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Struct dimensionless_type

boost::units::dimensionless_type — Dimension lists in which all exponents resolve to zero reduce to dimensionless_type.


// In header: <boost/units/dimensionless_type.hpp>

struct dimensionless_type {
  // types
  typedef dimensionless_type type;
  typedef unspecified        tag; 
  typedef mpl::long_< 0 >    size;