o2scl::funct_string Class Reference

One-dimensional function from a string. More...

#include <funct.h>

Detailed Description

For example,

funct_string f("pi*r^2","r");
f.set_parm("pi",o2scl_const::pi);
for(double r=1.0;r<=2.0;r+=0.1) {
  cout << f(x) << endl;
}

will print out the area of circles having radii between 1 and 2.

Definition at line 78 of file funct.h.

Public Member Functions
	funct_string (std::string expr, std::string var)
	Specify the string and the parameters.
int	set_function (std::string expr, std::string var)
	Specify the string and the parameters.
int	set_parm (std::string name, double val)
	Set the values of the auxilliary parameters that were specified in parms in the constructor.
virtual double	operator() (double x) const
	Compute the function at point x and return the result.

Protected Attributes
calculator	calc
	The object for evaluating strings.
std::map< std::string, double >	vars
	Parameter map.
std::string	st_form
	The expr.
std::string	st_var
	The variable.

Private Member Functions
	funct_string (const funct_string &)
funct_string &	operator= (const funct_string &)

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The documentation for this class was generated from the following file:

• /home/awsteiner/wcs/o2scl/src/base/funct.h