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// From http://baagoe.com/en/RandomMusings/javascript/
function Alea() {
return (function(args) {
// Johannes Baagøe <baagoe@baagoe.com>, 2010
var s0 = 0;
var s1 = 0;
var s2 = 0;
var c = 1;
if (args.length == 0) {
args = [+new Date];
}
var mash = Mash();
s0 = mash(' ');
s1 = mash(' ');
s2 = mash(' ');
for (var i = 0; i < args.length; i++) {
s0 -= mash(args[i]);
if (s0 < 0) {
s0 += 1;
}
s1 -= mash(args[i]);
if (s1 < 0) {
s1 += 1;
}
s2 -= mash(args[i]);
if (s2 < 0) {
s2 += 1;
}
}
mash = null;
var random = function() {
var t = 2091639 * s0 + c * 2.3283064365386963e-10; // 2^-32
s0 = s1;
s1 = s2;
return s2 = t - (c = t | 0);
};
random.uint32 = function() {
return random() * 0x100000000; // 2^32
};
random.fract53 = function() {
return random() +
(random() * 0x200000 | 0) * 1.1102230246251565e-16; // 2^-53
};
random.version = 'Alea 0.9';
random.args = args;
return random;
} (Array.prototype.slice.call(arguments)));
};
// From http://baagoe.com/en/RandomMusings/javascript/
function KISS07() {
return (function(args) {
// George Marsaglia, 2007-06-23
//http://groups.google.com/group/comp.lang.fortran/msg/6edb8ad6ec5421a5
var x = 123456789;
var y = 362436069;
var z = 21288629;
var w = 14921776;
var c = 0;
if (args.length == 0) {
args = [+new Date];
}
var mash = Mash();
for (var i = 0; i < args.length; i++) {
x ^= mash(args[i]) * 0x100000000; // 2^32
y ^= mash(args[i]) * 0x100000000;
z ^= mash(args[i]) * 0x100000000;
w ^= mash(args[i]) * 0x100000000;
}
if (y === 0) {
y = 1;
}
c ^= z >>> 31;
z &= 0x7fffffff;
if ((z % 7559) === 0) {
z++;
}
w &= 0x7fffffff;
if ((w % 7559) === 0) {
w++;
}
mash = null;
var uint32 = function() {
var t;
x += 545925293;
x >>>= 0;
y ^= y << 13;
y ^= y >>> 17;
y ^= y << 5;
t = z + w + c;
z = w;
c = t >>> 31;
w = t & 0x7fffffff;
return x + y + w >>> 0;
};
var random = function() {
return uint32() * 2.3283064365386963e-10; // 2^-32
};
random.uint32 = uint32;
random.fract53 = function() {
return random() +
(uint32() & 0x1fffff) * 1.1102230246251565e-16; // 2^-53
};
random.args = args;
random.version = 'KISS07 0.9';
return random;
} (Array.prototype.slice.call(arguments)));
};
// From http://baagoe.com/en/RandomMusings/javascript/
function Kybos() {
return (function(args) {
// Johannes Baagøe <baagoe@baagoe.com>, 2010
var s0 = 0;
var s1 = 0;
var s2 = 0;
var c = 1;
var s = [];
var k = 0;
var mash = Mash();
var s0 = mash(' ');
var s1 = mash(' ');
var s2 = mash(' ');
for (var j = 0; j < 8; j++) {
s[j] = mash(' ');
}
if (args.length == 0) {
args = [+new Date];
}
for (var i = 0; i < args.length; i++) {
s0 -= mash(args[i]);
if (s0 < 0) {
s0 += 1;
}
s1 -= mash(args[i]);
if (s1 < 0) {
s1 += 1;
}
s2 -= mash(args[i]);
if (s2 < 0) {
s2 += 1;
}
for (var j = 0; j < 8; j++) {
s[j] -= mash(args[i]);
if (s[j] < 0) {
s[j] += 1;
}
}
}
var random = function() {
var a = 2091639;
k = s[k] * 8 | 0;
var r = s[k];
var t = a * s0 + c * 2.3283064365386963e-10; // 2^-32
s0 = s1;
s1 = s2;
s2 = t - (c = t | 0);
s[k] -= s2;
if (s[k] < 0) {
s[k] += 1;
}
return r;
};
random.uint32 = function() {
return random() * 0x100000000; // 2^32
};
random.fract53 = function() {
return random() +
(random() * 0x200000 | 0) * 1.1102230246251565e-16; // 2^-53
};
random.addNoise = function() {
for (var i = arguments.length - 1; i >= 0; i--) {
for (j = 0; j < 8; j++) {
s[j] -= mash(arguments[i]);
if (s[j] < 0) {
s[j] += 1;
}
}
}
};
random.version = 'Kybos 0.9';
random.args = args;
return random;
} (Array.prototype.slice.call(arguments)));
};
// From http://baagoe.com/en/RandomMusings/javascript/
function LFib() {
return (function(args) {
// Johannes Baagøe <baagoe@baagoe.com>, 2010
var k0 = 255,
k1 = 52,
k2 = 0;
var s = [];
var mash = Mash();
if (args.length === 0) {
args = [+new Date()];
}
for (var j = 0; j < 256; j++) {
s[j] = mash(' ');
s[j] -= mash(' ') * 4.76837158203125e-7; // 2^-21
if (s[j] < 0) {
s[j] += 1;
}
}
for (var i = 0; i < args.length; i++) {
for (var j = 0; j < 256; j++) {
s[j] -= mash(args[i]);
s[j] -= mash(args[i]) * 4.76837158203125e-7; // 2^-21
if (s[j] < 0) {
s[j] += 1;
}
}
}
mash = null;
var random = function() {
k0 = (k0 + 1) & 255;
k1 = (k1 + 1) & 255;
k2 = (k2 + 1) & 255;
var x = s[k0] - s[k1];
if (x < 0.0) {
x += 1.0;
}
x -= s[k2];
if (x < 0.0) {
x += 1.0;
}
return s[k0] = x;
}
random.uint32 = function() {
return random() * 0x100000000 >>> 0; // 2^32
};
random.fract53 = random;
random.version = 'LFib 0.9';
random.args = args;
return random;
} (Array.prototype.slice.call(arguments)));
};
// From http://baagoe.com/en/RandomMusings/javascript/
function LFIB4() {
return(function(args) {
// George Marsaglia's LFIB4,
//http://groups.google.com/group/sci.crypt/msg/eb4ddde782b17051
var k0 = 0,
k1 = 58,
k2 = 119,
k3 = 178;
var s = [];
var mash = Mash();
if (args.length === 0) {
args = [+new Date()];
}
for (var j = 0; j < 256; j++) {
s[j] = mash(' ');
s[j] -= mash(' ') * 4.76837158203125e-7; // 2^-21
if (s[j] < 0) {
s[j] += 1;
}
}
for (var i = 0; i < args.length; i++) {
for (var j = 0; j < 256; j++) {
s[j] -= mash(args[i]);
s[j] -= mash(args[i]) * 4.76837158203125e-7; // 2^-21
if (s[j] < 0) {
s[j] += 1;
}
}
}
mash = null;
var random = function() {
var x;
k0 = (k0 + 1) & 255;
k1 = (k1 + 1) & 255;
k2 = (k2 + 1) & 255;
k3 = (k3 + 1) & 255;
x = s[k0] - s[k1];
if (x < 0) {
x += 1;
}
x -= s[k2];
if (x < 0) {
x += 1;
}
x -= s[k3];
if (x < 0) {
x += 1;
}
return s[k0] = x;
}
random.uint32 = function() {
return random() * 0x100000000 >>> 0; // 2^32
};
random.fract53 = random;
random.version = 'LFIB4 0.9';
random.args = args;
return random;
} (Array.prototype.slice.call(arguments)));
};
// From http://baagoe.com/en/RandomMusings/javascript/
// Johannes Baagøe <baagoe@baagoe.com>, 2010
function Mash() {
var n = 0xefc8249d;
var mash = function(data) {
data = data.toString();
for (var i = 0; i < data.length; i++) {
n += data.charCodeAt(i);
var h = 0.02519603282416938 * n;
n = h >>> 0;
h -= n;
h *= n;
n = h >>> 0;
h -= n;
n += h * 0x100000000; // 2^32
}
return (n >>> 0) * 2.3283064365386963e-10; // 2^-32
};
mash.version = 'Mash 0.9';
return mash;
}
// From http://baagoe.com/en/RandomMusings/javascript/
function MRG32k3a() {
return (function(args) {
// Copyright (c) 1998, 2002 Pierre L'Ecuyer, DIRO, Université de Montréal.
// http://www.iro.umontreal.ca/~lecuyer/
var m1 = 4294967087;
var m2 = 4294944443;
var s10 = 12345,
s11 = 12345,
s12 = 123,
s20 = 12345,
s21 = 12345,
s22 = 123;
if (args.length === 0) {
args = [+new Date()];
}
var mash = Mash();
for (var i = 0; i < args.length; i++) {
s10 += mash(args[i]) * 0x100000000; // 2 ^ 32
s11 += mash(args[i]) * 0x100000000;
s12 += mash(args[i]) * 0x100000000;
s20 += mash(args[i]) * 0x100000000;
s21 += mash(args[i]) * 0x100000000;
s22 += mash(args[i]) * 0x100000000;
}
s10 %= m1;
s11 %= m1;
s12 %= m1;
s20 %= m2;
s21 %= m2;
s22 %= m2;
mash = null;
var uint32 = function() {
var m1 = 4294967087;
var m2 = 4294944443;
var a12 = 1403580;
var a13n = 810728;
var a21 = 527612;
var a23n = 1370589;
var k, p1, p2;
/* Component 1 */
p1 = a12 * s11 - a13n * s10;
k = p1 / m1 | 0;
p1 -= k * m1;
if (p1 < 0) p1 += m1;
s10 = s11;
s11 = s12;
s12 = p1;
/* Component 2 */
p2 = a21 * s22 - a23n * s20;
k = p2 / m2 | 0;
p2 -= k * m2;
if (p2 < 0) p2 += m2;
s20 = s21;
s21 = s22;
s22 = p2;
/* Combination */
if (p1 <= p2) return p1 - p2 + m1;
else return p1 - p2;
};
var random = function() {
return uint32() * 2.3283064365386963e-10; // 2^-32
};
random.uint32 = uint32;
random.fract53 = function() {
return random() +
(uint32() & 0x1fffff) * 1.1102230246251565e-16; // 2^-53
};
random.version = 'MRG32k3a 0.9';
random.args = args;
return random;
} (Array.prototype.slice.call(arguments)));
};
// From http://baagoe.com/en/RandomMusings/javascript/
function Xorshift03() {
return (function(args) {
// George Marsaglia, 13 May 2003
// http://groups.google.com/group/comp.lang.c/msg/e3c4ea1169e463ae
var x = 123456789,
y = 362436069,
z = 521288629,
w = 88675123,
v = 886756453;
if (args.length == 0) {
args = [+new Date];
}
var mash = Mash();
for (var i = 0; i < args.length; i++) {
x ^= mash(args[i]) * 0x100000000; // 2^32
y ^= mash(args[i]) * 0x100000000;
z ^= mash(args[i]) * 0x100000000;
v ^= mash(args[i]) * 0x100000000;
w ^= mash(args[i]) * 0x100000000;
}
mash = null;
var uint32 = function() {
var t = (x ^ (x >>> 7)) >>> 0;
x = y;
y = z;
z = w;
w = v;
v = (v ^ (v << 6)) ^ (t ^ (t << 13)) >>> 0;
return ((y + y + 1) * v) >>> 0;
}
var random = function() {
return uint32() * 2.3283064365386963e-10; // 2^-32
};
random.uint32 = uint32;
random.fract53 = function() {
return random() +
(uint32() & 0x1fffff) * 1.1102230246251565e-16; // 2^-53
};
random.version = 'Xorshift03 0.9';
random.args = args;
return random;
} (Array.prototype.slice.call(arguments)));
};
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