/** * \file sg_random.h * Routines to handle random number generation and hide platform differences. */ // Written by Curtis Olson, started July 1997. // // Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the // Free Software Foundation, Inc., 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. // // $Id: sg_random.h,v 1.3 2001/03/25 01:42:41 curt Exp $ #ifndef _SG_RANDOM_H #define _SG_RANDOM_H #ifdef __cplusplus extern "C" { #endif /** * Seed the random number generater with time() so we don't see the * same sequence every time. */ void sg_srandom_time(); /** * Seed the random number generater with your own seed so can set up * repeatable randomization. * @param seed random number generator seed */ void sg_srandom( unsigned int seed ); /** * Return a random number between [0.0, 1.0) * @return next "random" number in the "random" sequence */ double sg_random(); #ifdef __cplusplus } #endif #endif // _SG_RANDOM_H