bitvec.cpp File Reference

#include <openbabel/babelconfig.h>
#include <openbabel/bitvec.h>
#include <openbabel/oberror.h>
#include <cstdlib>

Namespaces
	OpenBabel

Macros
#define	LowBit(set, bit)

Functions
OBBitVec	operator| (const OBBitVec &bv1, const OBBitVec &bv2)
OBBitVec	operator & (const OBBitVec &bv1, const OBBitVec &bv2)
OBBitVec	operator^ (const OBBitVec &bv1, const OBBitVec &bv2)
OBBitVec	operator- (const OBBitVec &bv1, const OBBitVec &bv2)
bool	operator== (const OBBitVec &bv1, const OBBitVec &bv2)
bool	operator< (const OBBitVec &bv1, const OBBitVec &bv2)
std::istream &	operator>> (std::istream &is, OBBitVec &bv)
std::ostream &	operator<< (std::ostream &os, const OBBitVec &bv)
double	Tanimoto (const OBBitVec &bv1, const OBBitVec &bv2)

Variables
static unsigned int	bitsoff [SETWORD]
const unsigned	nibble_bit_count [0x10]

Detailed Description

Fast and efficient bitstring class.

Macro Definition Documentation

LowBit

#define LowBit	(		set,
			bit
	)

Value:

{int m; \
 if (set != 0) \
 { \
 bit = 31; \
 if (set != 0x80000000) { \
 if ((m = (set & 0x0000ffff))!=0) {set = m; bit -= 16;} \
 if ((m = (set & 0x00ff00ff))!=0) {set = m; bit -= 8;} \
 if ((m = (set & 0x0f0f0f0f))!=0) {set = m; bit -= 4;} \
 if ((m = (set & 0x33333333))!=0) {set = m; bit -= 2;} \
 if ((m = (set & 0x55555555))!=0) {set = m; bit -= 1;}}} \
 else bit = -1;}

Referenced by OBBitVec::NextBit().