diff options
| -rw-r--r-- | include/grpc/support/useful.h | 9 | ||||
| -rw-r--r-- | test/core/support/useful_test.c | 7 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/grpc/support/useful.h b/include/grpc/support/useful.h index e1ce0455c6..6eb212a311 100644 --- a/include/grpc/support/useful.h +++ b/include/grpc/support/useful.h @@ -52,4 +52,13 @@ b = x; \ } while (0) +/** Set the \a n-th bit of \a i */ +#define GPR_BITSET(i, n) (i |= (1u << n)) + +/** Clear the \a n-th bit of \a i */ +#define GPR_BITCLEAR(i, n) (i &= ~(1u << n)) + +/** Get the \a n-th bit of \a i */ +#define GPR_BITGET(i, n) ((i & (1u << n)) != 0) + #endif /* GRPC_SUPPORT_USEFUL_H */ diff --git a/test/core/support/useful_test.c b/test/core/support/useful_test.c index feaf436379..0804a81b7c 100644 --- a/test/core/support/useful_test.c +++ b/test/core/support/useful_test.c @@ -39,6 +39,7 @@ int main(int argc, char **argv) { int four[4]; int five[5]; + gpr_uint32 bitset = 0; grpc_test_init(argc, argv); GPR_ASSERT(GPR_MIN(1, 2) == 1); @@ -55,5 +56,11 @@ int main(int argc, char **argv) { GPR_ASSERT(GPR_ARRAY_SIZE(four) == 4); GPR_ASSERT(GPR_ARRAY_SIZE(five) == 5); + GPR_ASSERT(GPR_BITSET(bitset, 3) == 8); + GPR_ASSERT(GPR_BITGET(bitset, 3) == 1); + GPR_ASSERT(GPR_BITSET(bitset, 1) == 10); + GPR_ASSERT(GPR_BITCLEAR(bitset, 3) == 2); + GPR_ASSERT(GPR_BITGET(bitset, 3) == 0); + return 0; } |