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See:
Description
Interface Summary | |
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CallbackEvaluationI | Functions which require greater control over their evaluation should implement this interface. |
CallbackEvaluationI.Runnable | Callback functions which have a working run(stack) method. |
LValueI |
Class Summary | |
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Abs | Absolute value function for Numbers it returns the absolute value of same type
for Complex it returns the Modulus. |
Add | Addition function. |
ArcCosine | The acos function. |
ArcCosineH | Implements the arcCosH function. |
ArcSine | |
ArcSineH | Implements the arcSinH function. |
ArcTangent | |
ArcTangent2 | atan2(y, x) Returns the angle whose tangent is y/x. |
ArcTanH | Implements the arcTanH function. |
Arg | Argument of a complex number |
ArrayFunctionBase | Base class for functions that operate on arrays such as Average, MinMax, and VSum. |
Assign | An assignment operator so we can do x=3+4. |
Average | Average function class, calculates the average of all its arguments. |
BinaryFunction | Convenient base class for binary functions. |
Binomial | Binomial coefficients: binom(n,i). |
Ceil | A PostfixMathCommandI which find the smallest integer above the number ceil(pi) give 4 ceil(-i) give -3 |
Comparative | Implements the comparative operations <, >, <=, >=, ! |
ComplexPFMC | Converts a pair of real numbers to a complex number Complex(x,y)=x+i y. |
Conjugate | The complex conjugate of a number conj(c) |
Cosecant | |
Cosine | |
CosineH | |
Cotangent | The cotangent function. |
Cross | The cross product of two 3D vectors. |
Divide | |
Dot | The dot product of two vectors. |
Ele | Function which allows array access using the a[3] notation on left and right hand side. |
Exp | The exp function. |
Floor | A PostfixMathCommandI which find the largest integer above the number floor(pi) give 3 floor(-i) give -4 |
Identity | A Unary operator which does nothing, used for unary plus +x. |
If | The if(condExpr, posExpr, negExpr) function. |
Imaginary | |
LazyLogical | A version of the logical operators which use lazy evaluation. |
List | The list function. |
Logarithm | Log base 10. |
LogBase2 | Log base 2. |
Logical | Logical operators AND and OR. |
MinMax | Minimum and Maximum functions. |
Modulus | Calculates the modulus x % y of the arguments. |
Multiply | |
NaryBinaryFunction | Convenient base class for n-ary functions backed by a binary operation. |
NaryFunction | Convenient base class for nary functions. |
NaturalLogarithm | Natural logarithm. |
Not | Implementation of the not function. |
Polar | Converts an [r,theta] pair to a complex number r * e^(i theta). |
PostfixMathCommand | Function classes extend this class. |
Power | Computes the power of an number. |
Random | Encapsulates the Math.random() function. |
Real | |
RInt | A PostfixMathCommandI which rounds a number to the closest integer. |
Round | A PostfixMathCommandI which rounds a number. |
Secant | The secant function. sec(x)=1/cos(x). |
Signum | The signum function returns -1 if x<0, 1 if x>0, 0 if x==0. |
Sine | |
SineH | Hyperbolic sin. |
SquareRoot | Square root function. |
Str | Converts an object into its string representation. |
StrictNaturalLogarithm | A strict version of Natural logarithm. |
Subtract | |
Sum | Adds it arguments sum(1,2,3,4,5) will be 15. |
Tangent | The tan function. |
TanH | Hyperbolic tan. |
UMinus | |
UnaryFunction | Convenient base class for unary functions. |
VSum | Summation function which expands the arguments. |
Enum Summary | |
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ArrayFunctionBase.ZeroLengthErrorBehaviour | How to respond to a zero length array as argument |
Exception Summary | |
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IllegalParameterException | Represents an illegal parameter |
Classes that implement the built-in functions and operators.
There are several base classes and interfaces which can be used:
PostfixMathCommandI
void run(Stack
method.PostfixMathCommand
UnaryFunction
Object eval(Object arg)
method.BinaryFunction
Object eval(Object l,Object r)
method.NaryBinaryFunction
Object eval(Object l,Object r)
method.CallbackEvaluationI
com.singularsys.jep.reals
package also define some interfaces for functions which take double
arguments and
return double
results, which can be quicker in special purpose evaluators.
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