54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* Copyright (C) 1995, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stdlib.h>
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#include <string.h>
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int
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seed48_r (seed16v, buffer)
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unsigned short int seed16v[3];
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struct drand48_data *buffer;
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{
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/* Save old value at a private place to be used as return value. */
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memcpy (buffer->old_X, buffer->X, sizeof (buffer->X));
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/* Install new state. */
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#if USHRT_MAX == 0xffffU
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buffer->X[2] = seed16v[2];
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buffer->X[1] = seed16v[1];
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buffer->X[0] = seed16v[0];
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buffer->a[2] = 0x5;
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buffer->a[1] = 0xdeec;
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buffer->a[0] = 0xe66d;
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#else
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buffer->X[2] = (seed16v[2] << 16) | seed16v[1];
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buffer->X[1] = seed16v[0] << 16;
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buffer->X[0] = 0;
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buffer->a[2] = 0x5deecUL;
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buffer->a[1] = 0xe66d0000UL;
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buffer->a[0] = 0;
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#endif
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buffer->c = 0xb;
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buffer->init = 1;
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return 0;
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}
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