[3365] | 1 | /**************************************************************************
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| 2 | *
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| 3 | * Weights.h -- Dealing with document weights
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| 4 | * Copyright (C) 1999 Rodger McNab
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | **************************************************************************/
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| 21 |
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| 22 | #ifndef WEIGHTS_H
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| 23 | #define WEIGHTS_H
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| 24 |
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| 25 | #include <stdio.h>
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| 26 |
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| 27 |
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| 28 | class ApproxWeightsData {
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| 29 | public:
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| 30 | unsigned char bits;
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| 31 | unsigned long mask;
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| 32 | double L;
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| 33 | double B;
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| 34 | unsigned long numLevelDocs;
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| 35 | unsigned long *weightBuf;
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| 36 | float *table; // precomputed translation table
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| 37 |
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| 38 | ApproxWeightsData ();
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| 39 | ~ApproxWeightsData ();
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| 40 |
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| 41 | void Free (); // frees any allocated memory
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| 42 |
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| 43 | bool Read (FILE *approxWeightsFile, unsigned long diskPtr,
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| 44 | unsigned long _numLevelDocs);
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| 45 |
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| 46 | float GetLowerApproxDocWeight (unsigned long levelDocNum);
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| 47 | };
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| 48 |
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| 49 |
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| 50 | // diskPtr points to the start of the exact document weights
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| 51 | // for this level
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| 52 | float GetExactDocWeight (FILE *exactWeightsFile, unsigned long diskPtr,
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| 53 | unsigned long levelDocNum);
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| 54 |
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| 55 |
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| 56 | #endif
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