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Work around Core Issue 2174 #177

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merged 2 commits into from
Oct 10, 2023
Merged

Work around Core Issue 2174 #177

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e4f112c
Do not use deduced return type for in-class non-template friend funct…
matthew-reynolds Oct 2, 2023
8717c10
Merge branch 'main' into matthew-reynolds/non-template-friend-functio…
chiphogg Oct 10, 2023
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6 changes: 4 additions & 2 deletions au/quantity.hh
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Original file line number Diff line number Diff line change
Expand Up @@ -307,10 +307,12 @@ class Quantity {
friend constexpr bool operator>=(Quantity a, Quantity b) { return a.value_ >= b.value_; }

// Addition and subtraction for like quantities.
friend constexpr auto operator+(Quantity a, Quantity b) {
friend constexpr Quantity<UnitT, decltype(std::declval<RepT>() + std::declval<RepT>())>
operator+(Quantity a, Quantity b) {
return make_quantity<UnitT>(a.value_ + b.value_);
}
friend constexpr auto operator-(Quantity a, Quantity b) {
friend constexpr Quantity<UnitT, decltype(std::declval<RepT>() - std::declval<RepT>())>
operator-(Quantity a, Quantity b) {
return make_quantity<UnitT>(a.value_ - b.value_);
}

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