batch¶

template <class T, class A>

class xsimd::batch¶

batch of integer or floating point values.

Abstract representation of an SIMD register for floating point or integral value.

Template Parameters

T: the type of the underlying values.
A: the architecture this batch is tied too.

Inherits from types::simd_register< T, A >, xsimd::types::integral_only_operators< T, A >

Public Types

template<> using value_type = T¶: Type of the scalar elements within this batch.

template<> using arch_type = A¶: SIMD Architecture abstracted by this batch.

template<> using register_type = typename types::simd_register::register_type¶: SIMD register type abstracted by this batch.

template<> using batch_bool_type = batch_bool<T, A>¶: Associated batch type used to represented logical operations on this batch.

Public Functions

batch()¶: Create a batch initialized with undefined values.

batch(T val)¶: Create a batch with all element initialized to val.

template <class… Ts>

batch(T val0, T val1, Ts... vals)¶

Create a batch with elements initialized from val0, val1, vals…

There must be exactly size elements in total.

batch(batch_bool_type const &b)¶

Converts a bool_batch to a batch where each element is set to 0xFF..FF (resp.

0x00..00) if the corresponding element is true (resp. false).

batch(register_type reg)¶

Wraps a compatible native simd register as a batch.

This is generally not needed but becomes handy when doing architecture-specific operations.

template <class U>

void store_aligned(U *mem) const¶

Copy content of this batch to the buffer mem.

The memory needs to be aligned.

template <class U>

void store_unaligned(U *mem) const¶

Copy content of this batch to the buffer mem.

The memory does not need to be aligned.

template <class U>
void store(U *mem, aligned_mode) const¶: Equivalent to batch::store_aligned()

template <class U>
void store(U *mem, unaligned_mode) const¶: Equivalent to batch::store_unaligned()

template <class U, class V>

void scatter(U *dst, batch<V, arch_type> const &index) const¶

Scatter elements from this batch into addresses starting at dst and offset by each element in index.

If T is not of the same size as U, a static_cast is performed at element scatter time.

T get(std::size_t i) const¶

Retrieve the i th scalar element in this batch.

warning This is very inefficient and should only be used for debugging purpose.

template <class U>
batch<T, A> broadcast(U val)¶: Equivalent to batch::batch(T val).

template <class U>

batch<T, A> load_aligned(U const *mem)¶

Loading from aligned memory.

May involve a conversion if U is different from T.

template <class U>

batch<T, A> load_unaligned(U const *mem)¶

Loading from unaligned memory.

May involve a conversion if U is different from T.

template <class U>
batch<T, A> load(U const *mem, aligned_mode)¶: Equivalent to batch::load_aligned()

template <class U>
batch<T, A> load(U const *mem, unaligned_mode)¶: Equivalent to batch::load_unaligned()

template <typename U, typename V>

batch<T, A> gather(U const *src, batch<V, A> const &index)¶

Create a new batch gathering elements starting at address src and offset by each element in index.

If T is not of the same size as U, a static_cast is performed at element gather time.

Public Static Attributes

constexpr std::size_t size = sizeof(types::simd_register<T, A>) / sizeof(T)¶: Number of scalar elements in this batch.

Friends

batch operator+(batch const &self, batch const &other)¶: Shorthand for xsimd::add()

batch operator-(batch const &self, batch const &other)¶: Shorthand for xsimd::sub()

batch operator*(batch const &self, batch const &other)¶: Shorthand for xsimd::mul()

batch operator/(batch const &self, batch const &other)¶: Shorthand for xsimd::div()

batch operator&(batch const &self, batch const &other)¶: Shorthand for xsimd::bitwise_and()

batch operator|(batch const &self, batch const &other)¶: Shorthand for xsimd::bitwise_or()

batch operator^(batch const &self, batch const &other)¶: Shorthand for xsimd::bitwise_xor()

batch operator&&(batch const &self, batch const &other)¶: Shorthand for xsimd::logical_and()

batch operator||(batch const &self, batch const &other)¶: Shorthand for xsimd::logical_or()

template <typename T, std::size_t N>

struct xsimd::make_sized_batch¶

type utility to select a batch of given type and size

If one of the available architectures has a native vector type of the given type and size, sets the type member to the appropriate batch type. Otherwise set its to void.

Template Parameters

T: the type of the underlying values.
N: the number of elements of that type in the batch.