ec_defs.h File Reference

Definition of the simpliest classes and constants. More...

Classes
struct	wxEcPosition
	Stores an expression and two indexes (From/To) More...
class	wxEcUPoint
	Stores 2 unsigned integers. More...

Macros
#define	wxECM_USEDEBUG
#define	wxECD_SOFTWARE   wxT("wxEcMath")
#define	wxECD_URL   wxT("http://sourceforge.net/projects/wxecmath/")
#define	wxECD_VERSION   wxT("0.6.4")
#define	wxECD_AVERAGESPEED   9000
#define	wxECD_OPERATORS   wxT("^/*%-+")
#define	wxECD_ALPHABET   wxT("abcdefghijklmnopqrstuvwxyz")
#define	wxECD_NUMERIC   wxT("0123456789")
#define	wxECD_EXTRASYMBOLS   wxT("_().#")
#define	wxECD_PERMITTED   wxT("abcdefghijklmnopqrstuvwxyz0123456789^/*%-+_().#")
#define	wxECD_STACKMAX   128
#define	wxECD_CURVEMAX   64
#define	wxECD_STEPSMAX   64
#define	wxECD_RESOLUTION   500
#define	wxECD_DXSTEP   0.0001
#define	wxECD_RETICULESIZE   3
#define	wxECD_ZOOMFACTOR   1.5

Enumerations
enum	{   wxECE_NOERROR = 0, wxECE_SYNTAX, wxECE_UNDEFCONSTANT, wxECE_MEMORYEXCEEDED,   wxECE_DIVBYZERO, wxECE_DOMAINERROR, wxECE_UNKNOWNFUNC, wxECE_STACKERROR,   wxECE_UNCOMPUTABLE }
enum	{ wxECA_RADIAN = 0, wxECA_DEGREE, wxECA_GRADIAN }
enum	{ wxECT_CARTESIAN = 0, wxECT_PARAMETRIC, wxECT_POLAR, wxECT_CLOUD }

Detailed Description

Definition of the simpliest classes and constants.

Author

ecrucru

Version

0.6.4

Date

August 2008

Implements the definition of core elements needed by the wxEcMath classes. Before compiling a release, please take a look to wxECM_USEDEBUG. This can increase the performances of your software very significantly.

Macro Definition Documentation

#define wxECD_ALPHABET   wxT("abcdefghijklmnopqrstuvwxyz")

All the letters of the alphabet, written in lowercase (a-z).

#define wxECD_AVERAGESPEED   9000

Average computations you can make in 1 second. Allows you to predict the time needed in complex algorithms. The value depends on wxECM_USEDEBUG.

Remarks

The formula chosen to evaluate the speed is "(1+sqrt(5))/2-2*cos(2*pi/5)". Depending on the length of your formula, you won't get exactly this speed. Maybe more, maybe less. However this value should be representative of most of cases.

See also

wxECM_USEDEBUG

#define wxECD_CURVEMAX   64

Maximal number of curves you can define.

See also

wxEcPlot::AddCurve()

#define wxECD_DXSTEP   0.0001

The step used to approximate the derivative of a curve at a given point.

See also

wxEcPlot::DrawDerivative()

#define wxECD_EXTRASYMBOLS   wxT("_().#")

Extra symbols available when evaluated.

#define wxECD_NUMERIC   wxT("0123456789")

All the numbers supported (0-9).

#define wxECD_OPERATORS   wxT("^/*%-+")

All the operators supported, ordered by mathematical priority.

#define wxECD_PERMITTED   wxT("abcdefghijklmnopqrstuvwxyz0123456789^/*%-+_().#")

Allowed ANSI characters are defined here. Since 0.6.1, you can define a constant with the name of your choice. It means you can use a chinese or japanese name if you have enabled "UNICODE". This choice is automatically performed.

#define wxECD_RESOLUTION   500

Default number of points used to draw a parametric or a polar curve. The value applies to a curve, not to all the curves loaded in a wxEcPlot.

See also

wxEcCurve::NumPoints

#define wxECD_RETICULESIZE   3

The radius of the reticule.

See also

wxEcPlot::SetReticule()

#define wxECD_SOFTWARE   wxT("wxEcMath")

Name of the software.

#define wxECD_STACKMAX   128

Maximal number of constants you may define.

Maximal number of entities that an inline expression may contain (a+b*c = 3 entities).

#define wxECD_STEPSMAX   64

Maximal number of graduations a plot may contain.

#define wxECD_URL   wxT("http://sourceforge.net/projects/wxecmath/")

Internet address where you can download the software.

#define wxECD_VERSION   wxT("0.6.4")

Version of the software currently used.

#define wxECD_ZOOMFACTOR   1.5

The default zoom factor.

See also

wxEcPlot::SetZoomFactor()

#define wxECM_USEDEBUG

When defined, extra features are compiled inside wxEcEngine. They were implemented during the development of wxEcMath to track bugs. For a lambda-user, there is no need to use them (performances would be more than 2 times slower).

To enable these features without editing the library, you can write :

#define  wxECM_USEDEBUG
#include "ec_defs.h"
#include "ec_engine.h"

But it is really better to define wxECM_USEDEBUG as a preprocessor definition. Thus it will apply to the whole project. You can do by editing the settings of the project, or by adding /DwxECM_USEDEBUG=1 in the command line.

See also

wxEcEngine

wxEcEngine::LogAction()

wxEcEngine::GetLog()

Enumeration Type Documentation

anonymous enum

Error codes returned by wxEcEngine::Compute().

See also

wxEcEngine::GetLastError()

Enumerator
wxECE_NOERROR	No error.
wxECE_SYNTAX	The syntax is not correct.
wxECE_UNDEFCONSTANT	The constant is not defined.
wxECE_MEMORYEXCEEDED	The maximal number of constants/curves that you may define is reached. See also wxECD_STACKMAX
wxECE_DIVBYZERO	Division by zero
wxECE_DOMAINERROR	The function is not defined for the given value.
wxECE_UNKNOWNFUNC	The name of the function is unknown.
wxECE_STACKERROR	The expression is too long to be evaluated. See also wxECD_STACKMAX
wxECE_UNCOMPUTABLE	Generic error.

anonymous enum

Trigonometric modes. Radian is the default mode.

See also

wxEcEngine::GetTrigonometricMode()

wxEcEngine::SetTrigonometricMode()

Enumerator
wxECA_RADIAN	Radian.
wxECA_DEGREE	Degree.
wxECA_GRADIAN	Gradian.

anonymous enum

Types of curves you can draw.

See also

wxEcCurve

Enumerator
wxECT_CARTESIAN	Cartesian: y = f(x)
wxECT_PARAMETRIC	Parametric: x = f(t) && y = f(t)
wxECT_POLAR	Polar : r = f(t)
wxECT_CLOUD	Graphical representation : data from experiments, evolution of the stock exchange...