[Kinetics] Add methods for inspecting ChebyshevRate objects

include/cantera/kinetics/RxnRates.h

@@ -521,7 +521,48 @@ public:
         return false;
     }
 
+    //! Minimum valid temperature [K]
+    double Tmin() const {
+        return Tmin_;
+    }
+
+    //! Maximum valid temperature [K]
+    double Tmax() const {
+        return Tmax_;
+    }
+
+    //! Minimum valid pressure [Pa]
+    double Pmin() const {
+        return Pmin_;
+    }
+
+    //! Maximum valid pressure [Pa]
+    double Pmax() const {
+        return Pmax_;
+    }
+
+    //! Number of points in the pressure direction
+    size_t nPressure() const {
+        return nP_;
+    }
+
+    //! Number of points in the temperature direction
+    size_t nTemperature() const {
+        return nT_;
+    }
+
+    //! Access the Chebyshev coefficients.
+    /*!
+     *  \f$ \alpha_{t,p} = \mathrm{coeffs}[N_P*t + p] \f$ where
+     *  \f$ 0 <= t < N_T \f$ and \f$ 0 <= p < N_P \f$.
+     */
+    const vector_fp& coeffs() const {
+        return chebCoeffs_;
+    }
+
 protected:
+    double Tmin_, Tmax_; //!< valid temperature range
+    double Pmin_, Pmax_; //!< valid pressure range
     double TrNum_, TrDen_; //!< terms appearing in the reduced temperature
     double PrNum_, PrDen_; //!< terms appearing in the reduced pressure
 

src/kinetics/RxnRates.cpp

@@ -245,7 +245,11 @@ std::vector<std::pair<double, Arrhenius> > Plog::rates() const
 }
 
 ChebyshevRate::ChebyshevRate(const ReactionData& rdata)
-    : nP_(rdata.chebDegreeP)
+    : Tmin_(rdata.chebTmin)
+    , Tmax_(rdata.chebTmax)
+    , Pmin_(rdata.chebPmin)
+    , Pmax_(rdata.chebPmax)
+    , nP_(rdata.chebDegreeP)
     , nT_(rdata.chebDegreeT)
     , chebCoeffs_(rdata.chebCoeffs)
     , dotProd_(rdata.chebDegreeT)
@@ -263,7 +267,11 @@ ChebyshevRate::ChebyshevRate(const ReactionData& rdata)
 
 ChebyshevRate::ChebyshevRate(double Pmin, double Pmax, double Tmin, double Tmax,
                              const Array2D& coeffs)
-    : nP_(coeffs.nColumns())
+    : Tmin_(Tmin)
+    , Tmax_(Tmax)
+    , Pmin_(Pmin)
+    , Pmax_(Pmax)
+    , nP_(coeffs.nColumns())
     , nT_(coeffs.nRows())
     , chebCoeffs_(coeffs.nColumns() * coeffs.nRows(), 0.0)
     , dotProd_(coeffs.nRows())