Segment-parse data bits

performs
segment parsing on the input `y`

= wlanSegmentParseBits(`bits`

,`cbw`

,`numES`

,`numCBPS`

,`numBPSCS`

) `bits`

as per IEEE^{®}
802.11ac™-2013, Section 22.3.10.7, when `cbw`

is
`'CBW16'`

or `'CBW160'`

.

Segment parsing of the bits applies only when the channel bandwidth is
either 16 MHz or 160 MHz, and is bypassed for the remaining channel
bandwidths (as stated in the aforementioned section of IEEE802.11ac-2013). Therefore, when `cbw`

is any
accepted value other than `'CBW16'`

or
`'CBW160'`

, ` wlanSegmentParseBits`

returns the input unchanged.