void _PropsSI_initialize(const std::string &backend,
const std::vector<std::string> &fluid_names,
const std::vector<double> &z,
shared_ptr<AbstractState> &State){
if (fluid_names.empty()){throw ValueError("fluid_names cannot be empty");}
std::vector<double> fractions(1, 1.0); // Default to one component, unity fraction
const std::vector<double> *fractions_ptr = NULL; // Pointer to the array to be used;
if (fluid_names.size() > 1){
// Set the pointer - we are going to use the supplied fractions; they must be provided
fractions_ptr = &z;
// Reset the state
State.reset(AbstractState::factory(backend, fluid_names));
}
else if (fluid_names.size() == 1){
if (has_fractions_in_string(fluid_names[0]) || has_solution_concentration(fluid_names[0])){
// Extract fractions from the string
std::string fluid_string = extract_fractions(fluid_names[0], fractions);
// Set the pointer - we are going to use the extracted fractions
fractions_ptr = &fractions;
// Reset the state
State.reset(AbstractState::factory(backend, fluid_string));
}
else{
if (z.empty()){
// Set the pointer - we are going to use the default fractions
fractions_ptr = &fractions;
}
else{
// Set the pointer - we are going to use the provided fractions
fractions_ptr = &z;
}
// Reset the state
State.reset(AbstractState::factory(backend, fluid_names));
}
}
else { // The only path where fractions_ptr stays NULL
throw ValueError("fractions_ptr is NULL");
}
if (!State->available_in_high_level()){
throw ValueError("This AbstractState derived class cannot be used in the high-level interface; see www.coolprop.org/dev/coolprop/LowLevelAPI.html");
}
// Set the fraction for the state
if (State->using_mole_fractions()){
// If a predefined mixture or a pure fluid, the fractions will already be set
if (State->get_mole_fractions().empty()){
State->set_mole_fractions(*fractions_ptr);
}
} else if (State->using_mass_fractions()){
State->set_mass_fractions(*fractions_ptr);
} else if (State->using_volu_fractions()){
State->set_volu_fractions(*fractions_ptr);
} else {
if (get_debug_level()>50) std::cout << format("%s:%d: _PropsSI, could not set composition to %s, defaulting to mole fraction.\n",__FILE__,__LINE__, vec_to_string(z).c_str()).c_str();
}
}
double PropsSI(const std::string &Output, const std::string &Name1, double Prop1, const std::string &Name2, double Prop2, const std::string &Ref)
{
#if !defined(NO_ERROR_CATCHING)
try{
#endif
// BEGIN OF TRY
// Here is the real code that is inside the try block
std::string backend, fluid;
extract_backend(Ref, backend, fluid);
std::vector<double> fractions(1, 1.0);
// extract_fractions checks for has_fractions_in_string / has_solution_concentration; no need to double check
std::string fluid_string = extract_fractions(fluid, fractions);
std::vector<std::vector<double> > IO;
_PropsSImulti(strsplit(Output,'&'), Name1, std::vector<double>(1, Prop1), Name2, std::vector<double>(1, Prop2), backend, strsplit(fluid_string, '&'), fractions, IO);
if (IO.empty()){ throw ValueError(get_global_param_string("errstring").c_str()); }
if (IO.size()!= 1 || IO[0].size() != 1){ throw ValueError(format("output should be 1x1; error was %s", get_global_param_string("errstring").c_str())); }
double val = IO[0][0];
if (get_debug_level() > 1){ std::cout << format("_PropsSI will return %g",val) << std::endl; }
return val;
// END OF TRY
#if !defined(NO_ERROR_CATCHING)
}
catch(const std::exception& e){
set_error_string(e.what() + format(" : PropsSI(\"%s\",\"%s\",%0.10g,\"%s\",%0.10g,\"%s\")",Output.c_str(),Name1.c_str(), Prop1, Name2.c_str(), Prop2, Ref.c_str()));
#if defined (PROPSSI_ERROR_STDOUT)
std::cout << e.what() << std::endl;
#endif
if (get_debug_level() > 1){std::cout << e.what() << std::endl;}
return _HUGE;
}
catch(...){
return _HUGE;
}
#endif
}
// Internal function to do the actual calculations, make this a wrapped function so
// that error bubbling can be done properly
double _PropsSI(const std::string &Output, const std::string &Name1, double Prop1, const std::string &Name2, double Prop2, const std::string &backend, const std::string &Ref, const std::vector<double> &z)
{
parameters iOutput = iundefined_parameter;
parameters iOf = iundefined_parameter, iWrt = iundefined_parameter, iConstant = iundefined_parameter,
iOf1 = iundefined_parameter, iWrt1 = iundefined_parameter, iConstant1 = iundefined_parameter,
iWrt2 = iundefined_parameter, iConstant2 = iundefined_parameter;
double x1, x2;
if (get_debug_level()>5){
std::cout << format("%s:%d: _PropsSI(%s,%s,%g,%s,%g,%s,%s)\n",__FILE__,__LINE__,Output.c_str(),Name1.c_str(),Prop1,Name2.c_str(),Prop2,backend.c_str(),Ref.c_str(), vec_to_string(z).c_str()).c_str();
}
// The state we are going to use
shared_ptr<AbstractState> State;
// If the fractions of the components have been encoded in the string, extract them
// If they have not, this function does nothing
std::vector<double> fractions;
if (z.empty())
{
// Make a one-element vector
fractions = std::vector<double>(1, 1);
}
else{
// Make a copy
fractions = z;
}
std::string fluid_string = extract_fractions(Ref, fractions);
// We are going to let the factory function load the state
State.reset(AbstractState::factory(backend, fluid_string));
// First check if it is a trivial input (critical/max parameters for instance)
if (is_valid_parameter(Output, iOutput) && is_trivial_parameter(iOutput))
{
double val = State->trivial_keyed_output(iOutput);
return val;
}
long iName1 = get_parameter_index(Name1);
long iName2 = get_parameter_index(Name2);
if (State->using_mole_fractions()){
State->set_mole_fractions(fractions);
} else if (State->using_mass_fractions()){
State->set_mass_fractions(fractions);
} else if (State->using_volu_fractions()){
State->set_volu_fractions(fractions);
} else {
if (get_debug_level()>50) std::cout << format("%s:%d: _PropsSI, could not set composition to %s, defaulting to mole fraction.\n",__FILE__,__LINE__, vec_to_string(z).c_str()).c_str();
}
// Obtain the input pair
CoolProp::input_pairs pair = generate_update_pair(iName1, Prop1, iName2, Prop2, x1, x2);
// Update the state
State->update(pair, x1, x2);
if (iOutput != iundefined_parameter){
// Get the desired output
double val = State->keyed_output(iOutput);
// Return the value
return val;
}
else if (is_valid_first_derivative(Output, iOf, iWrt, iConstant)){
// Return the desired output
double val = State->first_partial_deriv(iOf, iWrt, iConstant);
// Return the value
return val;
}
else if (is_valid_second_derivative(Output, iOf1, iWrt1, iConstant1, iWrt2, iConstant2)){
// Return the desired output
double val = State->second_partial_deriv(iOf1, iWrt1, iConstant1, iWrt2, iConstant2);
// Return the value
return val;
}
else{
throw ValueError(format("Output [%s] is not a parameter or a string representation of a derivative",Output.c_str()).c_str());
}
}
