Miscellaneous

Sign manipulation:

sign()	per slot sign extraction
signnz()	per slot sign extraction on non null elements
bitofsign()	per slot sign bit extraction
copysign()	per slot sign copy

Stream operation:

operator<<()

batch pretty-printing

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template<class T, class A> XSIMD_INLINE batch< T, A > bitofsign (batch< T, A > const &x) noexcept

Computes the bit of sign of x.

Parameters:

x – batch of scalar

Returns:

bit of sign of x

template<class T, class A> XSIMD_INLINE batch< T, A > copysign (batch< T, A > const &x, batch< T, A > const &y) noexcept

Computes a value whose absolute value matches that of x, but whose sign bit matches that of y.

Parameters:

• x – batch of scalars

• y – batch of scalars

Returns:

batch whose absolute value matches that of x, but whose sign bit matches that of y.

template<class T, class A> XSIMD_INLINE batch< T, A > select (batch_bool< T, A > const &cond, batch< T, A > const &true_br, batch< T, A > const &false_br) noexcept

Ternary operator for batches: selects values from the batches true_br or false_br depending on the boolean values in the constant batch cond.

Equivalent to

for(std::size_t i = 0; i < N; ++i)
    res[i] = cond[i] ? true_br[i] : false_br[i];

Parameters:

• cond – batch condition.

• true_br – batch values for truthy condition.

• false_br – batch value for falsy condition.

Returns:

the result of the selection.

template<class T, class A> XSIMD_INLINE batch< std::complex< T >, A > select (batch_bool< T, A > const &cond, batch< std::complex< T >, A > const &true_br, batch< std::complex< T >, A > const &false_br) noexcept

Ternary operator for batches: selects values from the batches true_br or false_br depending on the boolean values in the constant batch cond.

Equivalent to

for(std::size_t i = 0; i < N; ++i)
    res[i] = cond[i] ? true_br[i] : false_br[i];

Parameters:

• cond – batch condition.

• true_br – batch values for truthy condition.

• false_br – batch value for falsy condition.

Returns:

the result of the selection.

template<class T, class A, bool... Values> XSIMD_INLINE batch< T, A > select (batch_bool_constant< T, A, Values... > const &cond, batch< T, A > const &true_br, batch< T, A > const &false_br) noexcept

Ternary operator for batches: selects values from the batches true_br or false_br depending on the boolean values in the constant batch cond.

Equivalent to

for(std::size_t i = 0; i < N; ++i)
    res[i] = cond[i] ? true_br[i] : false_br[i];

Parameters:

• cond – constant batch condition.

• true_br – batch values for truthy condition.

• false_br – batch value for falsy condition.

Returns:

the result of the selection.

template<class T, class A> XSIMD_INLINE batch< T, A > sign (batch< T, A > const &x) noexcept

Computes the sign of x.

Parameters:

x – batch

Returns:

-1 for each negative element, -1 or +1 for each null element and +1 for each element

template<class T, class A> XSIMD_INLINE batch< T, A > signnz (batch< T, A > const &x) noexcept

Computes the sign of x, assuming x doesn’t have any zero.

Parameters:

x – batch

Returns:

-1 for each negative element, -1 or +1 for each null element and +1 for each element

template<class T, class A> XSIMD_INLINE std::ostream & operator<< (std::ostream &o, batch< T, A > const &x) noexcept

Dump the content of batch x to stream o.

Parameters:

• o – the stream where the batch is dumped

• x – batch to dump.

Returns:

a reference to o

template<class T, class A> XSIMD_INLINE std::ostream & operator<< (std::ostream &o, batch_bool< T, A > const &x) noexcept

Dump the content of batch x to stream o.

Parameters:

• o – the stream where the batch is dumped

• x – batch to dump.

Returns:

a reference to o