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/**
* PSXSDK
*
* bitstring.h
*
* Implementation of bitstring.h, a family of macros found in *BSD
* to manipulate bit strings
*/
#ifndef _BITSTRING_H
#define _BITSTRING_H
#include <stdlib.h>
typedef unsigned char bitstr_t;
#define bitstr_size(nbits) \
( (nbits + 7) >> 3 )
#define bit_alloc(nbits) \
calloc( bitstr_size(nbits) , 1)
#define bit_decl(name, nbits) \
name[ bitstr_size(nbits) ]
#define bit_clear(name, bit) \
name[ bit >> 3 ] &= ~(1 << (bit & 7) )
#define bit_set(name, bit) \
name[ bit >> 3] |= 1 << (bit & 7)
#define bit_nclear(name, start, stop) \
do{ \
int _b__;\
for(_b__ = start; _b__ <= stop; _b__++) \
bit_clear(name, _b__);\
}while(0)
#define bit_nset(name, start, stop) \
do{ \
int _b__;\
for(_b__ = start; _b__ <= stop; _b__++) \
bit_set(name, _b__); \
}while(0)
#define bit_test(name, bit) \
( name[bit >> 3] & (1 << (bit & 7) ) )
#define bit_ffs(name, nbits, value) \
do{\
int _b__;\
for(_b__ = 0; _b__ < nbits; _b__++) \
{\
printf("bb = %d\n", _b__);\
if( bit_test(name, _b__) ) \
{\
*(value) = _b__; \
break; \
}\
}\
if( _b__ == nbits ) *(value) = -1;\
}while(0)
#define bit_ffc(name, nbits, value) \
do{\
int _b__;\
for(_b__ = 0; _b__ < nbits; _b__++) \
{\
if( !bit_test(name, _b__) ) \
{\
*(value) = _b__; \
break; \
}\
}\
if( _b__ == nbits ) *(value) = -1;\
}while(0)
#endif
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