Database

Product Name
Download

aa1096.asc

Associated article: Algorithm Alley

Tags: Database    

Published source code in the article by Dann Corbit in which he approximates the value of an integral is an important kind of calculation that's not nearly as you think. Dann shows how simple it is to get good results, then discusses some new techniques that offer even better accuracy. Also see AA1096.ZIP.

					_Algorithm Alley_
by Dann Corbit

Listing One
void EXPORT Integral::Evaluate() {
   // We use this constant to divide the interval into two equal parts:
   const long double ldHalf = 0.5e0L;

   // Note that the maximum possible error is:
   // -(1,346,350/326,918,592)*h^13*epsilon, where ...
To continue reading Log In or Register
INFO-LINK




Currently we allow the following HTML tags in comments:

Single tags

These tags can be used alone and don't need an ending tag.

<br> Defines a single line break

<hr> Defines a horizontal line

Matching tags

These require an ending tag - e.g. <i>italic text</i>

<a> Defines an anchor

<b> Defines bold text

<big> Defines big text

<blockquote> Defines a long quotation

<caption> Defines a table caption

<cite> Defines a citation

<code> Defines computer code text

<em> Defines emphasized text

<fieldset> Defines a border around elements in a form

<h1> This is heading 1

<h2> This is heading 2

<h3> This is heading 3

<h4> This is heading 4

<h5> This is heading 5

<h6> This is heading 6

<i> Defines italic text

<p> Defines a paragraph

<pre> Defines preformatted text

<q> Defines a short quotation

<samp> Defines sample computer code text

<small> Defines small text

<span> Defines a section in a document

<s> Defines strikethrough text

<strike> Defines strikethrough text

<strong> Defines strong text

<sub> Defines subscripted text

<sup> Defines superscripted text

<u> Defines underlined text

Dr. Dobb's encourages readers to engage in spirited, healthy debate, including taking us to task. However, Dr. Dobb's moderates all comments posted to our site, and reserves the right to modify or remove any content that it determines to be derogatory, offensive, inflammatory, vulgar, irrelevant/off-topic, racist or obvious marketing or spam. Dr. Dobb's further reserves the right to disable the profile of any commenter participating in said activities.

 
Disqus Tips To upload an avatar photo, first complete your Disqus profile. | View the list of supported HTML tags you can use to style comments. | Please read our commenting policy.
 

Best of the Web

First C Compiler Now on Github

The earliest known C compiler by the legendary Dennis Ritchie has been published on the repository.

Quick Read

HTML5 Mobile Development: Seven Good Ideas (and Three Bad Ones)

HTML5 Mobile Development: Seven Good Ideas (and Three Bad Ones)

Quick Read

Building Bare Metal ARM Systems with GNU

All you need to know to get up and running... and programming on ARM

Quick Read

Amazon's Vogels Challenges IT: Rethink App Dev

Amazon Web Services CTO says promised land of cloud computing requires a new generation of applications that follow different principles.

Quick Read

How to Select a PaaS Partner

Eventually, the vast majority of Web applications will run on a platform-as-a-service, or PaaS, vendor's infrastructure. To help sort out the options, we sent out a matrix with more than 70 decision points to a variety of PaaS providers.

Quick Read


More "Best of the Web" >>


Database Recent Articles

Most Popular

Stories Blogs

Video

View All Videos

Upcoming Events



Most Recent Premium Content

Digital Issues