mxGetEps (C and Fortran)

Value of EPS

C Syntax

#include "matrix.h"
double mxGetEps(void);

Fortran Syntax

real*8 mxGetEps

Returns

Value of the MATLAB^® eps variable

Description

Call mxGetEps to return the value of the MATLAB eps variable. This variable holds the distance from 1.0 to the next largest floating-point number. As such, it is a measure of floating-point accuracy. The MATLAB pinv and rank functions use eps as a default tolerance.

Examples

To open an example, type:

edit([fullfile(matlabroot,"extern","examples","mx","filename")]);

where filename is:

• mxgeteps.c

• mxgetepsf.F