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https://github.com/aaru-dps/Aaru.Checksums.Native.git
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53 lines
2.1 KiB
C
53 lines
2.1 KiB
C
/*
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* This file is part of the Aaru Data Preservation Suite.
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* Copyright (c) 2019-2023 Natalia Portillo.
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef AARU_CHECKSUMS_NATIVE_ADLER32_H
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#define AARU_CHECKSUMS_NATIVE_ADLER32_H
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#define ADLER_MODULE 65521
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/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(ADLER_MODULE-1) <= 2^32-1 */
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#define NMAX 5552
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typedef struct
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{
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uint16_t sum1;
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uint16_t sum2;
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} adler32_ctx;
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AARU_EXPORT adler32_ctx* AARU_CALL adler32_init();
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AARU_EXPORT int AARU_CALL adler32_update(adler32_ctx* ctx, const uint8_t* data, uint32_t len);
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AARU_EXPORT int AARU_CALL adler32_final(adler32_ctx* ctx, uint32_t* checksum);
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AARU_EXPORT void AARU_CALL adler32_free(adler32_ctx* ctx);
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AARU_EXPORT void AARU_CALL adler32_slicing(uint16_t* sum1, uint16_t* sum2, const uint8_t* data, long len);
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#if defined(__x86_64__) || defined(__amd64) || defined(_M_AMD64) || defined(_M_X64) || defined(__I386__) || \
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defined(__i386__) || defined(__THW_INTEL) || defined(_M_IX86)
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AARU_EXPORT SSSE3 void AARU_CALL adler32_ssse3(uint16_t* sum1, uint16_t* sum2, const uint8_t* data, long len);
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AARU_EXPORT AVX2 void AARU_CALL adler32_avx2(uint16_t* sum1, uint16_t* sum2, const uint8_t* data, long len);
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#endif
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#if defined(__aarch64__) || defined(_M_ARM64) || defined(__arm__) || defined(_M_ARM)
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AARU_EXPORT void AARU_CALL adler32_neon(uint16_t* sum1, uint16_t* sum2, const uint8_t* data, uint32_t len);
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#endif
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#endif // AARU_CHECKSUMS_NATIVE_ADLER32_H
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