std::experimental::simd

 

C++

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Feature test macros (C++20)

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Concepts library (C++20)

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Technical specifications

Symbols index

External libraries

 

Technical specifications

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)

 

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<

 

Defined in header <experimental/simd>
template< class T, class Abi = simd_abi::compatible<T> > class simd;		(parallelism TS v2)

The class template simd is a data-parallel type. The width of a given simd instantiation is a constant expression, determined by the template parameters.

An ABI tag is a type in the simd_abi namespace that indicates a choice of size and binary representation for objects of data-parallel type.

Template parameters

T	-	element type; an arithmetic type other than bool
Abi	-	tag type used to determine the number of elements and storage

Helper alias templates

template< class T, int N > using fixed_size_simd = std::experimental::simd<T, std::experimental::simd_abi::fixed_size<N>>;
template< class T > using native_simd = std::experimental::simd<T, std::experimental::simd_abi::native<T>>;

Member types

Member type	Definition
value_type	T
reference	implementation-defined
mask_type	simd_mask<T, Abi>
abi_type	Abi

Member functions

(constructor) (parallelism TS v2)	constructs a simd object (public member function)
copy_from (parallelism TS v2)	loads simd elements from contiguous memory (public member function)
copy_to (parallelism TS v2)	stores simd elements to contiguous memory (public member function)
operator[] (parallelism TS v2)	accesses specified element (public member function)
operator++ operator-- (parallelism TS v2)	element-wise increment and decrement (public member function)
operator! operator~ operator+ operator- (parallelism TS v2)	element-wise unary operators (public member function)
size [static] (parallelism TS v2)	returns the width / number of elements (public static member function)

Non-member functions

operator+ operator- operator* operator/ operator% operator& operator| operator^ operator<< operator>> (parallelism TS v2)	element-wise binary operators (function)
operator+= operator-= operator*= operator/= operator%= operator&= operator|= operator^= operator<<= operator>>= (parallelism TS v2)	element-wise compound binary operators (function)
operator== operator!= operator>= operator<= operator> operator< (parallelism TS v2)	element-wise relational operators (function)

See also

simd_mask (parallelism TS v2)	data-parallel type with the element type bool (class template)
valarray	numeric arrays, array masks and array slices (class template)