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(notes about UTF-16) |
(additional note) |
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| Ligne 8 : | Ligne 8 : | ||
If 2 code units, first one is in 0xD800-0xDBFF, second one is in 0xDC00-0xDFFF. | If 2 code units, first one is in 0xD800-0xDBFF, second one is in 0xDC00-0xDFFF. | ||
* First one: 6 fixed bits (0b110110) then 4 bits encoding the Unicode plan (minus one: 1-16 become 0-15) then 6 strong bits inside the plan | * First one: 6 fixed bits (0b110110) then 4 bits encoding the Unicode plan (minus one: 1-16 become 0-15) then 6 strong bits inside the plan - note that the plan number is splitted between the two last bits of the first byte and the two first bits of the second byte | ||
* Second one: 6 fixed bits (0b110111) then 10 bits inside the plan | * Second one: 6 fixed bits (0b110111) then 10 bits inside the plan | ||
Version du 11 septembre 2019 à 23:13
UTF-16
1 or 2 code units of 16 bits = 2 bytes
If 2 code units, first one is in 0xD800-0xDBFF, second one is in 0xDC00-0xDFFF.
- First one: 6 fixed bits (0b110110) then 4 bits encoding the Unicode plan (minus one: 1-16 become 0-15) then 6 strong bits inside the plan - note that the plan number is splitted between the two last bits of the first byte and the two first bits of the second byte
- Second one: 6 fixed bits (0b110111) then 10 bits inside the plan
Non-private astral planes 0x10000-0xEFFFF are encoded in UTF-16: [\uD800-\uDAFF\uDB00-\uDB7F][\uDC00-\uDFFF]
Astral planes are encoded in UTF-16: [\uD800-\uDBFF][\uDC00-\uDFFF]