sl@0: /***********************************************************************************
sl@0:   random_number.cpp
sl@0: 
sl@0:  * Copyright (c) 1997
sl@0:  * Mark of the Unicorn, Inc.
sl@0:  *
sl@0:  * Permission to use, copy, modify, distribute and sell this software
sl@0:  * and its documentation for any purpose is hereby granted without fee,
sl@0:  * provided that the above copyright notice appear in all copies and
sl@0:  * that both that copyright notice and this permission notice appear
sl@0:  * in supporting documentation.  Mark of the Unicorn makes no
sl@0:  * representations about the suitability of this software for any
sl@0:  * purpose.  It is provided "as is" without express or implied warranty.
sl@0: 
sl@0: ***********************************************************************************/
sl@0: #include "random_number.h"
sl@0: #include "Prefix.h"
sl@0: #if defined (EH_NEW_HEADERS)
sl@0: # include <functional>
sl@0: # include <cstdlib>
sl@0: #else
sl@0: # include <function.h>
sl@0: # include <stdlib.h>
sl@0: #endif
sl@0: 
sl@0: unsigned random_number( size_t range )
sl@0: {
sl@0: #if !defined( __SGI_STL )
sl@0:   if (range == 0) return 0;
sl@0:   return (unsigned)(EH_STD::rand() + EH_STD::rand()) % range;
sl@0: #else
sl@0:   static EH_STD::subtractive_rng rnd;
sl@0:         if (range==0) return 0;
sl@0:         return rnd(range);
sl@0: #endif
sl@0: }
sl@0: 
sl@0: // default base for random container sizes
sl@0: unsigned random_base = 1000;