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fix: exp() has sense only for dimensionless quantities

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Resolves #178
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Mateusz Pusz
2020-12-16 17:57:04 +01:00
parent ff22bae04e
commit a82a9d8fe2
1 changed files with 5 additions and 4 deletions
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9
src/include/units/math.h
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@@ -74,14 +74,15 @@ template<Quantity Q>
/** /**
* @brief Computes Euler's raised to the given power * @brief Computes Euler's raised to the given power
* *
* @note Such an operation has sense only for a dimensionless quantity.
*
* @param q Quantity being the base of the operation * @param q Quantity being the base of the operation
* @return Quantity The value of the same quantity type * @return Quantity The value of the same quantity type
*/ */
template<typename D, typename U, typename Rep> template<typename U, typename Rep>
[[nodiscard]] inline quantity<D, U, Rep> exp(const quantity<D, U, Rep>& q) [[nodiscard]] inline dimensionless<U, Rep> exp(const dimensionless<U, Rep>& q)
{ {
using coherent_unit = dimension_unit<D>; return quantity_cast<U>(dimensionless<one, Rep>(std::exp(quantity_cast<one>(q).count())));
return quantity_cast<U>(quantity<D, coherent_unit, Rep>(std::exp(quantity_cast<coherent_unit>(q).count())));
} }
/** /**