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Condition Number

Evaluates the condition number of functions.
(1786 downloads for this version - 7413 downloads for all versions)
Details
Version
0.2
A more recent valid version exists: 0.2.2
Author
Michael Baudin
Owner Organization
DIGITEO
Maintainer
Michael Baudin
Category
License
Dependency
Creation Date
February 3, 2011
Source created on
Scilab 5.2.x
Binaries available on
Scilab 5.2.x:
Windows 64-bit Windows 32-bit Linux 64-bit Linux 32-bit MacOSX
Install command
--> atomsInstall("condnb")
Description
            Purpose
----

These functions provides the condition number of various elementary functions. 
Their goal is to evaluate the potential numerical difficulty of evaluating 
numerically a function at a given point. 
We may use this module while testing a given function. 

The toolbox is based on macros.

To get an overview of the functions in this module, use :

help condnb_overview

This module uses the apifun module.

Features
--------

The following is a list of the current functions :
 * condnb_condnum : Computes the empirical condition number of the function f at
point x.
 * condnb_acoscond : Computes the condition number of the acos function.
 * condnb_asincond : Computes the condition number of the asin function.
 * condnb_atancond : Computes the condition number of the atan function.
 * condnb_coscond : Computes the condition number of the cos function.
 * condnb_erfcond : Computes the condition number of the erf function.
 * condnb_erfinvcond : Computes the condition number of the erfinv function.
 * condnb_expcond : Computes the condition number of the exp function.
 * condnb_logcond : Computes the condition number of the log function.
 * condnb_plotcond : Plots the condition number of a function.
 * condnb_powcond : Computes the condition number of the pow function.
 * condnb_sincond : Computes the condition number of the sin function.
 * condnb_sqrtcond : Computes the condition number of the square root function.
 * condnb_sumcond : Computes the condition number of the sum function.
 * condnb_tancond : Computes the condition number of the tan function.

Forge
-----

http://forge.scilab.org/index.php/p/condnb/
            
Files (2)
[100.42 kB]
Source code archive

[178.82 kB]
OS-independent binary for Scilab 5.2.x
Binary version
Automatically generated by the ATOMS compilation chain

News (0)
Comments (2)     Leave a comment 
Comment from Michael Baudin -- February 3, 2011, 05:30:05 PM    
Changes for version 0.1:

condnb (0.1)
    * Created module from functions in the assert module.
    * Added unit tests for exp, log, pow and sqrt.
    * Updated Overview ; added Quick Start.
    * Updated implementation of plotcond.
    * Use apifun.
Comment from Michael Baudin -- February 3, 2011, 05:30:19 PM    
Changes for version 0.2:

condnb (0.2)
    * Fixed ticket #260: the plot example in acos did not work.
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