c2f1db8f83
#pragma once has been "un-deprecated" in gcc since 3.3, and is widely supported in other compilers. I've been using and maintaining (rebasing) this patch for a while now, as it annoyed me to see #ifndef fooblahfoo, etc all over the place, almost arrogant about the annoyance of having to define all these names to perform a commen but neccicary functionality, when a completely superior alternative exists. I havn't sent it till now, cause its kindof a style change, and it is bad voodoo to mess with style that has been established by more established editors. So feel free to lambast me as a crazy bafoon. v2 - preserve externally used headers
23 lines
738 B
C
23 lines
738 B
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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#include <inttypes.h>
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#include <sys/types.h>
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uint32_t jenkins_hashword(const uint32_t *k, size_t length, uint32_t initval);
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void jenkins_hashword2(const uint32_t *k, size_t length, uint32_t *pc, uint32_t *pb);
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uint32_t jenkins_hashlittle(const void *key, size_t length, uint32_t initval);
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void jenkins_hashlittle2(const void *key, size_t length, uint32_t *pc, uint32_t *pb);
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uint32_t jenkins_hashbig(const void *key, size_t length, uint32_t initval);
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static inline uint64_t hash64(const void *data, size_t length) {
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uint32_t a = 0, b = 0;
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jenkins_hashlittle2(data, length, &a, &b);
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return ((uint64_t) a << 32ULL) | (uint64_t) b;
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}
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