 {
-	return !!(rte_mempool_avail_count(mp) == mp->size);
+	return rte_mempool_avail_count(mp) == mp->size;
 }
 
 /**
@@ -1592,7 +1592,7 @@ rte_mempool_full(const struct rte_mempool *mp)
 static inline int
 rte_mempool_empty(const struct rte_mempool *mp)
 {
-	return !!(rte_mempool_avail_count(mp) == 0);
+	return rte_mempool_avail_count(mp) == 0;
 }
 
 /**