diff options
Diffstat (limited to 'src/journal/lookup3.h')
-rw-r--r-- | src/journal/lookup3.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/journal/lookup3.h b/src/journal/lookup3.h new file mode 100644 index 0000000..04e493e --- /dev/null +++ b/src/journal/lookup3.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: LicenseRef-lookup3-public-domain */ +#pragma once + +#include <inttypes.h> +#include <sys/types.h> + +#include "macro.h" + +uint32_t jenkins_hashword(const uint32_t *k, size_t length, uint32_t initval) _pure_; +void jenkins_hashword2(const uint32_t *k, size_t length, uint32_t *pc, uint32_t *pb); + +uint32_t jenkins_hashlittle(const void *key, size_t length, uint32_t initval) _pure_; +void jenkins_hashlittle2(const void *key, size_t length, uint32_t *pc, uint32_t *pb); + +uint32_t jenkins_hashbig(const void *key, size_t length, uint32_t initval) _pure_; + +static inline uint64_t jenkins_hash64(const void *data, size_t length) { + uint32_t a = 0, b = 0; + + jenkins_hashlittle2(data, length, &a, &b); + + return ((uint64_t) a << 32ULL) | (uint64_t) b; +} |