1 /* $OpenBSD: seed48.c,v 1.6 2015年09月13日 15:20:40 guenther Exp $ */ 2 /* 3 * Copyright (c) 1993 Martin Birgmeier 4 * All rights reserved. 5 * 6 * You may redistribute unmodified or modified versions of this source 7 * code provided that the above copyright notice and this and the 8 * following conditions are retained. 9 * 10 * This software is provided ``as is'', and comes with no warranties 11 * of any kind. I shall in no event be liable for anything that happens 12 * to anyone/anything when using this software. 13 */ 14 15#include "rand48.h" 16 17 unsigned short * 18 seed48(unsigned short xseed[3]) 19{ 20 unsigned short *res; 21 22 res = seed48_deterministic(xseed); 23 __rand48_deterministic = 0; 24 return res; 25} 26 27 unsigned short * 28 seed48_deterministic(unsigned short xseed[3]) 29{ 30 static unsigned short sseed[3]; 31 32 __rand48_deterministic = 1; 33 sseed[0] = __rand48_seed[0]; 34 sseed[1] = __rand48_seed[1]; 35 sseed[2] = __rand48_seed[2]; 36 __rand48_seed[0] = xseed[0]; 37 __rand48_seed[1] = xseed[1]; 38 __rand48_seed[2] = xseed[2]; 39 __rand48_mult[0] = RAND48_MULT_0; 40 __rand48_mult[1] = RAND48_MULT_1; 41 __rand48_mult[2] = RAND48_MULT_2; 42 __rand48_add = RAND48_ADD; 43 return sseed; 44} 45 DEF_WEAK(seed48_deterministic); 46