Basic functions

template<class X>
real_batch_type_t<X> xsimd::abs(const simd_base<X> &rhs)

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

Return

the asbolute values of rhs.

Parameters

  • rhs: batch of integer or floating point values.

template<class X>
batch_type_t<X> xsimd::fabs(const simd_base<X> &rhs)

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

Return

the asbolute values of rhs.

Parameters

  • rhs: batch floating point values.

template<class B>
batch_type_t<B> xsimd::fmod(const simd_base<B> &x, const simd_base<B> &y)

Computes the floating-point remainder of the division operation x/y.

The floating-point remainder of the division operation x/y calculated by this function is exactly the value x - n*y, where n is x/y with its fractional part truncated. The returned value has the same sign as x and is less than y in magnitude.

Return

the floating-point remainder of the division.

Parameters

  • x: batch of floating point values.

  • y: batch of floating point values.

template<class B>
batch_type_t<B> xsimd::remainder(const simd_base<B> &x, const simd_base<B> &y)

Computes the IEEE remainder of the floating point division operation x/y.

The IEEE floating-point remainder of the division operation x/y calculated by this function is exactly the value x - n*y, where the value n is the integral value nearest the exact value x/y. When |n-x/y| = 0.5, the value n is chosen to be even. In contrast to fmod, the returned value is not guaranteed to have the same sign as x. If the returned value is 0, it will have the same sign as x.

Return

the IEEE remainder remainder of the floating point division.

Parameters

  • x: batch of floating point values.

  • y: batch of floating point values.

template<class X>
batch_type_t<X> xsimd::fma(const simd_base<X> &x, const simd_base<X> &y, const simd_base<X> &z)

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

Return

the result of the fused multiply-add operation.

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.

template<class X>
batch_type_t<X> xsimd::fms(const simd_base<X> &x, const simd_base<X> &y, const simd_base<X> &z)

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

Return

the result of the fused multiply-sub operation.

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.

template<class X>
batch_type_t<X> xsimd::fnma(const simd_base<X> &x, const simd_base<X> &y, const simd_base<X> &z)

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

Return

the result of the fused negated multiply-add operation.

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.

template<class X>
batch_type_t<X> xsimd::fnms(const simd_base<X> &x, const simd_base<X> &y, const simd_base<X> &z)

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

Return

the result of the fused negated multiply-sub operation.

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.

template<class X>
batch_type_t<X> xsimd::min(const simd_base<X> &lhs, const simd_base<X> &rhs)

Returns the smaller values of the batches lhs and rhs.

Return

a batch of the smaller values.

Parameters

  • lhs: a batch of integer or floating point values.

  • rhs: a batch of integer or floating point values.

template<class X>
batch_type_t<X> xsimd::max(const simd_base<X> &lhs, const simd_base<X> &rhs)

Returns the larger values of the batches lhs and rhs.

Return

a batch of the larger values.

Parameters

  • lhs: a batch of integer or floating point values.

  • rhs: a batch of integer or floating point values.

template<class X>
batch_type_t<X> xsimd::fmin(const simd_base<X> &lhs, const simd_base<X> &rhs)
template<class X>
batch_type_t<X> xsimd::fmax(const simd_base<X> &lhs, const simd_base<X> &rhs)
template<class B>
batch_type_t<B> xsimd::fdim(const simd_base<B> &x, const simd_base<B> &y)

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

Return

the positive difference.

Parameters

  • x: batch of floating point values.

  • y: batch of floating point values.

Warning

doxygenfunction: Unable to resolve multiple matches for function “sadd” with arguments ((const simd_base<B>&, const simd_base<B>&)) in doxygen xml output for project “xsimd” from directory: ../xml. Potential matches: 

- batch_type sadd(const batch_type &lhs, const batch_type &rhs)
- template<class X> batch_type_t<X> sadd(const simd_base<X> &lhs, const simd_base<X> &rhs)
- template<class X> batch_type_t<X> sadd(const simd_base<X> &lhs, const typename simd_batch_traits<X>::value_type &rhs)
- template<class X> batch_type_t<X> sadd(const typename simd_batch_traits<X>::value_type &lhs, const simd_base<X> &rhs)
- template<typename T, class = typename std::enable_if<std::is_scalar<T>::value>::type> T sadd(const T &lhs, const T &rhs)

Warning

doxygenfunction: Unable to resolve multiple matches for function “ssub” with arguments ((const simd_base<B>&, const simd_base<B>&)) in doxygen xml output for project “xsimd” from directory: ../xml. Potential matches: 

- batch_type ssub(const batch_type &lhs, const batch_type &rhs)
- template<class X> batch_type_t<X> ssub(const simd_base<X> &lhs, const simd_base<X> &rhs)
- template<class X> batch_type_t<X> ssub(const simd_base<X> &lhs, const typename simd_batch_traits<X>::value_type &rhs)
- template<class X> batch_type_t<X> ssub(const typename simd_batch_traits<X>::value_type &lhs, const simd_base<X> &rhs)
- template<typename T, class = typename std::enable_if<std::is_scalar<T>::value>::type> T ssub(const T &lhs, const T &rhs)
template<class B>
batch_type_t<B> xsimd::clip(const simd_base<B> &x, const simd_base<B> &lo, const simd_base<B> &hi)

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

Return

the result of the clipping.

Parameters

  • x: batch of floating point values.

  • lo: batch of floating point values.

  • hi: batch of floating point values.