text: /***********************************************************************
  	Copyright (c) 2017, The OpenBRAS project authors. All rights reserved.
  
  	Redistribution and use in source and binary forms, with or without
  	modification, are permitted provided that the following conditions are
  	met:
  
  	  * Redistributions of source code must retain the above copyright
  		notice, this list of conditions and the following disclaimer.
  
  	  * Redistributions in binary form must reproduce the above copyright
  		notice, this list of conditions and the following disclaimer in
  		the documentation and/or other materials provided with the
  		distribution.
  
  	  * Neither the name of OpenBRAS nor the names of its contributors may
  		be used to endorse or promote products derived from this software
  		without specific prior written permission.
  
  	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  	HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  	LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  	OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  **********************************************************************/
  
  /*
   * Copyright (c) 2017 The OpenBras project authors. All Rights Reserved.
  */
  
  #include "random.h"
  
  void
  magic_init()
  {
      long seed;
      struct timeval t;
  
      gettimeofday(&t, NULL);
      seed = t.tv_sec ^ t.tv_usec;
      srand48(seed);
  }
  
  /*
   * magic - Returns the next magic number.
   */
  uint32_t
  magic()
  {
      return (uint32_t) mrand48();
  }
  
  /*
   * random_bytes - Fill a buffer with random bytes.
   */
  void
  random_bytes(unsigned char *buf, int len)
  {
      int i;
  
      for (i = 0; i < len; ++i)
          buf[i] = mrand48() >> 24;
  }
  
  double
  drand48()
  {
      return (double)rand() / (double)0x7fffffffL; /* 2**31-1 */
  }
  
  long
  mrand48()
  {
      return rand();
  }
  
  void
  srand48(long seedval)
  {
      srand((int)seedval);
  }
  
  
  