Parameters

class Parameter

Values that appear as mutable constants in expressions.

Mutable parameters are used to define coefficients and constant terms can be changed without reconstructing the expression.

Stream operator

Stream the parameter to an output stream.

param ostr:

output stream

param arg:

parameter

Public Functions

Parameter()

Constructs a Parameter with the default value zero.

explicit Parameter(const std::string &name)

Constructs a Parameter initialized with a given value and a name.

Parameters:

• value – the initial value of the parameter

• name – the name of the parameter

Parameter(const ParameterRepn &_repn)

Copy constructor

Parameters:

arg – a parameter whose value is shared

double value() const

Returns:

the value of the parameter

Parameter &value(const Expression &value)

Set the parameter value.

Returns:

the parameter object.

Parameter &value(double value)

Set the value of the parameter

Expression value_expression() const

Returns:

the expression defining the parameter value

std::string name() const

Returns:

the name of the parameter

Parameter &name(const std::string &name)

Set the name of the parameter

inline bool is_constant() const

Returns:

false because this is not a contant