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Where/When does Bit endianness matters?

Experts,

I am having below two queries related to endianness . Please help.

1) Bit endianness where/when it matters to be taken care of?
2)Will the BYTE endianness changes have any dependency to BIT endianess?

Basically, i wanted to know the BIT ENDIANNES

Infinity08

Bit endianness is only relevant if you are on a platform that can address bits separately, or if you're using a transmission protocol that sends bit per bit.

Are you in any of these situations ?

Kent Olsen

Endianness is also a factor when exchanging binary data (related to Infinity's comment of a transmission protocol), often times in emulation/simulation, or where it's important to know if the memory representation of a multi-byte item is the same as the register representation.

srimallikarthik

ASKER

i understood the transmission protocol scenario, can you add more detail about the "platform that can address bits separately". Is it like, processor architecture dependable? can you mention any platform where/when it address bits separately. This would be very helpful

srimallikarthik

ASKER

i am developing protocol stack currently, i am handling BYTE endianness currently to support multi platforms. Need to know whether i shld consider BIT endianness.

Kent Olsen

Hi srimallikarthik,

I don't believe that bit endianness is something to cause an issue. It would come into play only when the number 1 is stored so that only the leftmost bit of an object is set (a very odd computer indeed), or the quite rare (and generally quite old) computer where items can be addressed to the bit level.

Any benefit from coding for it will probably never be realized.

Kent

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Infinity08

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srimallikarthik

ASKER

Infinity08 & Kdo,

Thanks for posting