operator_less_than.hpp

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#ifndef STAN_MATH_REV_CORE_OPERATOR_LESS_THAN_HPP
#define STAN_MATH_REV_CORE_OPERATOR_LESS_THAN_HPP
 
#include <stan/math/rev/core/var.hpp>
#include <stan/math/prim/meta.hpp>
 
namespace stan {
namespace math {
 
inline bool operator<(const var& a, const var& b) { return a.val() < b.val(); }
 
template <typename Arith, require_arithmetic_t<Arith>* = nullptr>
inline bool operator<(const var& a, Arith b) {
  return a.val() < b;
}
 
template <typename Arith, require_arithmetic_t<Arith>* = nullptr>
inline bool operator<(Arith a, const var& b) {
  return a < b.val();
}
 
}  // namespace math
}  // namespace stan
#endif