21 lines
864 B
C
21 lines
864 B
C
/*Copyright (C) 2008-2009 Timothy B. Terriberry (tterribe@xiph.org)
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You can redistribute this library and/or modify it under the terms of the
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GNU Lesser General Public License as published by the Free Software
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Foundation; either version 2.1 of the License, or (at your option) any later
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version.*/
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#if !defined(_bch15_5_H)
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# define _bch15_5_H (1)
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/*Encodes a raw 5-bit value _x into a 15-bit BCH(15,5) code.
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This is capable of correcting up to 3 bit errors, and detecting as many as
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5 bit errors in some cases.*/
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unsigned bch15_5_encode(unsigned _x);
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/*Corrects the received code *_y, if possible.
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The original data is located in the top five bits.
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Returns the number of errors corrected, or a negative value if decoding
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failed due to too many bit errors, in which case *_y is left unchanged.*/
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int bch15_5_correct(unsigned *_y);
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#endif
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