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# bit by bit - bitweise

Correction

tech. -

## bitweise

Examples/ definitions with source references
Can I leave this section to the linguists?
Comment
In English, "bit by bit" means "gradually". Unless the German word "bitweise" can also mean "gradually", this entry is wrong.

There is a technical term "bitwise", occasionally hyphenated as "bit-wise" which has to do with boolean logical operations but which I would not wish to attempt to define here. Nevertheless, I believe that the correct German expression for this is "bitweise".

At present, "bitwise" does not appear in Leo, and the entry offering "bit by bit" as a translation of "bitweise" seems to have led to an error in a draft international standard which I am currently proof-reading.
AuthorJoe W03 Sep 10, 11:41
Comment 100% supported.
Context/ examples http://www.itl.nist.gov/fipspubs/fip46-2.htmwhere (+) denotes bit-by-bit addition modulo 2http://www.freepatentsonline.com/5099414.htmlThis bit pattern is equal to the bit-by-bit AND function of: http://www.freepatentsonline.com/4191970.htmlmeans including said storing means for forming the bit-by-bit exclusive-OR function of a signal representing said previous-frame block with said difference word signal I am not sure. There are numerous instances of "bit-by-bit" (hyphenated as opposed to three separate words) being used in relevant literature, meaning "bitwise". I have tried to find examples written by probable native speakers of English. FWIW, the first example above is from the DES standard.I would support a proposal for a new dictionary entry "bitwise (adj) = bit-weise", with proper references of course.
Suggestions

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## bitweise, Bit für Bit

Context/ examples
A serial memory is one in which data is written and read one bit after the other.

In computer programming, a b i t w i s e operation operates on one or two bit patterns or binary numerals at the level of their individual bits. On most microprocessors, bitwise operations are usually slightly faster than addition and subtraction operations and usually significantly faster than multiplication and division operations.

http://encyclopedia.thefreedictionary.com/Bit...
Comment
ein Bit nach dem anderen
#3Authorw03 Sep 10, 18:32
Suggestions

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## bitweise

Comment
"Bitwise" does not usually refer to a situation in which data is processed one bit after the other. More often than not, it refers to an operation in which many bits are processed simultaneously.
#4AuthorJoe W03 Sep 10, 19:10
Comment I think we should separate out two issues here. "bitwise (adj) = bitweise" is a valid translation missing from LEO and thus a case for the "New Entry" forum. As Joe says, it usually refers to parallel, per-bit pairwise operations like bit-AND, bit-XOR on data words.The second issue is whether the existing entry merely needs to have its spelling fixed (as an adjective, it should be hyphenated as "bit-by-bit") or whether it is plain wrong. My initial thought was that "bit-by-bit" is at best used in serial, or online, processing where items are processed one bit at a time. However, a quick Google search convinced me that "bit-by-bit" is used in credible sources by what are presumably native speakers of English to refer to bitwise operations on data words, i.e. parallel not serial processing. So at present I believe that the entry needs to be corrected with regard to spelling, rather than replaced or deleted.
Comment I think the entry as stands is fine, it just should be marked [comp.],like the other entry here:Dictionary: bitweiseThe typical meaning of bit-by-bit this is not.For a different language perspective:peu à peuDictionary: peu a peu
Suggestions

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## bitweise

Comment
It seems to me that the principal issue here is this: What is a native German speaker seeking to translate the German word"bitweise" to do? (It would seem that if he is trying to translate into French, then Leo isn't much help; see Dictionary: bitweise !)

Assuming that the target language is English, the expression of choice is "bitwise" (almost certainly the etymological origin of bitweise anyway). Whilst it is evidently true that the term "bit-by-bit" is also in use with essentially the same meaning, its not the usual expression.

Even if "bit by bit" is changed to "bit-by-bit" and "bitwise" is added, you still only have a partial solution to the original problem.
#7AuthorJoe W06 Sep 10, 12:32
Suggestions

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## bitweise

Comment
In my last entry, for "its", please read "it is". That was a typographical error, not a display of ignorance of grammar!
#8AuthorJoe W06 Sep 10, 12:35
Suggestions

comp. -

## bitweise

Context/ examples
Comment
AFAIC, 'bit by bit' means one bit after the other (sequentially, cf. 'step by step'), whereas 'bitwise' means each bit separately (possibly in parallel). This translates to "Bit für Bit" vs. "bitweise".

Of course you can use 'bit by bit'/'Bit für Bit' and people will have an idea what you mean but I haven't encountered these terms as established terminology. In contrast, 'bitwise'/'bitweise' are widely used. (See the MathWorld links.)

Therefore: correction supported. At the very least, the entry should be tagged [comp.] or [tech.]
#9Authororeg (353563) 06 Sep 10, 21:08

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