NAME¶

std::experimental::simd_cast,std::experimental::static_simd_cast - std::experimental::simd_cast,std::experimental::static_simd_cast

Synopsis¶

Defined in header <experimental/simd>
template< class V, class T, class Abi > (1) (parallelism TS v2)
/*see below*/ simd_cast( const simd<T, Abi>& v ) noexcept;
template< class V, class T, class Abi >
/*see below*/ static_simd_cast( const simd<T, Abi>& v ) (2) (parallelism TS v2)
noexcept;

Cast a simd object to another simd object. If V is T, returns simd<T, Abi>;
otherwise, if V is a scalar type, returns simd<V, simd_abi::fixed_size<simd<T,
Abi>::size()>>. Otherwise, V must be a simd type, and the function returns V.

1) This function does not participate in overloading resolution unless
* every possible value of the input element can be represented with the output
element,
* either is_simd_v<V> is false, or V::size() is simd<T, Abi>::size().
2) This function does not participate in overloading resolution unless either
is_simd_v<V> is false, or V::size() is simd<T, Abi>::size().

Parameters¶

v - the input simd object

Return value¶

A simd object with the i-th element initialized to static_cast<To>(v[i]), where To
is the output element type as specified.

Notes¶

The TS specification is missing simd_cast and static_simd_cast overloads for
simd_mask. The libstdc++ implementation provides the missing overloads in the
std::experimental::__proposed namespace. If you already use the

namespace stdx = std::experimental;

shortcut, you might be interested to use

namespace stdx {
using namespace std::experimental;
using namespace std::experimental::__proposed;
}

instead. Alternatively, libstdc++ implements a __cvt() member function in simd_mask,
which allows implicit conversion of the mask. See also:
https://github.com/VcDevel/std-simd/issues/41

Example¶

This section is incomplete
Reason: no example

Category:¶

* Todo no example