std::experimental::simd<T,Abi>::operator++, std::experimental::simd<T,Abi>::operator--

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Diagnostics library

Memory management library

Metaprogramming library (C++11)

General utilities library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library (C++17)

Concurrency support library (C++11)

Execution control library (C++26)

Technical specifications

Symbols index

External libraries

 

Experimental

Technical Specification

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals TS v2)

Library fundamentals 3 (library fundamentals TS v3)

Extensions for parallelism (parallelism TS)

Extensions for parallelism 2 (parallelism TS v2)

Extensions for concurrency (concurrency TS)

Extensions for concurrency 2 (concurrency TS v2)

Concepts (concepts TS)

Ranges (ranges TS)

Reflection (reflection TS)

Mathematical special functions (special functions TR)

Experimental Non-TS

Pattern Matching

Linear Algebra

std::execution

Contracts

2D Graphics

 

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
Task blocks
task_block
task_cancelled_exception
define_task_blockdefine_task_block_restore_thread
Data-parallel vectors

 

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<

 

simd& operator++() noexcept;	(1)	(parallelism TS v2)
simd operator++( int ) noexcept;	(2)	(parallelism TS v2)
simd& operator--() noexcept;	(3)	(parallelism TS v2)
simd operator--( int ) noexcept;	(4)	(parallelism TS v2)

Applies the increment or decrement operator on each element of the simd.

1) Increments all values in the simd by 1 and returns a reference to itself.

2) Increments all values in the simd by 1 and returns a copy of itself before the operation.

3) Decrements all values in the simd by 1 and returns a reference to itself.

4) Decrements all values in the simd by 1 and returns a copy of itself before the operation.

Example

Run this code

#include <cstddef>
#include <experimental/simd>
#include <iostream>
namespace stdx = std::experimental;
 
void print(auto rem, auto const& a)
{
    std::cout << rem << ": ";
    for (std::size_t i{}; i != std::size(a); ++i)
        std::cout << a[i] << ' ';
    std::cout << '\n';
}
 
int main()
{
    stdx::native_simd<int> p = -2;
    print('p', p);
 
    ++p;
    print('p', p);
 
    auto q = p--;
    print('p', p);
    print('q', q);
}

Possible output:

p: -2 -2 -2 -2
p: -1 -1 -1 -1 
p: -2 -2 -2 -2
q: -1 -1 -1 -1

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