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81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
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#ifndef Hadrons_MScalarSUN_Utils_hpp_
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#define Hadrons_MScalarSUN_Utils_hpp_
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#include <Grid/Hadrons/Global.hpp>
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#include <Grid/Hadrons/Module.hpp>
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BEGIN_HADRONS_NAMESPACE
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BEGIN_MODULE_NAMESPACE(MScalarSUN)
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GRID_SERIALIZABLE_ENUM(DiffType, undef, forward, 1, backward, 2, central, 3);
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template <typename Field>
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inline void dmu(Field &out, const Field &in, const unsigned int mu, const DiffType type)
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{
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auto & env = Environment::getInstance();
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if (mu >= env.getNd())
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{
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HADRON_ERROR(Range, "Derivative direction out of range");
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}
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switch(type)
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{
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case DiffType::backward:
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out = in - Cshift(in, mu, -1);
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break;
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case DiffType::forward:
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out = Cshift(in, mu, 1) - in;
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break;
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case DiffType::central:
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out = 0.5*(Cshift(in, mu, 1) - Cshift(in, mu, -1));
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break;
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default:
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HADRON_ERROR(Argument, "Derivative type invalid");
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break;
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}
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}
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template <typename Field>
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inline void dmuAcc(Field &out, const Field &in, const unsigned int mu, const DiffType type)
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{
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auto & env = Environment::getInstance();
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if (mu >= env.getNd())
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{
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HADRON_ERROR(Range, "Derivative direction out of range");
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}
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switch(type)
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{
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case DiffType::backward:
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out += in - Cshift(in, mu, -1);
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break;
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case DiffType::forward:
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out += Cshift(in, mu, 1) - in;
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break;
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case DiffType::central:
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out += 0.5*(Cshift(in, mu, 1) - Cshift(in, mu, -1));
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break;
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default:
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HADRON_ERROR(Argument, "Derivative type invalid");
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break;
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}
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}
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inline std::string varName(const std::string name, const unsigned int mu)
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{
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return name + "_" + std::to_string(mu);
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}
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inline std::string varName(const std::string name, const unsigned int mu,
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const unsigned int nu)
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{
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return name + "_" + std::to_string(mu) + "_" + std::to_string(nu);
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}
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END_MODULE_NAMESPACE
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END_HADRONS_NAMESPACE
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#endif // Hadrons_MScalarSUN_Utils_hpp_
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