From 9f6733fcc802d3b0a3f64ff5f2745c83534d68ad Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Mon, 25 Mar 2002 14:21:30 +0000 Subject: Initial revision git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4 a1c6a512-1295-4272-9138-f99709370657 --- uisimulator/yarandom.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 uisimulator/yarandom.h (limited to 'uisimulator/yarandom.h') diff --git a/uisimulator/yarandom.h b/uisimulator/yarandom.h new file mode 100644 index 0000000000..0e1dfcfb76 --- /dev/null +++ b/uisimulator/yarandom.h @@ -0,0 +1,64 @@ +/* xscreensaver, Copyright (c) 1997, 1998 by Jamie Zawinski + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation. No representations are made about the suitability of this + * software for any purpose. It is provided "as is" without express or + * implied warranty. + */ + +#ifndef __YARANDOM_H__ +#define __YARANDOM_H__ + +#undef random +#undef rand +#undef drand48 +#undef srandom +#undef srand +#undef srand48 +#undef frand +#undef RAND_MAX + +#ifdef VMS +# include "vms-gtod.h" +#endif + +extern unsigned int ya_random (void); +extern void ya_rand_init (unsigned int); + +#define random() ya_random() +#define RAND_MAX 0x7FFFFFFF + +/*#define srandom(i) ya_rand_init(0)*/ + +/* Define these away to keep people from using the wrong APIs in xscreensaver. + */ +#define rand __ERROR_use_random_not_rand_in_xscreensaver__ +#define drand48 __ERROR_use_random_not_drand48_in_xscreensaver__ +#define srandom __ERROR_do_not_call_srandom_in_xscreensaver__ +#define srand __ERROR_do_not_call_srand_in_xscreensaver__ +#define srand48 __ERROR_do_not_call_srand48_in_xscreensaver__ +#define ya_rand_init __ERROR_do_not_call_ya_rand_init_in_xscreensaver__ + + +#if defined (__GNUC__) && (__GNUC__ >= 2) + /* Implement frand using GCC's statement-expression extension. */ + +# define frand(f) \ + ({ double tmp = (((double) random()) / \ + (((double) ((unsigned int)~0)) / ((double) (f)))); \ + tmp < 0 ? (-tmp) : tmp; }) + +#else /* not GCC2 - implement frand using a global variable.*/ + +static double _frand_tmp_; +# define frand(f) \ + (_frand_tmp_ = (((double) random()) / \ + (((double) ((unsigned int)~0)) / ((double) (f)))), \ + _frand_tmp_ < 0 ? (-_frand_tmp_) : _frand_tmp_) + +#endif /* not GCC2 */ + +#endif /* __YARANDOM_H__ */ -- cgit v1.2.3