batch

template<class T, class A>
class batch : public types::simd_register<T, A>, public xsimd::types::integral_only_operators<T, A>

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.

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 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.