minix/lib/nbsd_libc/stdlib/seed48.c

50 lines
1.2 KiB
C
Raw Normal View History

/* $NetBSD: seed48.c,v 1.8 2005/06/12 05:21:28 lukem Exp $ */
/*
* Copyright (c) 1993 Martin Birgmeier
* All rights reserved.
*
* You may redistribute unmodified or modified versions of this source
* code provided that the above copyright notice and this and the
* following conditions are retained.
*
* This software is provided ``as is'', and comes with no warranties
* of any kind. I shall in no event be liable for anything that happens
* to anyone/anything when using this software.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: seed48.c,v 1.8 2005/06/12 05:21:28 lukem Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <assert.h>
#include "rand48.h"
#ifdef __weak_alias
__weak_alias(seed48,_seed48)
#endif
unsigned short *
seed48(unsigned short xseed[3])
{
static unsigned short sseed[3];
_DIAGASSERT(xseed != NULL);
sseed[0] = __rand48_seed[0];
sseed[1] = __rand48_seed[1];
sseed[2] = __rand48_seed[2];
__rand48_seed[0] = xseed[0];
__rand48_seed[1] = xseed[1];
__rand48_seed[2] = xseed[2];
__rand48_mult[0] = RAND48_MULT_0;
__rand48_mult[1] = RAND48_MULT_1;
__rand48_mult[2] = RAND48_MULT_2;
__rand48_add = RAND48_ADD;
return sseed;
}