Basic functions

template<class T, class A>
inline batch<T, A> xsimd::abs(batch<T, A> const &x) noexcept

Computes the absolute values of each scalar in the batch x.

Parameters

x – batch of integer or floating point values.

Returns

the absolute values of x.

template<class T, class A>
inline batch<T, A> xsimd::fabs(batch<T, A> const &x) noexcept

Computes the absolute values of each scalar in the batch x.

Parameters

x – batch floating point values.

Returns

the absolute values of x.

template<class T, class A>
inline batch<T, A> xsimd::fmod(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the modulo of the batch x by the batch y.

Parameters
  • x – batch involved in the modulo.

  • y – batch involved in the modulo.

Returns

the result of the modulo.

template<class T, class A>
inline batch<T, A> xsimd::remainder(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the remainder of dividing x by y.

Parameters
  • x – batch of scalar values

  • y – batch of scalar values

Returns

the result of the addition.

template<class T, class A>
inline batch<T, A> xsimd::fma(batch<T, A> const &x, batch<T, A> const &y, batch<T, A> const &z) noexcept

Computes (x*y) + z in a single instruction when possible.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

  • z – a batch of integer or floating point values.

Returns

the result of the fused multiply-add operation.

template<class T, class A>
inline batch<T, A> xsimd::fms(batch<T, A> const &x, batch<T, A> const &y, batch<T, A> const &z) noexcept

Computes (x*y) - z in a single instruction when possible.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

  • z – a batch of integer or floating point values.

Returns

the result of the fused multiply-sub operation.

template<class T, class A>
inline batch<T, A> xsimd::fnma(batch<T, A> const &x, batch<T, A> const &y, batch<T, A> const &z) noexcept

Computes -(x*y) + z in a single instruction when possible.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

  • z – a batch of integer or floating point values.

Returns

the result of the fused negated multiply-add operation.

template<class T, class A>
inline batch<T, A> xsimd::fnms(batch<T, A> const &x, batch<T, A> const &y, batch<T, A> const &z) noexcept

Computes -(x*y) - z in a single instruction when possible.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

  • z – a batch of integer or floating point values.

Returns

the result of the fused negated multiply-sub operation.

template<class T, class A>
inline batch<T, A> xsimd::min(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the smaller values of the batches x and y.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

Returns

a batch of the smaller values.

template<class T, class A>
inline batch<T, A> xsimd::max(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the larger values of the batches x and y.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

Returns

a batch of the larger values.

template<class T, class A>
inline batch<T, A> xsimd::fmin(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the smaller values of the batches x and y.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

Returns

a batch of the smaller values.

template<class T, class A>
inline batch<T, A> xsimd::fmax(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the larger values of the batches x and y.

Parameters
  • x – a batch of integer or floating point values.

  • y – a batch of integer or floating point values.

Returns

a batch of the larger values.

template<class T, class A>
inline batch<T, A> xsimd::fdim(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the positive difference between x and y, that is, max(0, x-y).

Parameters
  • x – batch of floating point values.

  • y – batch of floating point values.

Returns

the positive difference.

template<class T, class A>
inline batch<T, A> xsimd::sadd(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the saturate sum of the batch x and the batch y.

Template Parameters

X – the actual type of batch.

Parameters
  • x – batch involved in the saturated addition.

  • y – batch involved in the saturated addition.

Returns

the result of the saturated addition.

template<class T, class A>
inline batch<T, A> xsimd::ssub(batch<T, A> const &x, batch<T, A> const &y) noexcept

Computes the saturate difference of the batch x and the batch y.

Template Parameters

X – the actual type of batch.

Parameters
  • x – batch involved in the saturated difference.

  • y – batch involved in the saturated difference.

Returns

the result of the saturated difference.

template<class T, class A>
inline batch<T, A> xsimd::clip(batch<T, A> const &x, batch<T, A> const &lo, batch<T, A> const &hi) noexcept

Clips the values of the batch x between those of the batches lo and hi.

Parameters
  • x – batch of scalar values.

  • lo – batch of scalar values.

  • hi – batch of scalar values.

Returns

the result of the clipping.