scratchfoundation/paper.js
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This commit is contained in:
Jürg Lehni 2011-03-07 00:40:48 +00:00
parent 003cfbd32b
commit 91160bc5d7
1 changed files with 11 additions and 6 deletions
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17
src/util/Numerical.js
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@ -1,4 +1,5 @@
var Numerical = new function() {
var abscissa = [
-0.5773502692, 0.5773502692,
-0.7745966692, 0.7745966692, 0,
@ -22,11 +23,12 @@ var Numerical = new function() {
return {
TOLERANCE: 10e-6,
// Gauss-Legendre Numerical Integration, a Gauss.as port from Singularity:
//
// Copyright (c) 2006-2007, Jim Armstrong (www.algorithmist.net)
// All Rights Reserved.
/**
* Gauss-Legendre Numerical Integration, ported from Singularity:
*
* Copyright (c) 2006-2007, Jim Armstrong (www.algorithmist.net)
* All Rights Reserved.
*/
gauss: function(f, a, b, n) {
n = Math.min(Math.max(n, 2), 8);
@ -40,7 +42,10 @@ var Numerical = new function() {
return mul * sum;
},
// Van Wijngaarden–Dekker–Brent method for root finding
/**
* Van Wijngaarden–Dekker–Brent method for root finding, implementation
* based on Numerical Recipes in C
*/
brent: function(f, a, b, tol) {
var c = b, d = 0, e = 0,
fa = f(a),