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-- File: GeneralFunction.cdl
-- Created: Mon Jan 14 10:48:27 1991
-- Author: Arnaud BOUZY
-- <adn@topsn3>
---Copyright: Matra Datavision 1991
deferred class GeneralFunction from Expr
inherits TShared from MMgt
---Purpose: Defines the general purposes of any function.
uses NamedUnknown from Expr,
GeneralExpression from Expr,
Array1OfNamedUnknown from Expr,
Array1OfReal from TColStd,
AsciiString from TCollection
raises OutOfRange from Standard,
DimensionMismatch from Standard,
NumericError from Standard,
NotEvaluable from Expr
is
NbOfVariables(me)
---Purpose: Returns the number of variables of <me>.
---Level: Advanced
returns Integer
is deferred;
Variable(me ; index : Integer)
---Purpose: Returns the variable denoted by <index> in <me>.
-- Raises OutOfRange if index > NbOfVariables.
---Level: Advanced
returns NamedUnknown
raises OutOfRange
is deferred;
Copy(me)
---Purpose: Returns a copy of <me> with the same form.
---Level: Advanced
returns mutable like me
is deferred;
Derivative(me; var : NamedUnknown)
---Purpose: Returns Derivative of <me> for variable <var>.
---Level: Advanced
returns GeneralFunction
is deferred;
Derivative(me; var : NamedUnknown; deg : Integer)
---Purpose: Returns Derivative of <me> for variable <var> with
-- degree <deg>.
---Level: Advanced
returns GeneralFunction
is deferred;
Evaluate(me; vars : Array1OfNamedUnknown;
vals : Array1OfReal)
---Purpose: Computes the value of <me> with the given variables.
-- Raises NotEvaluable if <vars> does not match all variables
-- of <me>.
---Level: Advanced
returns Real
raises NotEvaluable,NumericError,DimensionMismatch
is deferred;
IsIdentical(me; func : GeneralFunction)
---Purpose: Tests if <me> and <func> are similar functions (same
-- name and same used expression).
---Level: Internal
returns Boolean
is deferred;
IsLinearOnVariable(me; index : Integer)
---Purpose: Tests if <me> is linear on variable on range <index>
---Level: Internal
returns Boolean
is deferred;
GetStringName(me)
---Level: Internal
returns AsciiString
is deferred;
end GeneralFunction;
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