std::experimental::all_of, std::experimental::any_of, std::experimental::none_of, std::experimental::some_of

 

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Extensions for parallelism v2

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exception_list
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execution::vector_policy	execution::unsequenced_policy
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induction reductionreduction_plusreduction_minusreduction_multiplies	reduction_bit_andreduction_bit_orreduction_bit_xorreduction_minreduction_max	for_loopfor_loop_stridedfor_loop_nfor_loop_n_strided
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SIMD library

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simd	simd_mask
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simd_abi::scalar simd_abi::fixed_size	simd_abi::native simd_abi::compatible	simd_abi::max_fixed_size simd_abi::deduce
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element_aligned_tagelement_aligned	vector_aligned_tagvector_aligned	overaligned_tagoveraligned
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where	where_expression	const_where_expression
Casts
simd_caststatic_simd_cast	to_fixed_sizeto_compatibleto_native	splitsplit_by concat
Algorithms
min max	minmax clamp
Reduction
reducehminhmax
Mask reduction
all_ofany_ofnone_ofsome_of	popcount find_first_setfind_last_set
Traits
is_simdis_simd_mask is_abi_tag is_simd_flag_type	simd_size memory_alignment rebind_simdresize_simd
Math functions

 

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

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
    );
}

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