X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fstable%2Fsrc%2Fsynfig%2Fquick_rng.h;fp=synfig-core%2Ftags%2Fstable%2Fsrc%2Fsynfig%2Fquick_rng.h;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=9f63556f8c61055eec5a736def2b89728d28d406;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/stable/src/synfig/quick_rng.h b/synfig-core/tags/stable/src/synfig/quick_rng.h deleted file mode 100644 index 9f63556..0000000 --- a/synfig-core/tags/stable/src/synfig/quick_rng.h +++ /dev/null @@ -1,85 +0,0 @@ -/* === S Y N F I G ========================================================= */ -/*! \file quick_rng.h -** \brief Template Header -** -** $Id: guid.h 335 2007-03-16 00:39:09Z dooglus $ -** -** \legal -** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley -** Copyright (c) 2007 Chris Moore -** -** This package is free software; you can redistribute it and/or -** modify it under the terms of the GNU General Public License as -** published by the Free Software Foundation; either version 2 of -** the License, or (at your option) any later version. -** -** This package 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 -** General Public License for more details. -** \endlegal -*/ -/* ========================================================================= */ - -/* === S T A R T =========================================================== */ - -#ifndef __SYNFIG_QUICK_RNG_H -#define __SYNFIG_QUICK_RNG_H - -/* === H E A D E R S ======================================================= */ - -#include - -/* === M A C R O S ========================================================= */ - -/* === T Y P E D E F S ===================================================== */ - -/* === C L A S S E S & S T R U C T S ======================================= */ - -// A fast 32-bit linear congruential random number generator -class quick_rng -{ - uint32_t next; -public: - quick_rng(uint32_t seed=0):next(seed) { } - - void set_seed(uint32_t x) - { - next=x; - } - - uint32_t i32() - { - static const uint32_t a(1664525); - static const uint32_t c(1013904223); - - return next=next*a+c; - } - - uint32_t i16() - { - return i32()>>16; - } - - float f() - { - static const float m(int(65535)); - - return float(i16())/m; - } - - uint32_t operator()(const uint32_t& m) - { - if(m==65536) - return i16(); - else - if(m<=65536) - return i16()%m; - else - return i32()%m; - } -}; - -/* === E N D =============================================================== */ - -#endif