5 Quantities and units library [quantities]

5.4 Reference [qty.ref]

5.4.2 Dimension [qty.dim]

5.4.2.4 Operations [qty.dim.ops]

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namespace mp_units { struct dimension-interface { // exposition only template<Dimension Lhs, Dimension Rhs> friend consteval Dimension auto operator*(Lhs, Rhs); template<Dimension Lhs, Dimension Rhs> friend consteval Dimension auto operator/(Lhs, Rhs); template<Dimension Lhs, Dimension Rhs> friend consteval bool operator==(Lhs, Rhs); }; }
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template<Dimension Lhs, Dimension Rhs> friend consteval Dimension auto operator*(Lhs, Rhs);
1
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Returns: expr-multiply<derived_dimension, struct dimension_one>(Lhs{}, Rhs{}).
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template<Dimension Lhs, Dimension Rhs> friend consteval Dimension auto operator/(Lhs, Rhs);
2
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Returns: expr-divide<derived_dimension, struct dimension_one>(Lhs{}, Rhs{}).
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template<Dimension Lhs, Dimension Rhs> friend consteval bool operator==(Lhs, Rhs);
3
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Returns: std​::​is_same_v<Lhs, Rhs>.
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consteval Dimension auto inverse(Dimension auto d);
4
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Returns: dimension_one / d.
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template<std::intmax_t Num, std::intmax_t Den = 1, Dimension D> requires(Den != 0) consteval Dimension auto pow(D d);
5
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Returns: expr-pow<Num, Den, derived_dimension, struct dimension_one>(d).
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consteval Dimension auto sqrt(Dimension auto d);
6
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Returns: pow<1, 2>(d).
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consteval Dimension auto cbrt(Dimension auto d);
7
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Returns: pow<1, 3>(d).