These are analogous to the existing RTE_MIN3 macros and allow drivers to take compute minimum of four values without invoking the shadow warning gods.
Signed-off-by: Stephen Hemminger <[email protected]> --- lib/eal/include/rte_common.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/lib/eal/include/rte_common.h b/lib/eal/include/rte_common.h index 573bf4f2ce..79364170d6 100644 --- a/lib/eal/include/rte_common.h +++ b/lib/eal/include/rte_common.h @@ -812,6 +812,16 @@ __extension__ typedef uint64_t RTE_MARKER64[0]; (_b_min3 < _c_min3 ? _b_min3 : _c_min3); \ }) +/** + * Macro to return the minimum of four numbers + */ +#define RTE_MIN4(a, b, c, d) \ + __extension__ ({ \ + typeof (a) _min4_ab = RTE_MIN((a), (b)); \ + typeof (c) _min4_cd = RTE_MIN((c), (d)); \ + RTE_MIN(_min4_ab, _min4_cd); \ + }) + /** * Macro to return the minimum of two numbers * @@ -845,6 +855,16 @@ __extension__ typedef uint64_t RTE_MARKER64[0]; (_b_max3 > _c_max3 ? _b_max3 : _c_max3); \ }) +/** + * Macro to return the maximum of four numbers + */ +#define RTE_MAX4(a, b, c, d) \ + __extension__ ({ \ + typeof (a) _max4_ab = RTE_MAX((a), (b)); \ + typeof (c) _max4_cd = RTE_MAX((c), (d)); \ + RTE_MAX(_max4_ab, _max4_cd); \ + }) + /** * Macro to return the maximum of two numbers * -- 2.51.0
