Miscellaneous¶
-
template<class
T
, classA
>
batch<T, A>xsimd
::
bitofsign
(batch<T, A> const &x)¶ Computes the bit of sign of
x
.- Return
- bit of sign of
x
- Parameters
x
: batch of scalar
-
template<class
T
, classA
>
batch<T, A>xsimd
::
copysign
(batch<T, A> const &x, batch<T, A> const &y)¶ Computes a value whose absolute value matches that of
x
, but whose sign bit matches that ofy
.- Return
- batch whose absolute value matches that of
x
, but whose sign bit matches that ofy
. - Parameters
x
: batch of scalarsy
: batch of scalars
-
template<class
T
, classA
>
batch<T, A>xsimd
::
select
(batch_bool<T, A> const &cond, batch<T, A> const &true_br, batch<T, A> const &false_br) Ternary operator for batches: selects values from the batches
true_br
orfalse_br
depending on the boolean values in the constant batchcond
.Equivalent to
for(std::size_t i = 0; i < N; ++i) res[i] = cond[i] ? true_br[i] : false_br[i];
- Return
- the result of the selection.
- Parameters
cond
: batch condition.true_br
: batch values for truthy condition.false_br
: batch value for falsy condition.
-
template<class
T
, classA
>
batch<std::complex<T>, A>xsimd
::
select
(batch_bool<T, A> const &cond, batch<std::complex<T>, A> const &true_br, batch<std::complex<T>, A> const &false_br) Ternary operator for batches: selects values from the batches
true_br
orfalse_br
depending on the boolean values in the constant batchcond
.Equivalent to
for(std::size_t i = 0; i < N; ++i) res[i] = cond[i] ? true_br[i] : false_br[i];
- Return
- the result of the selection.
- Parameters
cond
: batch condition.true_br
: batch values for truthy condition.false_br
: batch value for falsy condition.
-
template<class
T
, classA
, bool...Values
>
batch<T, A>xsimd
::
select
(batch_bool_constant<batch<T, A>, Values...> const &cond, batch<T, A> const &true_br, batch<T, A> const &false_br) Ternary operator for batches: selects values from the batches
true_br
orfalse_br
depending on the boolean values in the constant batchcond
.Equivalent to
for(std::size_t i = 0; i < N; ++i) res[i] = cond[i] ? true_br[i] : false_br[i];
- Return
- the result of the selection.
- Parameters
cond
: constant batch condition.true_br
: batch values for truthy condition.false_br
: batch value for falsy condition.
-
template<class
T
, classA
>
batch<T, A>xsimd
::
sign
(batch<T, A> const &x)¶ Computes the sign of
x
.- Return
- -1 for each negative element, -1 or +1 for each null element and +1 for each element
- Parameters
x
: batch
-
template<class
T
, classA
>
batch<T, A>xsimd
::
signnz
(batch<T, A> const &x)¶ Computes the sign of
x
, assuming x doesn’t have any zero.- Return
- -1 for each negative element, -1 or +1 for each null element and +1 for each element
- Parameters
x
: batch