[SIMD] Get rid of IsStandard and all specializations.
- Jun 06, 2018
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Jö Fahlke authored
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Jö Fahlke authored
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Jö Fahlke authored
A non-const class rvalue is, in fact, assignable, unless you take special care. In the tests we try to apply each operator to `Scalar<V>` in an unevaluated context, and if that succeeds we require that it works for `V` analogously to how it does for `Scalar<V>`. That heuristic fails if `Scalar<V>` is a class (such as `std::complex`), because assignment works even to rvalues (usually), but trying to apply the assignment to a `V` rvalue and then capturing and examining the result will lead to undefined behaviour.
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