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-rw-r--r--src/zix/digest.h109
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diff --git a/src/zix/digest.h b/src/zix/digest.h
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-/*
- Copyright 2012-2021 David Robillard <d@drobilla.net>
-
- Permission to use, copy, modify, and/or distribute this software for any
- purpose with or without fee is hereby granted, provided that the above
- copyright notice and this permission notice appear in all copies.
-
- THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#ifndef ZIX_DIGEST_H
-#define ZIX_DIGEST_H
-
-#include "zix/common.h"
-
-#include <stddef.h>
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- @addtogroup zix
- @{
- @name Digest
- Functions to generate a short "digest" of data with minimal collisions.
-
- These are good general-purpose hash functions for indexing arbitrary data,
- but are not necessarily stable across platforms and should never be used for
- cryptographic purposes.
- @{
-*/
-
-/**
- Return a 32-bit hash of a buffer.
-
- This can be used for any size or alignment.
-*/
-ZIX_PURE_API
-uint32_t
-zix_digest32(uint32_t seed, const void* buf, size_t len);
-
-/**
- Return a 32-bit hash of an aligned buffer.
-
- Both the buffer and size must be aligned to 32 bits. For data that fits
- these requirements, this is equivalent to, but faster than, zix_digest32().
-*/
-ZIX_PURE_API
-uint32_t
-zix_digest32_aligned(uint32_t seed, const void* buf, size_t len);
-
-/**
- Return a 64-bit hash of a buffer.
-
- This can be used for any size or alignment.
-*/
-ZIX_PURE_API
-uint64_t
-zix_digest64(uint64_t seed, const void* buf, size_t len);
-
-/**
- Return a 64-bit hash of an aligned buffer.
-
- Both the buffer and size must be aligned to 64 bits. For data that fits
- these requirements, this is equivalent to, but faster than, zix_digest64().
-*/
-ZIX_PURE_API
-uint64_t
-zix_digest64_aligned(uint64_t seed, const void* buf, size_t len);
-
-/**
- Return a pointer-sized hash of a buffer.
-
- This can be used for any size or alignment.
-
- Internally, this simply dispatches to zix_digest32() or zix_digest64() as
- appropriate.
-*/
-ZIX_PURE_API
-size_t
-zix_digest(size_t seed, const void* buf, size_t len);
-
-/**
- Return a pointer-sized hash of an aligned buffer.
-
- Both the buffer and size must be aligned to the pointer size. For data that
- fits these requirements, this is equivalent to, but faster than,
- zix_digest().
-
- Internally, this simply dispatches to zix_digest32_aligned() or
- zix_digest64_aligned() as appropriate.
-*/
-ZIX_PURE_API
-size_t
-zix_digest_aligned(size_t seed, const void* buf, size_t len);
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif /* ZIX_DIGEST_H */