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43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
/*
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MIT License
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Copyright (c) 2022 Nicolas "Pixel" Noble
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#pragma once
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#include <stdint.h>
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// Lookup table for the yellow book's crc32
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extern const uint32_t yellow_book_crctable[256];
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// Lookup tables for Galois field's exponent and logarithmic operations
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extern const uint8_t gf_exp_table[512];
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extern const uint8_t gf_log_table[256];
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// Lookup tables for Galois field's multiplication by 2, and division by 3
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extern const uint8_t gf_mul2_table[256];
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extern const uint8_t gf_div3_table[256];
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// references for copy/paste:
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// ΣΠ·⁰¹²³⁴⁵⁶⁷⁸⁹ⁿ
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