int vectester(const PairScalars& example, const std::string& testname)
{
typedef typename Antioch::value_type<PairScalars>::type Scalar;
const unsigned int n_data(40);
std::vector<Scalar> x_ref(n_data,0),y_ref(n_data,0);
const Scalar min = -5L;
const Scalar max = 8L;
fill_ref(x_ref,y_ref,n_data,min, max);
Antioch::GSLSpliner gsl_spline(x_ref,y_ref);
// Construct from example to avoid resizing issues
PairScalars x = example;
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
x[2*tuple] = -3.5;
x[2*tuple+1] = 5.1;
}
int return_flag = 0;
#ifdef ANTIOCH_HAVE_GRVY
gt.BeginTimer(testname);
#endif
const PairScalars gsl = gsl_spline.interpolated_value(x);
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testname);
#endif
const PairScalars exact = function(x);
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
return_flag = check_value<Scalar>(exact[2*tuple], gsl[2*tuple], x[2*tuple], "gsl vectorized") || return_flag;
return_flag = check_value<Scalar>(exact[2*tuple+1], gsl[2*tuple+1], x[2*tuple+1], "gsl vectorized") || return_flag;
}
return return_flag;
}
int vectester(const PairScalars& example, const std::string& testname)
{
typedef typename Antioch::value_type<PairScalars>::type Scalar;
std::vector<std::string> species_str_list;
const unsigned int n_species = 2;
species_str_list.reserve(n_species);
species_str_list.push_back( "N2" );
species_str_list.push_back( "Air" ); // Yes, I know this doesn't make sense, it's just a test.
Antioch::ChemicalMixture<Scalar> chem_mixture( species_str_list );
Antioch::MixtureViscosity<Antioch::SutherlandViscosity<Scalar>,Scalar> s_mu_mixture(chem_mixture);
Antioch::MixtureViscosity<Antioch::BlottnerViscosity<Scalar>,Scalar> b_mu_mixture(chem_mixture);
Antioch::read_sutherland_data_ascii_default<Scalar>( s_mu_mixture );
Antioch::read_blottner_data_ascii_default<Scalar>( b_mu_mixture );
std::cout << s_mu_mixture << std::endl;
std::cout << b_mu_mixture << std::endl;
PairScalars T = example;
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
T[2*tuple ] = 1500.1;
T[2*tuple+1] = 1600.1;
}
PairScalars mu = example;
std::cout << "Blottner:" << std::endl;
for( unsigned int s = 0; s < n_species; s++ )
{
#ifdef ANTIOCH_HAVE_GRVY
const std::string testblottner = testname + "-blottner";
gt.BeginTimer(testblottner);
#endif
mu = b_mu_mixture(s,T);
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testblottner);
#endif
std::cout << "mu(" << species_str_list[s] << ") = " << mu << std::endl;
}
std::cout << "Sutherland:" << std::endl;
for( unsigned int s = 0; s < n_species; s++ )
{
#ifdef ANTIOCH_HAVE_GRVY
const std::string testsutherland = testname + "-sutherland";
gt.BeginTimer(testsutherland);
#endif
mu = s_mu_mixture(s,T);
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testsutherland);
#endif
std::cout << "mu(" << species_str_list[s] << ") = " << mu << std::endl;
}
int return_flag = 0;
return return_flag;
}
int vectester(const std::string& input_name,
const PairScalars& example,
const std::string& testname )
{
typedef typename Antioch::value_type<PairScalars>::type Scalar;
std::vector<std::string> species_str_list;
species_str_list.reserve(n_species);
species_str_list.push_back( "N2" );
species_str_list.push_back( "O2" );
species_str_list.push_back( "N" );
species_str_list.push_back( "O" );
species_str_list.push_back( "NO" );
Antioch::ChemicalMixture<Scalar> chem_mixture( species_str_list );
Antioch::ReactionSet<Scalar> reaction_set( chem_mixture );
Antioch::CEAThermodynamics<Scalar> thermo( chem_mixture );
Antioch::read_reaction_set_data_xml<Scalar>( input_name, true, reaction_set );
PairScalars T = example;
PairScalars P = example;
// Mass fractions
PairScalars massfrac = example;
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
T[2*tuple ] = 1500.0;
T[2*tuple+1] = 1500.0;
P[2*tuple ] = 1.0e5;
P[2*tuple+1] = 1.0e5;
massfrac[2*tuple ] = 0.2;
massfrac[2*tuple+1] = 0.2;
}
const std::vector<PairScalars> Y(n_species,massfrac);
std::vector<PairScalars> molar_densities(n_species, example);
std::vector<PairScalars> h_RT_minus_s_R(n_species, example);
std::vector<PairScalars> dh_RT_minus_s_R_dT(n_species, example);
Antioch::KineticsEvaluator<Scalar,PairScalars> kinetics( reaction_set, example );
std::vector<PairScalars> omega_dot(n_species, example);
std::vector<PairScalars> omega_dot_2(n_species, example);
std::vector<PairScalars> domega_dot_dT(n_species, example);
std::vector<std::vector<PairScalars> > domega_dot_drhos
(n_species, omega_dot); // omega_dot is a good example vec<Pair>
#ifdef ANTIOCH_HAVE_GRVY
const std::string testnormal = testname + "-normal";
gt.BeginTimer(testnormal);
#endif
const PairScalars R_mix = chem_mixture.R(Y);
const PairScalars rho = P/(R_mix*T);
chem_mixture.molar_densities(rho,Y,molar_densities);
typedef typename Antioch::CEAThermodynamics<Scalar>::
template Cache<PairScalars> Cache;
thermo.h_RT_minus_s_R(Cache(T),h_RT_minus_s_R);
thermo.dh_RT_minus_s_R_dT(Cache(T),dh_RT_minus_s_R_dT);
kinetics.compute_mass_sources( T, molar_densities, h_RT_minus_s_R, omega_dot );
kinetics.compute_mass_sources_and_derivs ( T,
molar_densities,
h_RT_minus_s_R,
dh_RT_minus_s_R_dT,
omega_dot_2,
domega_dot_dT,
domega_dot_drhos );
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testnormal);
#endif
int return_flag = 0;
#ifdef ANTIOCH_HAVE_EIGEN
{
typedef Eigen::Array<PairScalars,n_species,1> SpeciesVecEigenType;
#ifdef ANTIOCH_HAVE_GRVY
const std::string testeigenA = testname + "-eigenA";
gt.BeginTimer(testeigenA);
#endif
SpeciesVecEigenType eigen_Y;
Antioch::init_constant(eigen_Y, massfrac);
SpeciesVecEigenType eigen_molar_densities;
Antioch::init_constant(eigen_molar_densities, example);
SpeciesVecEigenType eigen_h_RT_minus_s_R;
Antioch::init_constant(eigen_h_RT_minus_s_R, example);
SpeciesVecEigenType eigen_dh_RT_minus_s_R_dT;
Antioch::init_constant(eigen_dh_RT_minus_s_R_dT, example);
SpeciesVecEigenType eigen_omega_dot;
Antioch::init_constant(eigen_omega_dot, example);
SpeciesVecEigenType eigen_domega_dot_dT;
Antioch::init_constant(eigen_domega_dot_dT, example);
// FIXME: What to do for domega_dot_drhos type?
const PairScalars eigen_R = chem_mixture.R(eigen_Y);
chem_mixture.molar_densities(rho,eigen_Y,eigen_molar_densities);
thermo.h_RT_minus_s_R(Cache(T),eigen_h_RT_minus_s_R);
thermo.dh_RT_minus_s_R_dT(Cache(T),eigen_dh_RT_minus_s_R_dT);
kinetics.compute_mass_sources( T, eigen_molar_densities, eigen_h_RT_minus_s_R, eigen_omega_dot );
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testeigenA);
#endif
return_flag +=
vec_compare(eigen_R,R_mix,"eigen_R");
return_flag +=
vec_compare(eigen_molar_densities, molar_densities,
"eigen_molar_densities");
return_flag +=
vec_compare(eigen_h_RT_minus_s_R, h_RT_minus_s_R,
"eigen_h_RT_minus_s_R");
return_flag +=
vec_compare(eigen_dh_RT_minus_s_R_dT, dh_RT_minus_s_R_dT,
"eigen_dh_RT_minus_s_R_dT");
return_flag +=
vec_compare(eigen_omega_dot,omega_dot,"eigen_omega_dot");
}
{
typedef Eigen::Matrix<PairScalars,Eigen::Dynamic,1> SpeciesVecEigenType;
SpeciesVecEigenType eigen_Y(n_species,1);
Antioch::init_constant(eigen_Y, massfrac);
SpeciesVecEigenType eigen_molar_densities(n_species,1);
Antioch::init_constant(eigen_molar_densities, example);
SpeciesVecEigenType eigen_h_RT_minus_s_R(n_species,1);
Antioch::init_constant(eigen_h_RT_minus_s_R, example);
SpeciesVecEigenType eigen_dh_RT_minus_s_R_dT(n_species,1);
Antioch::init_constant(eigen_dh_RT_minus_s_R_dT, example);
SpeciesVecEigenType eigen_omega_dot(n_species,1);
Antioch::init_constant(eigen_omega_dot, example);
SpeciesVecEigenType eigen_domega_dot_dT(n_species,1);
Antioch::init_constant(eigen_domega_dot_dT, example);
// FIXME: What to do for domega_dot_drhos type?
#ifdef ANTIOCH_HAVE_GRVY
const std::string testeigenV = testname + "-eigenV";
gt.BeginTimer(testeigenV);
#endif
const PairScalars eigen_R = chem_mixture.R(eigen_Y);
chem_mixture.molar_densities(rho,eigen_Y,eigen_molar_densities);
thermo.h_RT_minus_s_R(Cache(T),eigen_h_RT_minus_s_R);
thermo.dh_RT_minus_s_R_dT(Cache(T),eigen_dh_RT_minus_s_R_dT);
kinetics.compute_mass_sources( T, eigen_molar_densities, eigen_h_RT_minus_s_R, eigen_omega_dot );
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testeigenV);
#endif
return_flag +=
vec_compare(eigen_R,R_mix,"eigen_R");
return_flag +=
vec_compare(eigen_molar_densities, molar_densities,
"eigen_molar_densities");
return_flag +=
vec_compare(eigen_h_RT_minus_s_R, h_RT_minus_s_R,
"eigen_h_RT_minus_s_R");
return_flag +=
vec_compare(eigen_dh_RT_minus_s_R_dT, dh_RT_minus_s_R_dT,
"eigen_dh_RT_minus_s_R_dT");
return_flag +=
vec_compare(eigen_omega_dot,omega_dot,"eigen_omega_dot");
}
#endif // ANTIOCH_HAVE_EIGEN
for( unsigned int s = 0; s < n_species; s++)
{
std::cout << std::scientific << std::setprecision(16)
<< "omega_dot(" << chem_mixture.chemical_species()[s]->species() << ") = "
<< omega_dot[s] << std::endl;
}
for( unsigned int s = 0; s < n_species; s++)
{
std::cout << std::scientific << std::setprecision(16)
<< "domega_dot_dT(" << chem_mixture.chemical_species()[s]->species() << ") = "
<< domega_dot_dT[s] << std::endl;
}
for( unsigned int s = 0; s < n_species; s++)
{
for( unsigned int t = 0; t < n_species; t++)
{
std::cout << std::scientific << std::setprecision(16)
<< "domega_dot_drhos(" << chem_mixture.chemical_species()[s]->species()
<< ", " << chem_mixture.chemical_species()[t]->species() << ") = "
<< domega_dot_drhos[s][t] << std::endl;
}
}
// Regression values for omega_dot
std::vector<PairScalars> omega_dot_reg(n_species,example);
// Regression values for domega_dot_drhos
std::vector<std::vector<PairScalars> > domega_dot_drhos_reg
(n_species, omega_dot); // omega_dot is the right size for an example
// Regression values for domega_dot_dT
std::vector<PairScalars> domega_dot_dT_reg(n_species, example);
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
omega_dot_reg[0][2*tuple ] = 9.1627505878744108e+04;
omega_dot_reg[1][2*tuple ] = -3.3462516012726480e+05;
omega_dot_reg[2][2*tuple ] = -2.1139750128059302e+05;
omega_dot_reg[3][2*tuple ] = 1.9782333785216609e+05;
omega_dot_reg[4][2*tuple ] = 2.5657181767694763e+05;
omega_dot_reg[0][2*tuple+1] = Scalar(omega_dot_reg[0][0]);
omega_dot_reg[1][2*tuple+1] = Scalar(omega_dot_reg[1][0]);
omega_dot_reg[2][2*tuple+1] = Scalar(omega_dot_reg[2][0]);
omega_dot_reg[3][2*tuple+1] = Scalar(omega_dot_reg[3][0]);
omega_dot_reg[4][2*tuple+1] = Scalar(omega_dot_reg[4][0]);
domega_dot_dT_reg[0][2*tuple ] = 1.8015258435766250e+02;
domega_dot_dT_reg[1][2*tuple ] = -5.2724938565430807e+02;
domega_dot_dT_reg[2][2*tuple ] = -3.0930274177637205e+02;
domega_dot_dT_reg[3][2*tuple ] = 3.7973350053870610e+02;
domega_dot_dT_reg[4][2*tuple ] = 2.7666604253431154e+02;
domega_dot_dT_reg[0][2*tuple+1] = Scalar(domega_dot_dT_reg[0][0]);
domega_dot_dT_reg[1][2*tuple+1] = Scalar(domega_dot_dT_reg[1][0]);
domega_dot_dT_reg[2][2*tuple+1] = Scalar(domega_dot_dT_reg[2][0]);
domega_dot_dT_reg[3][2*tuple+1] = Scalar(domega_dot_dT_reg[3][0]);
domega_dot_dT_reg[4][2*tuple+1] = Scalar(domega_dot_dT_reg[4][0]);
domega_dot_drhos_reg[0][0][2*tuple ] = 1.9677528466713775e+04;
domega_dot_drhos_reg[0][1][2*tuple ] = 1.7227676257862015e+04;
domega_dot_drhos_reg[0][2][2*tuple ] = 3.2160890543181915e+06;
domega_dot_drhos_reg[0][3][2*tuple ] = 1.4766530417926086e+05;
domega_dot_drhos_reg[0][4][2*tuple ] = 2.3225848421202623e+06;
domega_dot_drhos_reg[1][0][2*tuple ] = 8.8931540715994815e+03;
domega_dot_drhos_reg[1][1][2*tuple ] = -9.9561695971970223e+06;
domega_dot_drhos_reg[1][2][2*tuple ] = -9.8750240128648076e+06;
domega_dot_drhos_reg[1][3][2*tuple ] = 4.6145192628627969e+05;
domega_dot_drhos_reg[1][4][2*tuple ] = 8.3491261619680736e+03;
domega_dot_drhos_reg[2][0][2*tuple ] = -2.2422758857735978e+04;
domega_dot_drhos_reg[2][1][2*tuple ] = -4.3813526690025711e+06;
domega_dot_drhos_reg[2][2][2*tuple ] = -6.8345704383742884e+06;
domega_dot_drhos_reg[2][3][2*tuple ] = -5.4147327282847988e+05;
domega_dot_drhos_reg[2][4][2*tuple ] = -1.2268436930952054e+06;
domega_dot_drhos_reg[3][0][2*tuple ] = -1.2028768453121129e+04;
domega_dot_drhos_reg[3][1][2*tuple ] = 4.9714465900642881e+06;
domega_dot_drhos_reg[3][2][2*tuple ] = 5.7419784571182663e+06;
domega_dot_drhos_reg[3][3][2*tuple ] = -9.1126114233336027e+05;
domega_dot_drhos_reg[3][4][2*tuple ] = 1.2432112953400959e+06;
domega_dot_drhos_reg[4][0][2*tuple ] = 5.8808447725438464e+03;
domega_dot_drhos_reg[4][1][2*tuple ] = 9.3488479998774435e+06;
domega_dot_drhos_reg[4][2][2*tuple ] = 7.7515269398026383e+06;
domega_dot_drhos_reg[4][3][2*tuple ] = 8.4361718469629961e+05;
domega_dot_drhos_reg[4][4][2*tuple ] = -2.3473015705271205e+06;
for (unsigned int i = 0; i != 5; ++i)
for (unsigned int j = 0; j != 5; ++j)
domega_dot_drhos_reg[i][j][2*tuple+1] =
Scalar(domega_dot_drhos_reg[i][j][2*tuple ]);
}
return_flag +=
vec_compare(omega_dot, omega_dot_reg, "omega_dot");
return_flag +=
vec_compare(omega_dot_2, omega_dot_reg, "omega_dot_2");
return_flag +=
vec_compare(domega_dot_dT, domega_dot_dT_reg, "domega_dot_dT");
char vecname[] = "domega_dot_drho_0";
for (unsigned int i = 0; i != 5; ++i)
{
return_flag +=
vec_compare(domega_dot_drhos[i], domega_dot_drhos_reg[i], vecname);
// Should b=e safe to assume "1"+1 = "2" etc.
++vecname[16];
}
return return_flag;
}
int vectester(const PairScalars& example, const std::string& testname)
{
typedef typename Antioch::value_type<PairScalars>::type Scalar;
std::vector<Scalar> bin_ref_x,bin_ref_y;
make_reference(bin_ref_x,bin_ref_y);
Antioch::SigmaBinConverter<std::vector<Scalar> > bin;
const Scalar tol = std::numeric_limits<Scalar>::epsilon() * 10;
int return_flag = 0;
#ifdef ANTIOCH_HAVE_GRVY
gt.BeginTimer(testname);
#endif
// 2 * 2 cases:
// - custom inside ref, ref inside custom
// - custom beyond only min ref, custom beyond only max ref
for(unsigned int i = 0; i < 2; i++)
{
std::vector<PairScalars> bin_custom_x, exact_sol_y;
make_custom(i,example,bin_custom_x,exact_sol_y);
std::vector<PairScalars> bin_custom_y(bin_custom_x.size(),Antioch::zero_clone(bin_custom_x[0]));
bin.y_on_custom_grid(bin_ref_x,bin_ref_y,
bin_custom_x,bin_custom_y);
for(unsigned int il = 0; il < bin_custom_x.size() - 1; il++)
{
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
//tuple
Scalar dist = Antioch::if_else(exact_sol_y[il][2*tuple] < tol,
std::abs(bin_custom_y[il][2*tuple] - exact_sol_y[il][2*tuple]),
std::abs(bin_custom_y[il][2*tuple] - exact_sol_y[il][2*tuple])/exact_sol_y[il][2*tuple]);
if( dist > tol )
{
std::cout << std::scientific << std::setprecision(16)
<< "Error: Mismatch in bin values for " << testname << std::endl
<< "case (" << bin_custom_x[il][2*tuple] << ";" << bin_custom_x[il + 1][2*tuple] << ")" << std::endl
<< "bin = " << bin_custom_y[il][2*tuple] << std::endl
<< "bin_exact = " << exact_sol_y[il][2*tuple] << std::endl
<< "relative error = " << dist << std::endl
<< "tolerance = " << tol << std::endl;
return_flag = 1;
}
//tuple + 1
dist = Antioch::if_else(exact_sol_y[il][2*tuple + 1] < tol,
std::abs(bin_custom_y[il][2*tuple + 1] - exact_sol_y[il][2*tuple + 1]),
std::abs(bin_custom_y[il][2*tuple + 1] - exact_sol_y[il][2*tuple + 1])/exact_sol_y[il][2*tuple + 1]);
if( dist > tol )
{
std::cout << std::scientific << std::setprecision(16)
<< "Error: Mismatch in bin values for " << testname << std::endl
<< "case (" << bin_custom_x[il][2*tuple + 1] << ";" << bin_custom_x[il+1][2*tuple + 1] << ")" << std::endl
<< "bin = " << bin_custom_y[il][2*tuple + 1] << std::endl
<< "bin_exact = " << exact_sol_y[il][2*tuple + 1] << std::endl
<< "relative error = " << dist << std::endl
<< "tolerance = " << tol << std::endl;
return_flag = 1;
}
}
}
}
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testname);
#endif
return return_flag;
}
int vectester(const PairScalars& example, const std::string& testname)
{
typedef typename Antioch::value_type<PairScalars>::type Scalar;
std::vector<std::string> species_str_list;
const unsigned int n_species = 1;
species_str_list.reserve(n_species);
species_str_list.push_back( "N2" );
const Scalar LJ_depth_N2 = 97.53L;
const Scalar Z_298 = 4.0L;
Antioch::ChemicalMixture<Scalar> chem_mixture( species_str_list );
Antioch::StatMechThermodynamics<Scalar> thermo( chem_mixture );
Antioch::KineticsTheoryThermalConductivity<Antioch::StatMechThermodynamics<Scalar>, Scalar > k( thermo, Z_298, LJ_depth_N2);
// Construct from example to avoid resizing issues
PairScalars mu = example;
PairScalars dss = example;
PairScalars rho = example;
PairScalars T = example;
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
T[2*tuple] = 1500.1;
T[2*tuple+1] = 1600.1;
mu[2*tuple] = 3.14e-3;
mu[2*tuple+1] = 3.14e-3;
dss[2*tuple] = 5.23e-5;
dss[2*tuple+1] = 5.23e-5;
rho[2*tuple] = 1.4;
rho[2*tuple+1] = 1.4;
}
const Scalar k_exact0 = 3.19434291925996020233442116364270671873509961381739235964650684;
const Scalar k_exact1 = 3.2021908709042895344166123247634817043607657971633006497668;
int return_flag = 0;
#ifdef ANTIOCH_HAVE_GRVY
gt.BeginTimer(testname);
#endif
const PairScalars k_ps = k(0,mu,T,rho,dss);
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testname);
#endif
const Scalar tol = (std::numeric_limits<Scalar>::epsilon()*10 < 7e-17)?
7e-17:
std::numeric_limits<Scalar>::epsilon()*10;
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
return_flag = test_k( k_ps[2*tuple], k_exact0, tol ) || return_flag;
return_flag = test_k( k_ps[2*tuple+1], k_exact1, tol ) || return_flag;
}
return return_flag;
}
int vectester(const PairScalars& example, const std::string& testname)
{
typedef typename Antioch::value_type<PairScalars>::type Scalar;
const Scalar a = 3.14e-3L;
const Scalar b = 2.71e-2L;
const Scalar c = 42.0e-5L;
Antioch::BlottnerViscosity<Scalar> mu(a,b,c);
std::cout << mu << std::endl;
PairScalars T = example;
PairScalars mu_exact = example;
PairScalars mu_exact2 = example;
for (unsigned int tuple=0; tuple != ANTIOCH_N_TUPLES; ++tuple)
{
T[2*tuple] = 1521.2L;
T[2*tuple+1] = 1621.2L;
// bc gives
mu_exact[2*tuple] = 0.1444222341677025337305172031086891L;
mu_exact[2*tuple+1] = 0.1450979382180072302532592937776388L;
mu_exact2[2*tuple] = .1221724955488799960527696821225472L;
mu_exact2[2*tuple+1] = .1224428450807678499433510473203746L;
}
int return_flag = 0;
const Scalar tol = std::numeric_limits<Scalar>::epsilon() * 2;
#ifdef ANTIOCH_HAVE_GRVY
gt.BeginTimer(testname);
#endif
const PairScalars mu_T = mu(T);
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testname);
#endif
return_flag = test_viscosity( mu_T, mu_exact, tol, testname );
const Scalar a2 = 1e-3L;
const Scalar b2 = 2e-2L;
const Scalar c2 = 3e-5L;
mu.reset_coeffs( a2, b2, c2 );
#ifdef ANTIOCH_HAVE_GRVY
gt.BeginTimer(testname);
#endif
const PairScalars mu2_T = mu(T);
#ifdef ANTIOCH_HAVE_GRVY
gt.EndTimer(testname);
#endif
return_flag = test_viscosity( mu2_T, mu_exact2, tol, testname );
return return_flag;
}