Complex C64 conjugation on interleaved storage.

Returns the complex conjugate of an interleaved complex64 vector by negating every imaginary component (every odd-indexed float) and leaving the real components untouched. Implemented as a vDSP_vneg over the stride-2 imaginary view.

Math

$\text{out}_i = \overline{a_i} = \mathrm{Re}(a_i) - i \, \mathrm{Im}(a_i)$

References

Accelerate.framework vDSP_vneg.