39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* dvdisaster: Additional error correction for optical media.
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* Copyright (C) 2004-2017 Carsten Gnoerlich.
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*
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* Email: carsten@dvdisaster.org -or- cgnoerlich@fsfe.org
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* Project homepage: http://www.dvdisaster.org
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*
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* This file is part of dvdisaster.
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*
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* dvdisaster is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* dvdisaster is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with dvdisaster. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "dvdisaster.h"
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/*
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* The following routine is performance critical.
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*/
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static inline int mod_fieldmax(int x)
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{
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while (x >= GF_FIELDMAX)
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{
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x -= GF_FIELDMAX;
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x = (x >> GF_SYMBOLSIZE) + (x & GF_FIELDMAX);
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}
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return x;
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}
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