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DESIGN doc updated

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Mateusz Pusz
2020-01-31 17:02:52 +01:00
parent 645570ff57
commit 9cdc3e1ad2
1 changed files with 5 additions and 5 deletions
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doc/DESIGN.md
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@@ -237,9 +237,9 @@ struct dim_luminous_intensity : base_dimension<"J", candela> {};
} }
``` ```
All other physical dimensions are derived from those. All other derived quantities of SI are composed from those.
There are two reasons why `base_dimension` gets a unit as its template parameter. First, the There are two reasons why a `base_dimension` gets a unit as its template parameter. First, the
base unit is needed for the text output of unnamed derived units. Second, there is more than base unit is needed for the text output of unnamed derived units. Second, there is more than
one system of physical units. For example CGS definitions look as follows: one system of physical units. For example CGS definitions look as follows:
@@ -293,11 +293,11 @@ Exponents are implemented with `exp` class template that provides an information
dimension and its (possibly fractional) exponent in a derived dimension. dimension and its (possibly fractional) exponent in a derived dimension.
```cpp ```cpp
template<Dimension Dim, int Num, int Den = 1> template<Dimension Dim, std::intmax_t Num, std::intmax_t Den = 1>
struct exp { struct exp {
using dimension = Dim; using dimension = Dim;
static constexpr int num = Num; static constexpr std::intmax_t num = Num;
static constexpr int den = Den; static constexpr std::intmax_t den = Den;
}; };
``` ```