Add ConstantParameterValue

Author: mewilhel

src/DynamicBoundsBase.jl

@@ -25,12 +25,13 @@ export HasStateBounds, HasConstantStateBounds, HasVariableStateBounds,
 include("problem.jl")
 
 export Nominal, Lower, Upper, Undefined, IntegratorName, Value, Gradient,
-       Subgradient, Bound, Relaxation,IsNumeric, IsSolutionSet, TerminationStatus,
-       ParameterValue, ParameterBound, SupportSet, TerminationStatusCode, relax!,
+       ConstantParameterValue, Subgradient, Bound, Relaxation,IsNumeric,
+       IsSolutionSet, TerminationStatus, ParameterValue, ParameterBound,
+       SupportSet, TerminationStatusCode, relax!,
        integrate!, make, AbstractDERelaxIntegator, AbstractODERelaxIntegrator,
        AbstractBoundLoc, TimeIndex, COMPLETED, EMPTY, RELAXATION_NOT_CALLED,
-       NUMERICAL_ERROR, INVALID_OPTION, OTHER_ERROR, LIMIT_EXCEEDED, ParameterNumber,
-       StateNumber, SupportNumber, LocalSensitivityOn
+       NUMERICAL_ERROR, INVALID_OPTION, OTHER_ERROR, LIMIT_EXCEEDED,
+       ParameterNumber, StateNumber, SupportNumber, LocalSensitivityOn
 
 include("integrator.jl")
 

src/integrator.jl

@@ -315,6 +315,17 @@ struct ParameterValue <: AbstractIntegratorAttribute
 end
 ParameterValue() = ParameterValue(-1)
 
+
+"""
+$(TYPEDEF)
+
+A integrator attribute used to access the constant parameter values.
+"""
+struct ConstantParameterValue <: AbstractIntegratorAttribute
+    i::Int
+end
+ConstantParameterValue() = ConstantParameterValue(-1)
+
 """
 $(TYPEDEF)