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-- File: UnaryMinus.cdl
-- Created: Tue Jan 15 10:16:32 1991
-- Author: Arnaud BOUZY
-- <adn@topsn3>
---Copyright: Matra Datavision 1991
class UnaryMinus from Expr
inherits UnaryExpression from Expr
uses GeneralExpression from Expr,
AsciiString from TCollection,
Array1OfNamedUnknown from Expr,
Array1OfReal from TColStd,
NamedUnknown from Expr
raises NumericError from Standard,
OutOfRange from Standard,
NotEvaluable from Expr
is
Create(exp : GeneralExpression)
---Purpose: Create the unary minus of <exp>.
returns mutable UnaryMinus;
ShallowSimplified(me)
---Purpose: Returns a GeneralExpression after a simplification
-- of the arguments of <me>.
returns any GeneralExpression
raises NumericError;
Copy(me)
---Purpose: Returns a copy of <me> having the same unknowns and functions.
returns mutable like me;
IsIdentical(me; Other : GeneralExpression)
---Purpose: Tests if <me> and <Other> define the same expression.
-- This method does not include any simplification before
-- testing.
returns Boolean;
IsLinear(me)
returns Boolean;
Derivative(me; X : NamedUnknown)
---Purpose: Returns the derivative on <X> unknown of <me>
returns any GeneralExpression;
NDerivative(me; X : NamedUnknown; N : Integer)
---Purpose: Returns the <N>-th derivative on <X> unknown of <me>.
-- Raises OutOfRange if <N> <= 0
returns any GeneralExpression
raises OutOfRange
is redefined;
Evaluate(me; vars : Array1OfNamedUnknown; vals : Array1OfReal)
---Purpose: Returns the value of <me> (as a Real) by
-- replacement of <vars> by <vals>.
-- Raises NotEvaluable if <me> contains NamedUnknown not
-- in <vars> or NumericError if result cannot be computed.
returns Real
raises NotEvaluable,NumericError;
String(me)
---Purpose: returns a string representing <me> in a readable way.
returns AsciiString;
end UnaryMinus;
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