Difference between revisions of "cpp/experimental/simd/simd/operator mem arith2"
From cppreference.com
< cpp | experimental | simd | simd
(Document simd unary operators) |
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| − | {{cpp/experimental/simd/title|operator! | + | {{cpp/experimental/simd/title|operator!,~,+,-}} |
{{cpp/experimental/simd/simd/navbar}} | {{cpp/experimental/simd/simd/navbar}} | ||
{{dcl begin}} | {{dcl begin}} | ||
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{{dcl end}} | {{dcl end}} | ||
| − | Applies the given unary operator on each element of the {{ | + | Applies the given unary operator on each element of the {{ltt|cpp/experimental/simd/simd}}. |
@1@ Returns a {{ltt|cpp/experimental/simd/simd_mask|simd_mask<T, Abi>}} where the i-th element equals {{tt|!operator[](i)}} {{simd_for_all_i}}. | @1@ Returns a {{ltt|cpp/experimental/simd/simd_mask|simd_mask<T, Abi>}} where the i-th element equals {{tt|!operator[](i)}} {{simd_for_all_i}}. | ||
@2@ Returns a {{tt|simd}} where each bit is the inverse of the corresponding bit in {{tt|*this}}. {{cpp/enable_if|{{tt|T}} is an integral type}}. | @2@ Returns a {{tt|simd}} where each bit is the inverse of the corresponding bit in {{tt|*this}}. {{cpp/enable_if|{{tt|T}} is an integral type}}. | ||
Revision as of 12:36, 20 March 2023
| mask_type operator!() const noexcept; |
(1) | (parallelism TS v2) |
| simd operator~() const noexcept; |
(2) | (parallelism TS v2) |
| simd operator+() const noexcept; |
(3) | (parallelism TS v2) |
| simd operator-() const noexcept; |
(4) | (parallelism TS v2) |
Applies the given unary operator on each element of the simd.
1) Returns a simd_mask<T, Abi> where the i-th element equals
!operator[](i) for all i in the range of [0, size()).2) Returns a
simd where each bit is the inverse of the corresponding bit in *this. This overload participates in overload resolution only if T is an integral type.3) Returns a copy of itself.
4) Returns a
simd where the i-th element is initialized to -operator[](i) for all i in the range of [0, size()).Example
Run this code
#include <experimental/simd> #include <iostream> namespace stdx = std::experimental; void print(const stdx::native_simd_mask<int> x) { for (std::size_t i = 0; i < x.size(); ++i) { std::cout << std::boolalpha << x[i] << ' '; } std::cout << std::endl; } void print(const stdx::native_simd<int> x) { for (std::size_t i = 0; i < x.size(); ++i) { std::cout << x[i] << ' '; } std::cout << std::endl; } int main() { const stdx::native_simd<int> a([](int i) { return i; }); print(!a); print(~a); print(+a); print(-a); return 0; }
Possible output:
true false false false false false false false false false false false false false false false -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15
