Memory compare is a commonly used C library function on
data plane applications. This enables using HW offload
(e.g. vector unit) for compare operations.
Signed-off-by: Petri Savolainen <petri.savolai...@nokia.com>
---
include/odp/api/std_clib.h | 18 ++++++++++++++++++
platform/linux-generic/include/odp/std_clib.h | 5 +++++
2 files changed, 23 insertions(+)
diff --git a/include/odp/api/std_clib.h b/include/odp/api/std_clib.h
index 2119ec4..791b72f 100644
--- a/include/odp/api/std_clib.h
+++ b/include/odp/api/std_clib.h
@@ -54,6 +54,24 @@ void *odp_memcpy(void *dst, const void *src, size_t num);
void *odp_memset(void *ptr, int value, size_t num);
/**
+ * Memcmp
+ *
+ * ODP version of C library memcmp function. It compares first 'num' bytes of
+ * memory blocks pointed by 'ptr1' and 'ptr2'.
+ *
+ * @param ptr1 Pointer to a memory block
+ * @param ptr2 Pointer to a memory block
+ * @param num Number of bytes to compare
+ *
+ * @retval 0 when the contents of memory blocks match
+ * @retval <0 when the contents of memory blocks do not match, and
+ * block 'ptr1' is less than block 'ptr2'
+ * @retval >0 when the contents of memory blocks do not match, and
+ * block 'ptr1' is greater than block 'ptr2'
+ */
+int odp_memcmp(const void *ptr1, const void *ptr2, size_t num);
+
+/**
* @}
*/
diff --git a/platform/linux-generic/include/odp/std_clib.h
b/platform/linux-generic/include/odp/std_clib.h
index c939c48..11c59be 100644
--- a/platform/linux-generic/include/odp/std_clib.h
+++ b/platform/linux-generic/include/odp/std_clib.h
@@ -23,6 +23,11 @@ static inline void *odp_memset(void *ptr, int value, size_t
num)
return memset(ptr, value, num);
}
+static inline int odp_memcmp(const void *ptr1, const void *ptr2, size_t num)
+{
+ return memcmp(ptr1, ptr2, num);
+}
+
#ifdef __cplusplus
}
#endif
--
2.6.3
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