mirror of https://github.com/CGAL/cgal
68 lines
2.2 KiB
Plaintext
68 lines
2.2 KiB
Plaintext
/*
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* Copyright (c) 1998
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* Silicon Graphics Computer Systems, Inc.
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*
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* Copyright (c) 1999
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* Boris Fomitchev
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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#ifndef __SGI_STL_BITSET
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#define __SGI_STL_BITSET
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// This implementation of bitset<> has a second template parameter,
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// _WordT, which defaults to unsigned long. *YOU SHOULD NOT USE
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// THIS FEATURE*. It is experimental, and it may be removed in
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// future releases.
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// A bitset of size N, using words of type _WordT, will have
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// N % (sizeof(_WordT) * CHAR_BIT) unused bits. (They are the high-
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// order bits in the highest word.) It is a class invariant
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// of class bitset<> that those unused bits are always zero.
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// Most of the actual code isn't contained in bitset<> itself, but in the
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// base class _Base_bitset. The base class works with whole words, not with
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// individual bits. This allows us to specialize _Base_bitset for the
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// important special case where the bitset is only a single word.
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// The C++ standard does not define the precise semantics of operator[].
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// In this implementation the const version of operator[] is equivalent
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// to test(), except that it does no range checking. The non-const version
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// returns a reference to a bit, again without doing any range checking.
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# include <stl_bitset.h>
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#if defined (__STL_WHOLE_NATIVE_STD)
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# if defined ( __STL_REDEFINE_STD ) && defined (std)
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# undef std
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# define __STL_RESUME_STD_FOR_BITSET
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# define __STLPORT_NATIVE_PASS
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# endif
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# include __STL_NATIVE_HEADER(bitset)
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# if defined ( __STL_RESUME_STD_FOR_BITSET )
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# undef __STL_RESUME_STD_FOR_BITSET
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# define std __STLPORT_NAMESPACE
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# undef __STLPORT_NATIVE_PASS
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# endif
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#endif
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#endif /* __SGI_STL_BITSET */
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// Local Variables:
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// mode:C++
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// End:
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