/usr/include/sphinxbase/bitvec.h is in libsphinxbase-dev 0.4.1-0ubuntu4.
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/* ====================================================================
* Copyright (c) 1999-2004 Carnegie Mellon University. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* This work was supported in part by funding from the Defense Advanced
* Research Projects Agency and the National Science Foundation of the
* United States of America, and the CMU Sphinx Speech Consortium.
*
* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
* NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ====================================================================
*
*/
#ifndef _LIBUTIL_BITVEC_H_
#define _LIBUTIL_BITVEC_H_
/* Win32/WinCE DLL gunk */
#include <sphinxbase_export.h>
#include <sphinx_config.h>
#include <prim_type.h>
#include <ckd_alloc.h>
/**
* @file bitvec.h
* @brief An implementation of bit vectors.
*
* Implementation of basic operations of bit vectors.
*/
#ifdef __cplusplus
extern "C" {
#endif
#if 0
/* Fool Emacs. */
}
#endif
#define BITVEC_BITS 32
typedef uint32 bitvec_t;
/**
* Number of bitvec_t in a bit vector
*/
#define bitvec_size(n) (((n)+BITVEC_BITS-1)/BITVEC_BITS)
/**
* Allocate a bit vector.
*/
#define bitvec_alloc(n) ckd_calloc(bitvec_size(n), sizeof(bitvec_t))
/**
* Resize a bit vector.
*/
#define bitvec_realloc(v,n) ckd_realloc(v, bitvec_size(n) * sizeof(bitvec_t))
/**
* Free a bit vector.
*/
#define bitvec_free(v) ckd_free(v)
/**
* Set the b-th bit of bit vector v
* @param v is a vector
* @param b is the bit which will be set
*/
#define bitvec_set(v,b) (v[(b)/BITVEC_BITS] |= (1UL << ((b) & (BITVEC_BITS-1))))
/**
* Clear the b-th bit of bit vector v
* @param v is a vector
* @param b is the bit which will be set
*/
#define bitvec_clear(v,b) (v[(b)/BITVEC_BITS] &= ~(1UL << ((b) & (BITVEC_BITS-1))))
/**
* Clear all n bits in bit vector v
* @param v is a vector
* @param n is the number of bits
*/
#define bitvec_clear_all(v,n) memset(v, 0, (((n)+BITVEC_BITS-1)/BITVEC_BITS) * \
sizeof(bitvec_t))
/**
* Check whether the b-th bit is set in vector v
* @param v is a vector
* @param b is the bit which will be checked
*/
#define bitvec_is_set(v,b) (v[(b)/BITVEC_BITS] & (1UL << ((b) & (BITVEC_BITS-1))))
/**
* Check whether the b-th bit is cleared in vector v
* @param v is a vector
* @param b is the bit which will be checked
*/
#define bitvec_is_clear(v,b) (! (bitvec_is_set(v,b)))
/**
* Return the number of bits set in the given bitvector.
*
* @param vec is the bit vector
* @param len is the length of bit vector <code>vec</code>
* @return the number of bits being set in vector <code>vec</code>
*/
SPHINXBASE_EXPORT
size_t bitvec_count_set(bitvec_t *vec, /* In: Bit vector to search */
size_t len); /* In: Lenght of above bit vector */
#ifdef __cplusplus
}
#endif
#endif
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