NAME¶

std::experimental::all_of,std::experimental::any_of,std::experimental::none_of, - std::experimental::all_of,std::experimental::any_of,std::experimental::none_of,

Synopsis¶

Defined in header <experimental/simd>
template< class T, class Abi > (1) (parallelism TS v2)
bool all_of( const simd_mask<T, Abi>& k );
template< class T, class Abi > (2) (parallelism TS v2)
bool any_of( const simd_mask<T, Abi>& k );
template< class T, class Abi > (3) (parallelism TS v2)
bool none_of( const simd_mask<T, Abi>& k );
template< class T, class Abi > (4) (parallelism TS v2)
bool some_of( const simd_mask<T, Abi>& k );

1) Returns true if all values in k are true.
2) Returns true if at least one value in k is true.
3) Returns true if all values in k are false.
4) Returns true if at least one value in k is true but not all values in k are true.

Parameters¶

k - the simd_mask to apply the reduction to

Return value¶

The boolean result of the horizontal reduction.

Example¶

// Run this code

#include <cassert>
#include <experimental/simd>

namespace stq = std::experimental;

int main()
{
using mask = stq::fixed_size_simd_mask<int, 4>;

mask mask1{false}; // = {0, 0, 0, 0}
assert
(
stq::none_of(mask1) == true &&
stq::any_of(mask1) == false &&
stq::some_of(mask1) == false &&
stq::all_of(mask1) == false
);

mask mask2{true}; // = {1, 1, 1, 1}
assert
(
stq::none_of(mask2) == false &&
stq::any_of(mask2) == true &&
stq::some_of(mask2) == false &&
stq::all_of(mask2) == true
);

mask mask3{true};
mask3[0] = mask3[1] = false; // mask3 = {0, 0, 1, 1}
assert
(
stq::none_of(mask3) == false &&
stq::any_of(mask3) == true &&
stq::some_of(mask3) == true &&
stq::all_of(mask3) == false
);
}