Go to the documentation of this file. 19 #ifndef GRPC_CORE_LIB_GPR_USEFUL_H 20 #define GRPC_CORE_LIB_GPR_USEFUL_H 24 #define GPR_MIN(a, b) ((a) < (b) ? (a) : (b)) 25 #define GPR_MAX(a, b) ((a) > (b) ? (a) : (b)) 26 #define GPR_CLAMP(a, min, max) ((a) < (min) ? (min) : (a) > (max) ? (max) : (a)) 28 #define GPR_ROTL(x, n) (((x) << (n)) | ((x) >> (sizeof(x) * 8 - (n)))) 29 #define GPR_ROTR(x, n) (((x) >> (n)) | ((x) << (sizeof(x) * 8 - (n)))) 31 #define GPR_ARRAY_SIZE(array) (sizeof(array) / sizeof(*(array))) 33 #define GPR_SWAP(type, a, b) \ 41 #define GPR_BITSET(i, n) ((*(i)) |= (1u << (n))) 44 #define GPR_BITCLEAR(i, n) ((*(i)) &= ~(1u << (n))) 47 #define GPR_BITGET(i, n) (((i) & (1u << (n))) != 0) 49 #define GPR_INTERNAL_HEXDIGIT_BITCOUNT(x) \ 50 ((x) - (((x) >> 1) & 0x77777777) - (((x) >> 2) & 0x33333333) - \ 51 (((x) >> 3) & 0x11111111)) 54 #define GPR_BITCOUNT(i) \ 55 (((GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) + \ 56 (GPR_INTERNAL_HEXDIGIT_BITCOUNT(i) >> 4)) & \ 60 #define GPR_ICMP(a, b) ((a) < (b) ? -1 : ((a) > (b) ? 1 : 0)) 62 #define GPR_HASH_POINTER(x, range) \ 63 ((((size_t)x) >> 4) ^ (((size_t)x) >> 9) ^ (((size_t)x) >> 14)) % (range)