1 // Copyright (c) 2011 Google, Inc. 2 // 3 // Permission is hereby granted, free of charge, to any person obtaining a copy 4 // of this software and associated documentation files (the "Software"), to deal 5 // in the Software without restriction, including without limitation the rights 6 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 // copies of the Software, and to permit persons to whom the Software is 8 // furnished to do so, subject to the following conditions: 9 // 10 // The above copyright notice and this permission notice shall be included in 11 // all copies or substantial portions of the Software. 12 // 13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 // THE SOFTWARE. 20 21 22 /* 23 * Copyright (c) 2017 by Delphix. All rights reserved. 24 */ 25 26 #ifndef _SYS_CITYHASH_H 27 #define _SYS_CITYHASH_H extern __attribute__((visibility("default"))) 28 29 #include <sys/zfs_context.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * Define 1/2/3-argument specialized versions of cityhash4, which can reduce 37 * instruction count (especially multiplication) on some 32-bit arches. 38 */ 39 _SYS_CITYHASH_H uint64_t cityhash1(uint64_t); 40 _SYS_CITYHASH_H uint64_t cityhash2(uint64_t, uint64_t); 41 _SYS_CITYHASH_H uint64_t cityhash3(uint64_t, uint64_t, uint64_t); 42 _SYS_CITYHASH_H uint64_t cityhash4(uint64_t, uint64_t, uint64_t, uint64_t); 43 44 #ifdef __cplusplus 45 } 46 #endif 47 48 #endif /* _SYS_CITYHASH_H */ 49