From fd733201b82f39655488a286c89142f321ef9dc9 Mon Sep 17 00:00:00 2001 From: Sylvain Chiron Date: Sat, 1 Jul 2017 13:36:41 +0200 Subject: Updated libs from the Adaptagrams project: libavoid, libcola and libvspc; changed the code to match the new API Signed-off-by: Sylvain Chiron --- src/libcola/pseudorandom.cpp | 48 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/libcola/pseudorandom.cpp (limited to 'src/libcola/pseudorandom.cpp') diff --git a/src/libcola/pseudorandom.cpp b/src/libcola/pseudorandom.cpp new file mode 100644 index 000000000..6577b3a05 --- /dev/null +++ b/src/libcola/pseudorandom.cpp @@ -0,0 +1,48 @@ +/* + * vim: ts=4 sw=4 et tw=0 wm=0 + * + * libcola - A library providing force-directed network layout using the + * stress-majorization method subject to separation constraints. + * + * Copyright (C) 2015 Monash University + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * See the file LICENSE.LGPL distributed with the library. + * + * 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. + * + * Author(s): Tim Dwyer +*/ + +#include "libcola/pseudorandom.h" + +namespace cola { + +PseudoRandom::PseudoRandom(double s) + : a(214013), + c(2531011), + m(2147483648), + range(32767), + seed(s) +{ +} + +double PseudoRandom::getNext(void) +{ + seed = (seed * a + c) % m; + return (seed >> 16) / range; +} + +double PseudoRandom::getNextBetween(double min, double max) +{ + return min + getNext() * (max - min); +} + + +} + -- cgit v1.2.3