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Add explicit vec conversion #37

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Add explicit vec conversion #37

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cc80743
Fix vec constructors
GagaLP Jan 27, 2025
bf7fe2a
Add explicit conversion to vec
GagaLP Jan 27, 2025
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21 changes: 20 additions & 1 deletion include/simsycl/sycl/vec.hh
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,11 @@ template<typename T, typename DataT, int NumElements>
concept VecCompatible
= vec_like_num_elements<DataT, T>::value == 1 || vec_like_num_elements<DataT, T>::value == NumElements;

template<typename From, typename To>
concept implicitly_convertible = requires { std::is_convertible_v<From, To>; };
Comment on lines +72 to +73
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This appears unused?


template<typename From, typename To>
concept explicitly_convertible = requires { static_cast<To>(std::declval<From>()); };
Comment on lines +75 to +76
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Suggestion: explicitly_convertible_to


template<int... Is>
struct no_repeat_indices;
Expand Down Expand Up @@ -261,6 +266,13 @@ class swizzled_vec {
return m_elems[indices[0]];
}

template<typename T>
explicit operator T() const
requires(num_elements == 1 && detail::explicitly_convertible<value_type, T>)
{
return m_elems[indices[0]];
}

static constexpr size_t byte_size() noexcept { return sycl::vec<value_type, num_elements>::byte_size(); }

static constexpr size_t size() noexcept { return num_elements; }
Expand Down Expand Up @@ -515,7 +527,7 @@ class alignas(detail::vec_alignment_v<DataT, NumElements>) vec {

vec() = default;

explicit constexpr vec(const DataT &arg) {
explicit(num_elements > 1) constexpr vec(const DataT &arg) {
for(int i = 0; i < NumElements; ++i) { m_elems[i] = arg; }
}

Expand Down Expand Up @@ -548,6 +560,13 @@ class alignas(detail::vec_alignment_v<DataT, NumElements>) vec {
return m_elems[0];
}

template<typename T>
explicit operator T() const
requires(NumElements == 1 && detail::explicitly_convertible<DataT, T>)
{
return m_elems[0];
}

static constexpr size_t byte_size() noexcept { return sizeof m_elems; }

static constexpr size_t size() noexcept { return NumElements; }
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