/* * Copyright (c) 1998 * Silicon Graphics Computer Systems, Inc. * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Silicon Graphics makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. */ #ifndef __SGI_STL_BITSET #define __SGI_STL_BITSET // This implementation of bitset<> has a second template parameter, // _WordT, which defaults to unsigned long. *YOU SHOULD NOT USE // THIS FEATURE*. It is experimental, and it may be removed in // future releases. // A bitset of size N, using words of type _WordT, will have // N % (sizeof(_WordT) * CHAR_BIT) unused bits. (They are the high- // order bits in the highest word.) It is a class invariant // of class bitset<> that those unused bits are always zero. // Most of the actual code isn't contained in bitset<> itself, but in the // base class _Base_bitset. The base class works with whole words, not with // individual bits. This allows us to specialize _Base_bitset for the // important special case where the bitset is only a single word. // The C++ standard does not define the precise semantics of operator[]. // In this implementation the const version of operator[] is equivalent // to test(), except that it does no range checking. The non-const version // returns a reference to a bit, again without doing any range checking. #include // for size_t #include #include // for invalid_argument, out_of_range, overflow_error #include // for istream, ostream #define __BITS_PER_WORDT(__wt) (CHAR_BIT*sizeof(__wt)) #define __BITSET_WORDS(__n,__wt) \ ((__n) < 1 ? 1 : ((__n) + __BITS_PER_WORDT(__wt) - 1)/__BITS_PER_WORDT(__wt)) __STL_BEGIN_NAMESPACE #if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32) #pragma set woff 1209 #endif // structure to aid in counting bits template struct _Bit_count { static unsigned char _S_bit_count[256]; }; // Mapping from 8 bit unsigned integers to the index of the first one // bit: template struct _First_one { static unsigned char _S_first_one[256]; }; // // Base class: general case. // template struct _Base_bitset { _WordT _M_w[_Nw]; // 0 is the least significant word. _Base_bitset( void ) { _M_do_reset(); } _Base_bitset(unsigned long __val); static size_t _S_whichword( size_t __pos ) { return __pos / __BITS_PER_WORDT(_WordT); } static size_t _S_whichbyte( size_t __pos ) { return (__pos % __BITS_PER_WORDT(_WordT)) / CHAR_BIT; } static size_t _S_whichbit( size_t __pos ) { return __pos % __BITS_PER_WORDT(_WordT); } static _WordT _S_maskbit( size_t __pos ) { return (static_cast<_WordT>(1)) << _S_whichbit(__pos); } _WordT& _M_getword(size_t __pos) { return _M_w[_S_whichword(__pos)]; } _WordT _M_getword(size_t __pos) const { return _M_w[_S_whichword(__pos)]; } _WordT& _M_hiword() { return _M_w[_Nw - 1]; } _WordT _M_hiword() const { return _M_w[_Nw - 1]; } void _M_do_and(const _Base_bitset<_Nw,_WordT>& __x) { for ( size_t __i = 0; __i < _Nw; __i++ ) { _M_w[__i] &= __x._M_w[__i]; } } void _M_do_or(const _Base_bitset<_Nw,_WordT>& __x) { for ( size_t __i = 0; __i < _Nw; __i++ ) { _M_w[__i] |= __x._M_w[__i]; } } void _M_do_xor(const _Base_bitset<_Nw,_WordT>& __x) { for ( size_t __i = 0; __i < _Nw; __i++ ) { _M_w[__i] ^= __x._M_w[__i]; } } void _M_do_left_shift(size_t __shift); void _M_do_right_shift(size_t __shift); void _M_do_flip() { for ( size_t __i = 0; __i < _Nw; __i++ ) { _M_w[__i] = ~_M_w[__i]; } } void _M_do_set() { for ( size_t __i = 0; __i < _Nw; __i++ ) { _M_w[__i] = ~static_cast<_WordT>(0); } } void _M_do_reset() { for ( size_t __i = 0; __i < _Nw; __i++ ) { _M_w[__i] = 0; } } bool _M_is_equal(const _Base_bitset<_Nw,_WordT>& __x) const { for (size_t __i = 0; __i < _Nw; ++__i) { if (_M_w[__i] != __x._M_w[__i]) return false; } return true; } bool _M_is_any() const { for ( size_t __i = 0; __i < __BITSET_WORDS(_Nw,_WordT); __i++ ) { if ( _M_w[__i] != static_cast<_WordT>(0) ) return true; } return false; } size_t _M_do_count() const { size_t __result = 0; const unsigned char* __byte_ptr = (const unsigned char*)_M_w; const unsigned char* __end_ptr = (const unsigned char*)(_M_w+_Nw); while ( __byte_ptr < __end_ptr ) { __result += _Bit_count::_S_bit_count[*__byte_ptr]; __byte_ptr++; } return __result; } unsigned long _M_do_to_ulong() const; // find first "on" bit size_t _M_do_find_first(size_t __not_found) const; // find the next "on" bit that follows "prev" size_t _M_do_find_next(size_t __prev, size_t __not_found) const; }; // // Definitions of non-inline functions from _Base_bitset. // template _Base_bitset<_Nw, _WordT>::_Base_bitset(unsigned long __val) { _M_do_reset(); const size_t __n = min(sizeof(unsigned long)*CHAR_BIT, __BITS_PER_WORDT(_WordT)*_Nw); for(size_t __i = 0; __i < __n; ++__i, __val >>= 1) if ( __val & 0x1 ) _M_getword(__i) |= _S_maskbit(__i); } template void _Base_bitset<_Nw, _WordT>::_M_do_left_shift(size_t __shift) { if (__shift != 0) { const size_t __wshift = __shift / __BITS_PER_WORDT(_WordT); const size_t __offset = __shift % __BITS_PER_WORDT(_WordT); const size_t __sub_offset = __BITS_PER_WORDT(_WordT) - __offset; size_t __n = _Nw - 1; for ( ; __n > __wshift; --__n) _M_w[__n] = (_M_w[__n - __wshift] << __offset) | (_M_w[__n - __wshift - 1] >> __sub_offset); if (__n == __wshift) _M_w[__n] = _M_w[0] << __offset; for (size_t __n1 = 0; __n1 < __n; ++__n1) _M_w[__n1] = static_cast<_WordT>(0); } } template void _Base_bitset<_Nw, _WordT>::_M_do_right_shift(size_t __shift) { if (__shift != 0) { const size_t __wshift = __shift / __BITS_PER_WORDT(_WordT); const size_t __offset = __shift % __BITS_PER_WORDT(_WordT); const size_t __sub_offset = __BITS_PER_WORDT(_WordT) - __offset; const size_t __limit = _Nw - __wshift - 1; size_t __n = 0; for ( ; __n < __limit; ++__n) _M_w[__n] = (_M_w[__n + __wshift] >> __offset) | (_M_w[__n + __wshift + 1] << __sub_offset); _M_w[__limit] = _M_w[_Nw-1] >> __offset; for (size_t __n1 = __limit + 1; __n1 < _Nw; ++__n1) _M_w[__n1] = static_cast<_WordT>(0); } } template unsigned long _Base_bitset<_Nw, _WordT>::_M_do_to_ulong() const { const overflow_error __overflow("bitset"); if (sizeof(_WordT) >= sizeof(unsigned long)) { for (size_t __i = 1; __i < _Nw; ++__i) if (_M_w[__i]) __STL_THROW(__overflow); const _WordT __mask = static_cast<_WordT>(static_cast(-1)); if (_M_w[0] & ~__mask) __STL_THROW(__overflow); return static_cast(_M_w[0] & __mask); } else { // sizeof(_WordT) < sizeof(unsigned long). const size_t __nwords = (sizeof(unsigned long) + sizeof(_WordT) - 1) / sizeof(_WordT); size_t __min_nwords = __nwords; if (_Nw > __nwords) { for (size_t __i = __nwords; __i < _Nw; ++__i) if (_M_w[__i]) __STL_THROW(__overflow); } else __min_nwords = _Nw; // If unsigned long is 8 bytes and _WordT is 6 bytes, then an unsigned // long consists of all of one word plus 2 bytes from another word. const size_t __part = sizeof(unsigned long) % sizeof(_WordT); if (__part != 0 && __nwords <= _Nw && (_M_w[__min_nwords - 1] >> ((sizeof(_WordT) - __part) * CHAR_BIT)) != 0) __STL_THROW(__overflow); unsigned long __result = 0; for (size_t __i = 0; __i < __min_nwords; ++__i) { __result |= static_cast( _M_w[__i]) << (__i * sizeof(_WordT) * CHAR_BIT); } return __result; } } // End _M_do_to_ulong template size_t _Base_bitset<_Nw, _WordT>::_M_do_find_first(size_t __not_found) const { for ( size_t __i = 0; __i < _Nw; __i++ ) { _WordT __thisword = _M_w[__i]; if ( __thisword != static_cast<_WordT>(0) ) { // find byte within word for ( size_t __j = 0; __j < sizeof(_WordT); __j++ ) { unsigned char __this_byte = static_cast(__thisword & (~(unsigned char)0)); if ( __this_byte ) return __i*__BITS_PER_WORDT(_WordT) + __j*CHAR_BIT + _First_one::_S_first_one[__this_byte]; __thisword >>= CHAR_BIT; } } } // not found, so return an indication of failure. return __not_found; } template size_t _Base_bitset<_Nw, _WordT>::_M_do_find_next(size_t __prev, size_t __not_found) const { // make bound inclusive ++__prev; // check out of bounds if ( __prev >= _Nw * __BITS_PER_WORDT(_WordT) ) return __not_found; // search first word size_t __i = _S_whichword(__prev); _WordT __thisword = _M_w[__i]; // mask off bits below bound __thisword &= (~static_cast<_WordT>(0)) << _S_whichbit(__prev); if ( __thisword != static_cast<_WordT>(0) ) { // find byte within word // get first byte into place __thisword >>= _S_whichbyte(__prev) * CHAR_BIT; for ( size_t __j = _S_whichbyte(__prev); __j < sizeof(_WordT); __j++ ) { unsigned char __this_byte = static_cast(__thisword & (~(unsigned char)0)); if ( __this_byte ) return __i*__BITS_PER_WORDT(_WordT) + __j*CHAR_BIT + _First_one::_S_first_one[__this_byte]; __thisword >>= CHAR_BIT; } } // check subsequent words __i++; for ( ; __i < _Nw; __i++ ) { _WordT __thisword = _M_w[__i]; if ( __thisword != static_cast<_WordT>(0) ) { // find byte within word for ( size_t __j = 0; __j < sizeof(_WordT); __j++ ) { unsigned char __this_byte = static_cast(__thisword & (~(unsigned char)0)); if ( __this_byte ) return __i*__BITS_PER_WORDT(_WordT) + __j*CHAR_BIT + _First_one::_S_first_one[__this_byte]; __thisword >>= CHAR_BIT; } } } // not found, so return an indication of failure. return __not_found; } // end _M_do_find_next // ------------------------------------------------------------ // // Base class: specialization for a single word. // template struct _Base_bitset<1, _WordT> { _WordT _M_w; _Base_bitset( void ) { _M_do_reset(); } _Base_bitset(unsigned long __val); static size_t _S_whichword( size_t __pos ) { return __pos / __BITS_PER_WORDT(_WordT); } static size_t _S_whichbyte( size_t __pos ) { return (__pos % __BITS_PER_WORDT(_WordT)) / CHAR_BIT; } static size_t _S_whichbit( size_t __pos ) { return __pos % __BITS_PER_WORDT(_WordT); } static _WordT _S_maskbit( size_t __pos ) { return (static_cast<_WordT>(1)) << _S_whichbit(__pos); } _WordT& _M_getword(size_t) { return _M_w; } _WordT _M_getword(size_t) const { return _M_w; } _WordT& _M_hiword() { return _M_w; } _WordT _M_hiword() const { return _M_w; } void _M_do_and(const _Base_bitset<1,_WordT>& __x) { _M_w &= __x._M_w; } void _M_do_or(const _Base_bitset<1,_WordT>& __x) { _M_w |= __x._M_w; } void _M_do_xor(const _Base_bitset<1,_WordT>& __x) { _M_w ^= __x._M_w; } void _M_do_left_shift(size_t __shift) { _M_w <<= __shift; } void _M_do_right_shift(size_t __shift) { _M_w >>= __shift; } void _M_do_flip() { _M_w = ~_M_w; } void _M_do_set() { _M_w = ~static_cast<_WordT>(0); } void _M_do_reset() { _M_w = 0; } bool _M_is_equal(const _Base_bitset<1,_WordT>& __x) const { return _M_w == __x._M_w; } bool _M_is_any() const { return _M_w != 0; } size_t _M_do_count() const { size_t __result = 0; const unsigned char* __byte_ptr = (const unsigned char*)&_M_w; const unsigned char* __end_ptr = ((const unsigned char*)&_M_w)+sizeof(_M_w); while ( __byte_ptr < __end_ptr ) { __result += _Bit_count::_S_bit_count[*__byte_ptr]; __byte_ptr++; } return __result; } unsigned long _M_do_to_ulong() const { if (sizeof(_WordT) <= sizeof(unsigned long)) return static_cast(_M_w); else { const _WordT __mask = static_cast<_WordT>(static_cast(-1)); if (_M_w & ~__mask) __STL_THROW(overflow_error("bitset")); return static_cast(_M_w); } } size_t _M_do_find_first(size_t __not_found) const; // find the next "on" bit that follows "prev" size_t _M_do_find_next(size_t __prev, size_t __not_found) const; }; // // Definitions of non-inline functions from the single-word version of // _Base_bitset. // template _Base_bitset<1, _WordT>::_Base_bitset(unsigned long __val) { _M_do_reset(); const size_t __n = min(sizeof(unsigned long)*CHAR_BIT, __BITS_PER_WORDT(_WordT)*_Nw); for(size_t __i = 0; __i < __n; ++__i, __val >>= 1) if ( __val & 0x1 ) _M_w |= _S_maskbit(__i); } template size_t _Base_bitset<1, _WordT>::_M_do_find_first(size_t __not_found) const { _WordT __thisword = _M_w; if ( __thisword != static_cast<_WordT>(0) ) { // find byte within word for ( size_t __j = 0; __j < sizeof(_WordT); __j++ ) { unsigned char __this_byte = static_cast(__thisword & (~(unsigned char)0)); if ( __this_byte ) return __j*CHAR_BIT + _First_one::_S_first_one[__this_byte]; __thisword >>= CHAR_BIT; } } // not found, so return a value that indicates failure. return __not_found; } template size_t _Base_bitset<1, _WordT>::_M_do_find_next(size_t __prev, size_t __not_found ) const { // make bound inclusive ++__prev; // check out of bounds if ( __prev >= __BITS_PER_WORDT(_WordT) ) return __not_found; // search first (and only) word _WordT __thisword = _M_w; // mask off bits below bound __thisword &= (~static_cast<_WordT>(0)) << _S_whichbit(__prev); if ( __thisword != static_cast<_WordT>(0) ) { // find byte within word // get first byte into place __thisword >>= _S_whichbyte(__prev) * CHAR_BIT; for ( size_t __j = _S_whichbyte(__prev); __j < sizeof(_WordT); __j++ ) { unsigned char __this_byte = static_cast(__thisword & (~(unsigned char)0)); if ( __this_byte ) return __j*CHAR_BIT + _First_one::_S_first_one[__this_byte]; __thisword >>= CHAR_BIT; } } // not found, so return a value that indicates failure. return __not_found; } // end _M_do_find_next // // One last specialization: _M_do_to_ulong() and the constructor from // unsigned long are very simple if the bitset consists of a single // word of type unsigned long. // template<> inline unsigned long _Base_bitset<1, unsigned long>::_M_do_to_ulong() const { return _M_w; } template<> inline _Base_bitset<1, unsigned long>::_Base_bitset(unsigned long __val) { _M_w = __val; } // ------------------------------------------------------------ // Helper class to zero out the unused high-order bits in the highest word. template struct _Sanitize { static void _M_do_sanitize(_WordT& __val) { __val &= ~((~static_cast<_WordT>(0)) << _Extrabits); } }; template struct _Sanitize<_WordT, 0> { static void _M_do_sanitize(_WordT) {} }; // ------------------------------------------------------------ // Class bitset. // _Nb may be any nonzero number of type size_t. // Type _WordT may be any unsigned integral type. template class bitset : private _Base_bitset<__BITSET_WORDS(_Nb,_WordT), _WordT> { private: typedef _Base_bitset<__BITSET_WORDS(_Nb,_WordT), _WordT> _Base; // Import base's protected interface. Necessary because of new template // name resolution rules. using _Base::_S_whichword; using _Base::_S_whichbyte; using _Base::_S_whichbit; using _Base::_S_maskbit; using _Base::_M_getword; using _Base::_M_hiword; using _Base::_M_do_and; using _Base::_M_do_or; using _Base::_M_do_xor; using _Base::_M_do_left_shift; using _Base::_M_do_right_shift; using _Base::_M_do_flip; using _Base::_M_do_set; using _Base::_M_do_reset; using _Base::_M_is_equal; using _Base::_M_is_any; using _Base::_M_do_count; using _Base::_M_do_to_ulong; using _Base::_M_do_find_first; using _Base::_M_do_find_next; private: void _M_do_sanitize() { _Sanitize<_WordT,_Nb%__BITS_PER_WORDT(_WordT) > ::_M_do_sanitize(_M_hiword()); } public: // bit reference: class reference { friend class bitset; _WordT *_M_wp; size_t _M_bpos; // left undefined reference(); reference( bitset& __b, size_t __pos ) { _M_wp = &__b._M_getword(__pos); _M_bpos = _S_whichbit(__pos); } public: ~reference() {} // for b[i] = __x; reference& operator=(bool __x) { if ( __x ) *_M_wp |= _S_maskbit(_M_bpos); else *_M_wp &= ~_S_maskbit(_M_bpos); return *this; } // for b[i] = b[__j]; reference& operator=(const reference& __j) { if ( (*(__j._M_wp) & _S_maskbit(__j._M_bpos)) ) *_M_wp |= _S_maskbit(_M_bpos); else *_M_wp &= ~_S_maskbit(_M_bpos); return *this; } // flips the bit bool operator~() const { return (*(_M_wp) & _S_maskbit(_M_bpos)) == 0; } // for __x = b[i]; operator bool() const { return (*(_M_wp) & _S_maskbit(_M_bpos)) != 0; } // for b[i].flip(); reference& flip() { *_M_wp ^= _S_maskbit(_M_bpos); return *this; } }; // 23.3.5.1 constructors: bitset() {} bitset(unsigned long __val) : _Base_bitset<__BITSET_WORDS(_Nb,_WordT), _WordT>(__val) {} template explicit bitset(const basic_string<_CharT,_Traits,_Alloc>& __s, size_t __pos = 0, size_t __n = basic_string<_CharT,_Traits,_Alloc>::npos) : _Base() { if (__pos > __s.size()) __STL_THROW(out_of_range("bitset")); _M_copy_from_string(__s, __pos, __n); } // 23.3.5.2 bitset operations: bitset<_Nb,_WordT>& operator&=(const bitset<_Nb,_WordT>& __rhs) { _M_do_and(__rhs); return *this; } bitset<_Nb,_WordT>& operator|=(const bitset<_Nb,_WordT>& __rhs) { _M_do_or(__rhs); return *this; } bitset<_Nb,_WordT>& operator^=(const bitset<_Nb,_WordT>& __rhs) { _M_do_xor(__rhs); return *this; } bitset<_Nb,_WordT>& operator<<=(size_t __pos) { _M_do_left_shift(__pos); _M_do_sanitize(); return *this; } bitset<_Nb,_WordT>& operator>>=(size_t __pos) { _M_do_right_shift(__pos); _M_do_sanitize(); return *this; } // // Extension: // Versions of single-bit set, reset, flip, test with no range checking. // bitset<_Nb,_WordT>& _Unchecked_set(size_t __pos) { _M_getword(__pos) |= _S_maskbit(__pos); return *this; } bitset<_Nb,_WordT>& _Unchecked_set(size_t __pos, int __val) { if (__val) _M_getword(__pos) |= _S_maskbit(__pos); else _M_getword(__pos) &= ~_S_maskbit(__pos); return *this; } bitset<_Nb,_WordT>& _Unchecked_reset(size_t __pos) { _M_getword(__pos) &= ~_S_maskbit(__pos); return *this; } bitset<_Nb,_WordT>& _Unchecked_flip(size_t __pos) { _M_getword(__pos) ^= _S_maskbit(__pos); return *this; } bool _Unchecked_test(size_t __pos) const { return (_M_getword(__pos) & _S_maskbit(__pos)) != static_cast<_WordT>(0); } // Set, reset, and flip. bitset<_Nb,_WordT>& set() { _M_do_set(); _M_do_sanitize(); return *this; } bitset<_Nb,_WordT>& set(size_t __pos) { if (__pos >= _Nb) __STL_THROW(out_of_range("bitset")); return _Unchecked_set(__pos); } bitset<_Nb,_WordT>& set(size_t __pos, int __val) { if (__pos >= _Nb) __STL_THROW(out_of_range("bitset")); return _Unchecked_set(__pos, __val); } bitset<_Nb,_WordT>& reset() { _M_do_reset(); return *this; } bitset<_Nb,_WordT>& reset(size_t __pos) { if (__pos >= _Nb) __STL_THROW(out_of_range("bitset")); return _Unchecked_reset(__pos); } bitset<_Nb,_WordT>& flip() { _M_do_flip(); _M_do_sanitize(); return *this; } bitset<_Nb,_WordT>& flip(size_t __pos) { if (__pos >= _Nb) __STL_THROW(out_of_range("bitset")); return _Unchecked_flip(__pos); } bitset<_Nb,_WordT> operator~() const { return bitset<_Nb,_WordT>(*this).flip(); } // element access: //for b[i]; reference operator[](size_t __pos) { return reference(*this,__pos); } bool operator[](size_t __pos) const { return _Unchecked_test(__pos); } unsigned long to_ulong() const { return _M_do_to_ulong(); } #if __STL_EXPLICIT_FUNCTION_TMPL_ARGS template basic_string<_CharT, _Traits, _Alloc> to_string() const { basic_string<_CharT, _Traits, _Alloc> __result; _M_copy_to_string(__result); return __result; } #endif /* __STL_EXPLICIT_FUNCTION_TMPL_ARGS */ // Helper functions for string operations. template void _M_copy_from_string(const basic_string<_CharT,_Traits,_Alloc>& __s, size_t, size_t); // Helper functions for string operations. template void _M_copy_to_string(basic_string<_CharT,_Traits,_Alloc>&) const; size_t count() const { return _M_do_count(); } size_t size() const { return _Nb; } bool operator==(const bitset<_Nb,_WordT>& __rhs) const { return _M_is_equal(__rhs); } bool operator!=(const bitset<_Nb,_WordT>& __rhs) const { return !_M_is_equal(__rhs); } bool test(size_t __pos) const { if (__pos > _Nb) __STL_THROW(out_of_range("bitset")); return _Unchecked_test(__pos); } bool any() const { return _M_is_any(); } bool none() const { return !_M_is_any(); } bitset<_Nb,_WordT> operator<<(size_t __pos) const { return bitset<_Nb,_WordT>(*this) <<= __pos; } bitset<_Nb,_WordT> operator>>(size_t __pos) const { return bitset<_Nb,_WordT>(*this) >>= __pos; } // // EXTENSIONS: bit-find operations. These operations are // experimental, and are subject to change or removal in future // versions. // // find the index of the first "on" bit size_t _Find_first() const { return _M_do_find_first(_Nb); } // find the index of the next "on" bit after prev size_t _Find_next( size_t __prev ) const { return _M_do_find_next(__prev, _Nb); } }; // // Definitions of non-inline member functions. // template template void bitset<_Nb, _WordT> ::_M_copy_from_string(const basic_string<_CharT,_Traits,_Alloc>& __s, size_t __pos, size_t __n) { reset(); const size_t __nbits = min(_Nb, min(__n, __s.size() - __pos)); for (size_t __i = 0; __i < __nbits; ++__i) { switch(__s[__pos + __nbits - __i - 1]) { case '0': break; case '1': set(__i); break; default: __STL_THROW(invalid_argument("bitset")); } } } template template void bitset<_Nb, _WordT> ::_M_copy_to_string(basic_string<_CharT, _Traits, _Alloc>& __s) const { __s.assign(_Nb, '0'); for (size_t __i = 0; __i < _Nb; ++__i) if (_Unchecked_test(__i)) __s[_Nb - 1 - __i] = '1'; } // ------------------------------------------------------------ // // 23.3.5.3 bitset operations: // template inline bitset<_Nb,_WordT> operator&(const bitset<_Nb,_WordT>& __x, const bitset<_Nb,_WordT>& __y) { bitset<_Nb,_WordT> __result(__x); __result &= __y; return __result; } template inline bitset<_Nb,_WordT> operator|(const bitset<_Nb,_WordT>& __x, const bitset<_Nb,_WordT>& __y) { bitset<_Nb,_WordT> __result(__x); __result |= __y; return __result; } template inline bitset<_Nb,_WordT> operator^(const bitset<_Nb,_WordT>& __x, const bitset<_Nb,_WordT>& __y) { bitset<_Nb,_WordT> __result(__x); __result ^= __y; return __result; } // NOTE: these must be rewritten once we have templatized iostreams. template istream& operator>>(istream& __is, bitset<_Nb,_WordT>& __x) { string __tmp; __tmp.reserve(_Nb); // In new templatized iostreams, use istream::sentry if (__is.flags() & ios::skipws) { char __c; do __is.get(__c); while (__is && isspace(__c)); if (__is) __is.putback(__c); } for (size_t __i = 0; __i < _Nb; ++__i) { char __c; __is.get(__c); if (!__is) break; else if (__c != '0' && __c != '1') { __is.putback(__c); break; } else __tmp.push_back(__c); } if (__tmp.empty()) __is.clear(__is.rdstate() | ios::failbit); else __x._M_copy_from_string(__tmp, static_cast(0), _Nb); return __is; } template ostream& operator<<(ostream& __os, const bitset<_Nb,_WordT>& __x) { string __tmp; __x._M_copy_to_string(__tmp); return __os << __tmp; } // ------------------------------------------------------------ // Lookup tables for find and count operations. template unsigned char _Bit_count<__dummy>::_S_bit_count[] = { 0, /* 0 */ 1, /* 1 */ 1, /* 2 */ 2, /* 3 */ 1, /* 4 */ 2, /* 5 */ 2, /* 6 */ 3, /* 7 */ 1, /* 8 */ 2, /* 9 */ 2, /* 10 */ 3, /* 11 */ 2, /* 12 */ 3, /* 13 */ 3, /* 14 */ 4, /* 15 */ 1, /* 16 */ 2, /* 17 */ 2, /* 18 */ 3, /* 19 */ 2, /* 20 */ 3, /* 21 */ 3, /* 22 */ 4, /* 23 */ 2, /* 24 */ 3, /* 25 */ 3, /* 26 */ 4, /* 27 */ 3, /* 28 */ 4, /* 29 */ 4, /* 30 */ 5, /* 31 */ 1, /* 32 */ 2, /* 33 */ 2, /* 34 */ 3, /* 35 */ 2, /* 36 */ 3, /* 37 */ 3, /* 38 */ 4, /* 39 */ 2, /* 40 */ 3, /* 41 */ 3, /* 42 */ 4, /* 43 */ 3, /* 44 */ 4, /* 45 */ 4, /* 46 */ 5, /* 47 */ 2, /* 48 */ 3, /* 49 */ 3, /* 50 */ 4, /* 51 */ 3, /* 52 */ 4, /* 53 */ 4, /* 54 */ 5, /* 55 */ 3, /* 56 */ 4, /* 57 */ 4, /* 58 */ 5, /* 59 */ 4, /* 60 */ 5, /* 61 */ 5, /* 62 */ 6, /* 63 */ 1, /* 64 */ 2, /* 65 */ 2, /* 66 */ 3, /* 67 */ 2, /* 68 */ 3, /* 69 */ 3, /* 70 */ 4, /* 71 */ 2, /* 72 */ 3, /* 73 */ 3, /* 74 */ 4, /* 75 */ 3, /* 76 */ 4, /* 77 */ 4, /* 78 */ 5, /* 79 */ 2, /* 80 */ 3, /* 81 */ 3, /* 82 */ 4, /* 83 */ 3, /* 84 */ 4, /* 85 */ 4, /* 86 */ 5, /* 87 */ 3, /* 88 */ 4, /* 89 */ 4, /* 90 */ 5, /* 91 */ 4, /* 92 */ 5, /* 93 */ 5, /* 94 */ 6, /* 95 */ 2, /* 96 */ 3, /* 97 */ 3, /* 98 */ 4, /* 99 */ 3, /* 100 */ 4, /* 101 */ 4, /* 102 */ 5, /* 103 */ 3, /* 104 */ 4, /* 105 */ 4, /* 106 */ 5, /* 107 */ 4, /* 108 */ 5, /* 109 */ 5, /* 110 */ 6, /* 111 */ 3, /* 112 */ 4, /* 113 */ 4, /* 114 */ 5, /* 115 */ 4, /* 116 */ 5, /* 117 */ 5, /* 118 */ 6, /* 119 */ 4, /* 120 */ 5, /* 121 */ 5, /* 122 */ 6, /* 123 */ 5, /* 124 */ 6, /* 125 */ 6, /* 126 */ 7, /* 127 */ 1, /* 128 */ 2, /* 129 */ 2, /* 130 */ 3, /* 131 */ 2, /* 132 */ 3, /* 133 */ 3, /* 134 */ 4, /* 135 */ 2, /* 136 */ 3, /* 137 */ 3, /* 138 */ 4, /* 139 */ 3, /* 140 */ 4, /* 141 */ 4, /* 142 */ 5, /* 143 */ 2, /* 144 */ 3, /* 145 */ 3, /* 146 */ 4, /* 147 */ 3, /* 148 */ 4, /* 149 */ 4, /* 150 */ 5, /* 151 */ 3, /* 152 */ 4, /* 153 */ 4, /* 154 */ 5, /* 155 */ 4, /* 156 */ 5, /* 157 */ 5, /* 158 */ 6, /* 159 */ 2, /* 160 */ 3, /* 161 */ 3, /* 162 */ 4, /* 163 */ 3, /* 164 */ 4, /* 165 */ 4, /* 166 */ 5, /* 167 */ 3, /* 168 */ 4, /* 169 */ 4, /* 170 */ 5, /* 171 */ 4, /* 172 */ 5, /* 173 */ 5, /* 174 */ 6, /* 175 */ 3, /* 176 */ 4, /* 177 */ 4, /* 178 */ 5, /* 179 */ 4, /* 180 */ 5, /* 181 */ 5, /* 182 */ 6, /* 183 */ 4, /* 184 */ 5, /* 185 */ 5, /* 186 */ 6, /* 187 */ 5, /* 188 */ 6, /* 189 */ 6, /* 190 */ 7, /* 191 */ 2, /* 192 */ 3, /* 193 */ 3, /* 194 */ 4, /* 195 */ 3, /* 196 */ 4, /* 197 */ 4, /* 198 */ 5, /* 199 */ 3, /* 200 */ 4, /* 201 */ 4, /* 202 */ 5, /* 203 */ 4, /* 204 */ 5, /* 205 */ 5, /* 206 */ 6, /* 207 */ 3, /* 208 */ 4, /* 209 */ 4, /* 210 */ 5, /* 211 */ 4, /* 212 */ 5, /* 213 */ 5, /* 214 */ 6, /* 215 */ 4, /* 216 */ 5, /* 217 */ 5, /* 218 */ 6, /* 219 */ 5, /* 220 */ 6, /* 221 */ 6, /* 222 */ 7, /* 223 */ 3, /* 224 */ 4, /* 225 */ 4, /* 226 */ 5, /* 227 */ 4, /* 228 */ 5, /* 229 */ 5, /* 230 */ 6, /* 231 */ 4, /* 232 */ 5, /* 233 */ 5, /* 234 */ 6, /* 235 */ 5, /* 236 */ 6, /* 237 */ 6, /* 238 */ 7, /* 239 */ 4, /* 240 */ 5, /* 241 */ 5, /* 242 */ 6, /* 243 */ 5, /* 244 */ 6, /* 245 */ 6, /* 246 */ 7, /* 247 */ 5, /* 248 */ 6, /* 249 */ 6, /* 250 */ 7, /* 251 */ 6, /* 252 */ 7, /* 253 */ 7, /* 254 */ 8 /* 255 */ }; // end _Bit_count template unsigned char _First_one<__dummy>::_S_first_one[] = { 0, /* 0 */ 0, /* 1 */ 1, /* 2 */ 0, /* 3 */ 2, /* 4 */ 0, /* 5 */ 1, /* 6 */ 0, /* 7 */ 3, /* 8 */ 0, /* 9 */ 1, /* 10 */ 0, /* 11 */ 2, /* 12 */ 0, /* 13 */ 1, /* 14 */ 0, /* 15 */ 4, /* 16 */ 0, /* 17 */ 1, /* 18 */ 0, /* 19 */ 2, /* 20 */ 0, /* 21 */ 1, /* 22 */ 0, /* 23 */ 3, /* 24 */ 0, /* 25 */ 1, /* 26 */ 0, /* 27 */ 2, /* 28 */ 0, /* 29 */ 1, /* 30 */ 0, /* 31 */ 5, /* 32 */ 0, /* 33 */ 1, /* 34 */ 0, /* 35 */ 2, /* 36 */ 0, /* 37 */ 1, /* 38 */ 0, /* 39 */ 3, /* 40 */ 0, /* 41 */ 1, /* 42 */ 0, /* 43 */ 2, /* 44 */ 0, /* 45 */ 1, /* 46 */ 0, /* 47 */ 4, /* 48 */ 0, /* 49 */ 1, /* 50 */ 0, /* 51 */ 2, /* 52 */ 0, /* 53 */ 1, /* 54 */ 0, /* 55 */ 3, /* 56 */ 0, /* 57 */ 1, /* 58 */ 0, /* 59 */ 2, /* 60 */ 0, /* 61 */ 1, /* 62 */ 0, /* 63 */ 6, /* 64 */ 0, /* 65 */ 1, /* 66 */ 0, /* 67 */ 2, /* 68 */ 0, /* 69 */ 1, /* 70 */ 0, /* 71 */ 3, /* 72 */ 0, /* 73 */ 1, /* 74 */ 0, /* 75 */ 2, /* 76 */ 0, /* 77 */ 1, /* 78 */ 0, /* 79 */ 4, /* 80 */ 0, /* 81 */ 1, /* 82 */ 0, /* 83 */ 2, /* 84 */ 0, /* 85 */ 1, /* 86 */ 0, /* 87 */ 3, /* 88 */ 0, /* 89 */ 1, /* 90 */ 0, /* 91 */ 2, /* 92 */ 0, /* 93 */ 1, /* 94 */ 0, /* 95 */ 5, /* 96 */ 0, /* 97 */ 1, /* 98 */ 0, /* 99 */ 2, /* 100 */ 0, /* 101 */ 1, /* 102 */ 0, /* 103 */ 3, /* 104 */ 0, /* 105 */ 1, /* 106 */ 0, /* 107 */ 2, /* 108 */ 0, /* 109 */ 1, /* 110 */ 0, /* 111 */ 4, /* 112 */ 0, /* 113 */ 1, /* 114 */ 0, /* 115 */ 2, /* 116 */ 0, /* 117 */ 1, /* 118 */ 0, /* 119 */ 3, /* 120 */ 0, /* 121 */ 1, /* 122 */ 0, /* 123 */ 2, /* 124 */ 0, /* 125 */ 1, /* 126 */ 0, /* 127 */ 7, /* 128 */ 0, /* 129 */ 1, /* 130 */ 0, /* 131 */ 2, /* 132 */ 0, /* 133 */ 1, /* 134 */ 0, /* 135 */ 3, /* 136 */ 0, /* 137 */ 1, /* 138 */ 0, /* 139 */ 2, /* 140 */ 0, /* 141 */ 1, /* 142 */ 0, /* 143 */ 4, /* 144 */ 0, /* 145 */ 1, /* 146 */ 0, /* 147 */ 2, /* 148 */ 0, /* 149 */ 1, /* 150 */ 0, /* 151 */ 3, /* 152 */ 0, /* 153 */ 1, /* 154 */ 0, /* 155 */ 2, /* 156 */ 0, /* 157 */ 1, /* 158 */ 0, /* 159 */ 5, /* 160 */ 0, /* 161 */ 1, /* 162 */ 0, /* 163 */ 2, /* 164 */ 0, /* 165 */ 1, /* 166 */ 0, /* 167 */ 3, /* 168 */ 0, /* 169 */ 1, /* 170 */ 0, /* 171 */ 2, /* 172 */ 0, /* 173 */ 1, /* 174 */ 0, /* 175 */ 4, /* 176 */ 0, /* 177 */ 1, /* 178 */ 0, /* 179 */ 2, /* 180 */ 0, /* 181 */ 1, /* 182 */ 0, /* 183 */ 3, /* 184 */ 0, /* 185 */ 1, /* 186 */ 0, /* 187 */ 2, /* 188 */ 0, /* 189 */ 1, /* 190 */ 0, /* 191 */ 6, /* 192 */ 0, /* 193 */ 1, /* 194 */ 0, /* 195 */ 2, /* 196 */ 0, /* 197 */ 1, /* 198 */ 0, /* 199 */ 3, /* 200 */ 0, /* 201 */ 1, /* 202 */ 0, /* 203 */ 2, /* 204 */ 0, /* 205 */ 1, /* 206 */ 0, /* 207 */ 4, /* 208 */ 0, /* 209 */ 1, /* 210 */ 0, /* 211 */ 2, /* 212 */ 0, /* 213 */ 1, /* 214 */ 0, /* 215 */ 3, /* 216 */ 0, /* 217 */ 1, /* 218 */ 0, /* 219 */ 2, /* 220 */ 0, /* 221 */ 1, /* 222 */ 0, /* 223 */ 5, /* 224 */ 0, /* 225 */ 1, /* 226 */ 0, /* 227 */ 2, /* 228 */ 0, /* 229 */ 1, /* 230 */ 0, /* 231 */ 3, /* 232 */ 0, /* 233 */ 1, /* 234 */ 0, /* 235 */ 2, /* 236 */ 0, /* 237 */ 1, /* 238 */ 0, /* 239 */ 4, /* 240 */ 0, /* 241 */ 1, /* 242 */ 0, /* 243 */ 2, /* 244 */ 0, /* 245 */ 1, /* 246 */ 0, /* 247 */ 3, /* 248 */ 0, /* 249 */ 1, /* 250 */ 0, /* 251 */ 2, /* 252 */ 0, /* 253 */ 1, /* 254 */ 0, /* 255 */ }; // end _First_one #if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32) #pragma reset woff 1209 #endif __STL_END_NAMESPACE #undef __BITS_PER_WORDT #undef __BITSET_WORDS #endif /* __SGI_STL_BITSET */ // Local Variables: // mode:C++ // End: