Added a macro to swap two numbers and updated common autotest for the
same.
Signed-off-by: Shijith Thotton <sthot...@marvell.com>
---
Needed-for: drivers: add external clock support for cnxk timer
app/test/test_common.c | 4 ++++
lib/eal/include/rte_common.h | 8 ++++++++
2 files changed, 12 insertions(+)
diff --git a/app/test/test_common.c b/app/test/test_common.c
index 12bd1cad90..ef177cecb1 100644
--- a/app/test/test_common.c
+++ b/app/test/test_common.c
@@ -30,9 +30,13 @@ test_macros(int __rte_unused unused_parm)
return -1;}
uintptr_t unused = 0;
+ unsigned int smaller = SMALLER, bigger = BIGGER;
RTE_SET_USED(unused);
+ RTE_SWAP(smaller, bigger);
+ if (smaller != BIGGER && bigger != SMALLER)
+ FAIL_MACRO(RTE_SWAP);
if ((uintptr_t)RTE_PTR_ADD(SMALLER, PTR_DIFF) != BIGGER)
FAIL_MACRO(RTE_PTR_ADD);
if ((uintptr_t)RTE_PTR_SUB(BIGGER, PTR_DIFF) != SMALLER)
diff --git a/lib/eal/include/rte_common.h b/lib/eal/include/rte_common.h
index d5a32c66a5..09661a5469 100644
--- a/lib/eal/include/rte_common.h
+++ b/lib/eal/include/rte_common.h
@@ -810,6 +810,14 @@ rte_log2_u64(uint64_t v)
/** Number of elements in the array. */
#define RTE_DIM(a) (sizeof (a) / sizeof ((a)[0]))
+/** Macro to swap two numbers. */
+#define RTE_SWAP(a, b) \
+ __extension__ ({ \
+ typeof (a) _a = a; \
+ a = b; \
+ b = _a; \
+ })
+
/**
* Converts a numeric string to the equivalent uint64_t value.
* As well as straight number conversion, also recognises the suffixes
--
2.25.1
