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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--opale.mathtools.ScanString | +--opale.mathtools.ParseFunction
This class will parse a function definition and solve it returning the value. The function may have upto 3 independent variables in it (x,y,z).
Known Bugs This class is not fool proof. If the answer is wrong then use the parenthesis to force the order of evaluation. The most likely place this will be needed is in the use of the power command. The exponent is not evaluated correctly if it begins with a unary operator.
Field Summary | |
boolean |
debug
Debug variable. |
Fields inherited from class opale.mathtools.ScanString |
EOS, ERROR, NUMBER, nval, sval, UNKNOWN |
Constructor Summary | |
ParseFunction()
Instantiate the class |
|
ParseFunction(java.lang.String s)
Instantiate the class and define the string to parse. |
Method Summary | |
double |
getResult()
Return the solution of the function if it has no independent values or they have already been set using the set methods |
double |
getResult(double x)
Return the solution of the function given the independent values |
double |
getResult(double x,
double y)
Return the solution of the function given the independent values |
double |
getResult(double x,
double y,
double z)
Return the solution of the function given the independent values |
double |
getResult(double t,
double x,
double y,
double z)
Return the solution of the function given the independent values |
double[] |
getResults(int n,
double[] x)
Return an array of solutions given an array of x values |
double[] |
getResults(int n,
double[] x,
double[] y)
Return an array of solutions given an array of x values and y values |
double[] |
getResults(int n,
double[] x,
double[] y,
double[] z)
Return an array of solutions given an array of x values, y values and z values. |
double[] |
getResults(int n,
double[] t,
double[] x,
double[] y,
double[] z)
Return an array of solutions given an array of x values, y values and z values and t values. |
boolean[] |
getVariables()
Return a boolean array with index 0 true if the independent variable x was found in the function, index 1 true if y was found, and index 2 true if z was found, and index 3 true si t was found. |
boolean |
parse()
Parse the previously set string |
boolean |
parse(java.lang.String s)
Parse the string. |
void |
setDeg()
Indicates that the argument of trigonometrics functions are measured in degrees. |
void |
setRad()
Indicates that the argument of trigonometrics functions are in radians. |
void |
setT(double t)
Set the value of the independent variable T. |
void |
setX(double x)
Set the value of the independent variable X. |
void |
setY(double y)
Set the value of the independent variable Y. |
void |
setZ(double z)
Set the value of the independent variable Z. |
Methods inherited from class opale.mathtools.ScanString |
addKeyWord, getKeyValue, nextWord, resetKeyWords, setString |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public boolean debug
Constructor Detail |
public ParseFunction()
public ParseFunction(java.lang.String s)
s
- The string to be parsed.Method Detail |
public boolean parse(java.lang.String s)
s
- The string to parsepublic boolean parse()
public double getResult(double x, double y, double z) throws java.lang.Exception
x
- indpendent x valuey
- indpendent y valuez
- indpendent z valuepublic double getResult(double t, double x, double y, double z) throws java.lang.Exception
t
- indpendent t valuex
- indpendent x valuey
- indpendent y valuez
- indpendent z valuepublic double getResult(double x, double y) throws java.lang.Exception
x
- indpendent x valuey
- indpendent y valuepublic double getResult(double x) throws java.lang.Exception
x
- indpendent x valuepublic double getResult() throws java.lang.Exception
setX(double)
,
setY(double)
,
setZ(double)
public double[] getResults(int n, double[] x) throws java.lang.Exception
n
- number of values to process in the input arrayx
- Array containing the x values.java.lang.Exception
- Generic exception if the array index n<=0, or x is null.public double[] getResults(int n, double[] x, double[] y) throws java.lang.Exception
n
- number of values to process in the input arrayx
- Array containing the x values.y
- Array containing the y values.java.lang.Exception
- Generic exception if the array index n<=0, or x is null, or y is null.public double[] getResults(int n, double[] x, double[] y, double[] z) throws java.lang.Exception
n
- number of values to process in the input arrayx
- Array containing the x values.y
- Array containing the y values.java.lang.Exception
- Generic exception if the array index n<=0, or x is null,
or y is null, or z is null.public double[] getResults(int n, double[] t, double[] x, double[] y, double[] z) throws java.lang.Exception
n
- number of values to process in the input arrayt
- Array containing the t values.x
- Array containing the x values.y
- Array containing the y values.z
- Array containing the z values.java.lang.Exception
- Generic exception if the array index n<=0, or x is null,
or y is null, or z is null.public boolean[] getVariables()
public void setT(double t)
public void setX(double x)
public void setY(double y)
public void setZ(double z)
public void setDeg()
public void setRad()
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