std::experimental::simd<T,Abi>::operator==,!=,<,<=,>,>=

 

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Extensions for parallelism v2

Parallel exceptions
exception_list
Additional execution policies
execution::vector_policy	execution::unsequenced_policy
Algorithms
induction reductionreduction_plusreduction_minusreduction_multiplies	reduction_bit_andreduction_bit_orreduction_bit_xorreduction_minreduction_max	for_loopfor_loop_stridedfor_loop_nfor_loop_n_strided
execution::no_vec
execution::ordered_update_t
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define_task_blockdefine_task_block_restore_thread
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SIMD library

Main classes
simd	simd_mask
ABI tags
simd_abi::scalar simd_abi::fixed_size	simd_abi::native simd_abi::compatible	simd_abi::max_fixed_size simd_abi::deduce
Alignment tags
element_aligned_tagelement_aligned	vector_aligned_tagvector_aligned	overaligned_tagoveraligned
Where expression
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

 

std::experimental::simd

Member functions
simd copy_from copy_to size	operator!operator~operator+operator-	operator[] operator++operator--
Non-member functions
operator+operator-operator*operator/operator%operator&operator|operator^operator<<operator>>	operator+=operator-=operator*=operator/=operator%=operator&=operator|=operator^=operator<<=operator>>=	operator==operator!=operator>=operator<=operator>operator<

 

friend simd_mask operator==( const simd& lhs, const simd& rhs ) noexcept;	(1)	(parallelism TS v2)
friend simd_mask operator!=( const simd& lhs, const simd& rhs ) noexcept;	(2)	(parallelism TS v2)
friend simd_mask operator<( const simd& lhs, const simd& rhs ) noexcept;	(3)	(parallelism TS v2)
friend simd_mask operator<=( const simd& lhs, const simd& rhs ) noexcept;	(4)	(parallelism TS v2)
friend simd_mask operator>( const simd& lhs, const simd& rhs ) noexcept;	(5)	(parallelism TS v2)
friend simd_mask operator>=( const simd& lhs, const simd& rhs ) noexcept;	(6)	(parallelism TS v2)

Applies the given comparison element-wise to each corresponding element of the operands. Returns a simd_mask such that for all i in the range of [0, size()) the i^th element equals:

1) lhs[i] == rhs[i].

2) lhs[i] != rhs[i].

3) lhs[i] < rhs[i].

4) lhs[i] <= rhs[i].

5) lhs[i] > rhs[i].

6) lhs[i] >= rhs[i].

Parameters

lhs	-	left operands
rhs	-	right operands

Example

Run this code

#include <cassert>
#include <iostream>
#include <initializer_list>
#include <iterator>

#include <experimental/simd>
namespace stdx = std::experimental;

int main()
{
    using V = stdx::fixed_size_simd<int, 4>;
    using M = stdx::fixed_size_simd_mask<int, 4>;

    auto assert_equivalence = [](M&& x, std::initializer_list<int>&& y)
    {
        for (decltype(M::size()) i{}; i != M::size(); ++i)
            assert(x[i] == std::cbegin(y)[i]);
    };

    V a{2}, b, c{3};
    b[0] = 1, b[1] = 2, b[2] = 3, b[3] = 4;

    // a == {2, 2, 2, 2}
    // b == {1, 2, 3, 4}
    // c == {3, 3, 3, 3}

    assert_equivalence(a == a, {1, 1, 1, 1});
    assert_equivalence(a == b, {0, 1, 0, 0});
    assert_equivalence(b == c, {0, 0, 1, 0});
    assert_equivalence(a == c, {0, 0, 0, 0});

    assert_equivalence(a != a, {0, 0, 0, 0});
    assert_equivalence(a != b, {1, 0, 1, 1});
    assert_equivalence(b != c, {1, 1, 0, 1});
    assert_equivalence(a != c, {1, 1, 1, 1});

    assert_equivalence(a < a, {0, 0, 0, 0});
    assert_equivalence(a < b, {0, 0, 1, 1});
    assert_equivalence(b < c, {1, 1, 0, 0});
    assert_equivalence(a < c, {1, 1, 1, 1});
}

See also

all_ofany_ofnone_ofsome_of (parallelism TS v2)	reductions of simd_mask to bool (function template)
popcount (parallelism TS v2)	reduction of simd_mask to the number of true values (function template)
find_first_setfind_last_set (parallelism TS v2)	reductions of simd_mask to the index of the first or last true value (function template)
simd_mask (parallelism TS v2)	data-parallel type with the element type bool (class template)