std::experimental::simd_abi::max_fixed_size
From cppreference.com
| Defined in header <experimental/simd>
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template< class T >
constexpr int max_fixed_size = /*implementation-defined*/;
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(parallelism TS v2) | |
The value of max_fixed_size<T> declares that an instance of simd<T, fixed_size<N>> with N <= max_fixed_size<T> is supported by the implementation. The value of max_fixed_size<T> is at least 32.
Notes
It is unspecified whether an implementation supports simd<T, fixed_size<N>> with N > max_fixed_size<T>. The value of max_fixed_size<T> may depend on compiler flags and may change between different compiler versions.
Example
Run this code
#include <cstdint>
#include <experimental/simd>
#include <iostream>
namespace stq = std::experimental;
int main()
{
std::cout << stq::simd_abi::max_fixed_size<std::uint8_t> << ' ';
std::cout << stq::simd_abi::max_fixed_size<std::uint64_t> << ' ';
std::cout << stq::simd_abi::max_fixed_size<float> << ' ';
std::cout << stq::simd_abi::max_fixed_size<long double> << '\n';
}
Possible output:
32 32 32 32