From 02a9f3a340e441a3b12221d4a969362de5e8edd0 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Wed, 6 Jun 2018 20:35:46 +0200 Subject: Add zix data structures --- src/zix/digest.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/zix/digest.h (limited to 'src/zix/digest.h') diff --git a/src/zix/digest.h b/src/zix/digest.h new file mode 100644 index 00000000..1fde77a9 --- /dev/null +++ b/src/zix/digest.h @@ -0,0 +1,67 @@ +/* + Copyright 2012-2020 David Robillard + + 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 +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/** + Return an initial empty digest value. +*/ +ZIX_CONST_API +uint32_t +zix_digest_start(void); + +/** + Update `hash` to include `buf`, a buffer of `len` bytes. + + This can be used for any size or alignment. +*/ +ZIX_PURE_API +uint32_t +zix_digest_add(uint32_t hash, const void* buf, size_t len); + +/** + Update `hash` to include `buf`, a 64-bit aligned buffer of `len` bytes. + + Both `buf` and `len` must be evenly divisible by 8 (64 bits). +*/ +ZIX_PURE_API +uint32_t +zix_digest_add_64(uint32_t hash, const void* buf, size_t len); + +/** + Update `hash` to include `ptr`. + + This hashes the value of the pointer itself, and does not dereference `ptr`. +*/ +ZIX_CONST_API +uint32_t +zix_digest_add_ptr(uint32_t hash, const void* ptr); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* ZIX_DIGEST_H */ -- cgit v1.2.1