The sign function.
- Inheritance
- Object
- Expression
- MathFunction
- DefaultFunction
- Sgn
Constructors
- Sgn(arg)
-
Creates a new sign function with given argument expression.
Properties
- arg → Expression
-
The argument of this sign function.
read-only - args → List<Variable>
-
List of arguments of this function. Arguments ust be of type Variable.
read / write, inherited - domainDimension → int
-
The dimension of the domain of definition of this function.
read-only, inherited - hashCode → int
-
Get a hash code for this object.…
read-only, inherited - name → String
-
Name of this function.
read / write, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator &(
MathFunction g) → MathFunction -
Compose operator. Creates a CompositeFunction.
inherited -
operator *(
Expression exp) → Expression -
Multiply operator. Creates a Times expression.
inherited -
operator +(
Expression exp) → Expression -
Add operator. Creates a Plus expression.
inherited -
operator -(
Expression exp) → Expression -
Subtract operator. Creates a Minus expression.
inherited -
operator /(
Expression exp) → Expression -
Divide operator. Creates a Divide expression.
inherited -
operator ==(
other) → bool -
The equality operator.…
inherited -
operator unary-(
) → Expression -
Unary minus operator. Creates a UnaryMinus expression.
inherited -
operator ^(
Expression exp) → Expression -
Power operator. Creates a Power expression.
inherited
Methods
-
derive(
String toVar) → Expression -
Derives this expression with respect to the given variable.
-
evaluate(
EvaluationType type, ContextModel context) → dynamic -
Evaluates this expression according to given type and context.
-
getParam(
int i) → Variable -
Returns the i-th parameter of this function (0-based).
inherited -
getParamByName(
String name) → Variable -
Returns the parameter with the given name.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
noSuchMethodis invoked when users invoke a non-existent method on an object. The name of the method and the arguments of the invocation are passed tonoSuchMethodin anInvocation. IfnoSuchMethodreturns a value, that value becomes the result of the original invocation.…inherited -
simplify(
) → Expression -
Returns a simplified version of this expression. Subclasses should overwrite this method, if applicable.
-
toFullString(
) → String -
Returns the full string representation of this function. This could include the name, variables and expression.…
inherited -
toString(
) → String -
Returns a string version of this expression. Subclasses should override this method. The output should be kept compatible with the
Parser.inherited