| 1 | /**************************************************************************
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| 2 | *
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| 3 | * bitio_gen.h -- General supoport routines for bitio
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| 4 | * Copyright (C) 1994 Neil Sharman and Alistair Moffat
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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 | * This file contains function definitions for doing general bitio operations.
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| 23 | *
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| 24 | * This file defines functions for calculation the length in bits of a number
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| 25 | * coded unary, binary, delta, gamma, elias, and bblock coding. It defines
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| 26 | * routines for calculating the parameter and bounds for bblock coding.
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| 27 | * Routines for calculating ceil and floor lg are also defined.
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| 28 | *
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| 29 | *
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| 30 | **************************************************************************/
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| 31 |
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| 32 | #ifndef H_BITIO_GEN
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| 33 | #define H_BITIO_GEN
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| 34 |
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| 35 | unsigned long BIO_Unary_Length (unsigned long val);
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| 36 |
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| 37 | unsigned long BIO_Binary_Length (unsigned long val, unsigned long b);
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| 38 |
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| 39 | unsigned long BIO_Gamma_Length (unsigned long val);
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| 40 |
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| 41 | unsigned long BIO_Delta_Length (unsigned long val);
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| 42 |
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| 43 | unsigned long BIO_Elias_Length (unsigned long val, unsigned long b, double s);
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| 44 |
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| 45 | unsigned long BIO_Bblock_Length (unsigned long val, unsigned long b);
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| 46 |
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| 47 | int BIO_Bblock_Init (int N, int p);
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| 48 |
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| 49 | int BIO_Bblock_Init_W (int N, int p);
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| 50 |
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| 51 | int BIO_Bblock_Bound_b (int N, int p, int b);
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| 52 |
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| 53 | int BIO_Bblock_Bound (int N, int p);
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| 54 |
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| 55 | int BIO_Gamma_Bound (int N, int p);
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| 56 |
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| 57 | int floorlog_2 (int b);
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| 58 |
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| 59 | int ceillog_2 (int b);
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| 60 |
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| 61 | #endif
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