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78 lines
2.8 KiB
78 lines
2.8 KiB
/***************************************************************************
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*
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* _random.cc - member function definitions for template class
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* __rw_random_generator
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*
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* $Id: _random.cc 172106 2011-11-02 17:04:12Z statham $
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*
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***************************************************************************
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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***************************************************************************
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*
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* Copyright (c) 1994-2001 Rogue Wave Software, Inc. All Rights Reserved.
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*
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* This computer software is owned by Rogue Wave Software, Inc. and is
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* protected by U.S. copyright laws and other laws and by international
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* treaties. This computer software is furnished by Rogue Wave Software,
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* Inc. pursuant to a written license agreement and may be used, copied,
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* transmitted, and stored only in accordance with the terms of such
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* license and with the inclusion of the above copyright notice. This
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* computer software or any other copies thereof may not be provided or
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* otherwise made available to any other person.
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*
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* U.S. Government Restricted Rights. This computer software is provided
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* with Restricted Rights. Use, duplication, or disclosure by the
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* Government is subject to restrictions as set forth in subparagraph (c)
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* (1) (ii) of The Rights in Technical Data and Computer Software clause
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* at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
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* Commercial Computer Software--Restricted Rights at 48 CFR 52.227-19,
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* as applicable. Manufacturer is Rogue Wave Software, Inc., 5500
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* Flatiron Parkway, Boulder, Colorado 80301 USA.
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*
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**************************************************************************/
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_RWSTD_NAMESPACE_BEGIN (__rw)
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template <unsigned _SIZE>
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void __rw_random_generator<_SIZE>::seed (unsigned long __seed)
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{
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unsigned long __k = 1;
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_C_table [_C_SIZE - 1] = __seed;
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_RWSTD_C::size_t __i;
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for (__i = 0; __i != _C_SIZE - 1; ++__i) {
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_RWSTD_C::size_t __ii = 21 * __i % _C_SIZE;
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_C_table [__ii] = __k;
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__k = __seed - __k;
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__seed = _C_table [__ii];
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}
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for (__i = 0; __i != 4; ++__i) {
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for (_RWSTD_C::size_t __ii = 0; __ii != _C_SIZE; ++__ii)
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_C_table [__i] =
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_C_table [__i] - _C_table [(__i + 31) % _C_SIZE];
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}
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_C_index1 = 0U;
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_C_index2 = _C_SIZE * 2UL / 3UL - 1UL;
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}
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_RWSTD_NAMESPACE_END // __rw
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