lib/libc/stdlib/srand48.c

   1 /*      $NetBSD: srand48.c,v 1.7 2005/06/12 05:21:28 lukem Exp $        */
   2
   3 /*
   4  * Copyright (c) 1993 Martin Birgmeier
   5  * All rights reserved.
   6  *
   7  * You may redistribute unmodified or modified versions of this source
   8  * code provided that the above copyright notice and this and the
   9  * following conditions are retained.
  10  *
  11  * This software is provided ``as is'', and comes with no warranties
  12  * of any kind. I shall in no event be liable for anything that happens
  13  * to anyone/anything when using this software.
  14  */
  15
  16 #include <sys/cdefs.h>
  17 #if defined(LIBC_SCCS) && !defined(lint)
  18 __RCSID("$NetBSD: srand48.c,v 1.7 2005/06/12 05:21:28 lukem Exp $");
  19 #endif /* LIBC_SCCS and not lint */
  20
  21 #include "namespace.h"
  22 #include "rand48.h"
  23
  24 #ifdef __weak_alias
  25 __weak_alias(srand48,_srand48)
  26 #endif
  27
  28 void
  29 srand48(long seed)
  30 {
  31         __rand48_seed[0] = RAND48_SEED_0;
  32         __rand48_seed[1] = (unsigned short) seed;
  33         __rand48_seed[2] = (unsigned short) ((unsigned long)seed >> 16);
  34         __rand48_mult[0] = RAND48_MULT_0;
  35         __rand48_mult[1] = RAND48_MULT_1;
  36         __rand48_mult[2] = RAND48_MULT_2;
  37         __rand48_add = RAND48_ADD;
  38 }