lib/3rdparty/stlport/test/eh/random_number.cpp

   1 /***********************************************************************************
   2   random_number.cpp
   3
   4  * Copyright (c) 1997
   5  * Mark of the Unicorn, Inc.
   6  *
   7  * Permission to use, copy, modify, distribute and sell this software
   8  * and its documentation for any purpose is hereby granted without fee,
   9  * provided that the above copyright notice appear in all copies and
  10  * that both that copyright notice and this permission notice appear
  11  * in supporting documentation.  Mark of the Unicorn makes no
  12  * representations about the suitability of this software for any
  13  * purpose.  It is provided "as is" without express or implied warranty.
  14
  15 ***********************************************************************************/
  16 #include "random_number.h"
  17 #include "Prefix.h"
  18 #if defined (EH_NEW_HEADERS)
  19 # include <functional>
  20 # include <cstdlib>
  21 #else
  22 # include <function.h>
  23 # include <stdlib.h>
  24 #endif
  25
  26 unsigned random_number( size_t range )
  27 {
  28 #if !defined( __SGI_STL )
  29   if (range == 0) return 0;
  30   return (unsigned)(EH_STD::rand() + EH_STD::rand()) % range;
  31 #else
  32   static EH_STD::subtractive_rng rnd;
  33         if (range==0) return 0;
  34         return rnd(range);
  35 #endif
  36 }
  37
  38 // default base for random container sizes
  39 unsigned random_base = 1000;