diff options
| author |   Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2016-12-08 14:07:29 +0100 |
|---|---|---|
| committer | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2016-12-08 14:10:05 +0100 |
| commit | 6b3e017e5d25f15da73f7700f7f2ac553ef1a2e9 (patch) | |
| tree | 1b1fb3f903b2282e261ade69e3c17952b3fd3464 /lib/librte_eal/common/include/rte_common.h | |
| parent | 32e04ea00cd159613e04acef75e52bfca6eeff2f (diff) | |
Imported Upstream version 16.11
Change-Id: I1944c65ddc88a9ad70f8c0eb6731552b84fbcb77
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'lib/librte_eal/common/include/rte_common.h')
| -rw-r--r-- | lib/librte_eal/common/include/rte_common.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h index 332f2a43..db5ac91c 100644 --- a/lib/librte_eal/common/include/rte_common.h +++ b/lib/librte_eal/common/include/rte_common.h @@ -59,6 +59,13 @@ extern "C" { #define asm __asm__ #endif +/** C extension macro for environments lacking C11 features. */ +#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L +#define RTE_STD_C11 __extension__ +#else +#define RTE_STD_C11 +#endif + #ifdef RTE_ARCH_STRICT_ALIGN typedef uint64_t unaligned_uint64_t __attribute__ ((aligned(1))); typedef uint32_t unaligned_uint32_t __attribute__ ((aligned(1))); @@ -268,7 +275,8 @@ rte_align64pow2(uint64_t v) /** * Macro to return the minimum of two numbers */ -#define RTE_MIN(a, b) ({ \ +#define RTE_MIN(a, b) \ + __extension__ ({ \ typeof (a) _a = (a); \ typeof (b) _b = (b); \ _a < _b ? _a : _b; \ @@ -277,7 +285,8 @@ rte_align64pow2(uint64_t v) /** * Macro to return the maximum of two numbers */ -#define RTE_MAX(a, b) ({ \ +#define RTE_MAX(a, b) \ + __extension__ ({ \ typeof (a) _a = (a); \ typeof (b) _b = (b); \ _a > _b ? _a : _b; \ @@ -326,6 +335,15 @@ rte_bsf32(uint32_t v) /** Take a macro value and get a string version of it */ #define RTE_STR(x) _RTE_STR(x) +/** + * ISO C helpers to modify format strings using variadic macros. + * This is a replacement for the ", ## __VA_ARGS__" GNU extension. + * An empty %s argument is appended to avoid a dangling comma. + */ +#define RTE_FMT(fmt, ...) fmt "%.0s", __VA_ARGS__ "" +#define RTE_FMT_HEAD(fmt, ...) fmt +#define RTE_FMT_TAIL(fmt, ...) __VA_ARGS__ + /** Mask value of type "tp" for the first "ln" bit set. */ #define RTE_LEN2MASK(ln, tp) \ ((tp)((uint64_t)-1 >> (sizeof(uint64_t) * CHAR_BIT - (ln)))) |