From: John Cowan (firstname.lastname@example.org)
Date: Mon Nov 11 2002 - 15:17:18 EST
John Hudson scripsit:
> One of the tools I use for building fonts requires that codepoints for
> Plane 1 characters be expressed as surrogate pairs, rather than as scalar
> values. I'm hoping this will change on the next release, since the scalar
> I need to figure
> out the easiest way to find the correct surrogate pair values for any given
> scalar value.
If you have access to any Windows box, you can use the Windows Calculator
(Start/Programs/Accessories/Calculator). Choose View/Scientific and
click on the Hex radio button. Then enter your 5-digit Unicode scalar value.
(You must type hex digits in lower case.) To get the high surrogate, type:
- 1 0 0 0 0 = / 4 0 0 + d 8 0 0 =
To get the low surrogate, enter the scalar value again and type:
- 1 0 0 0 0 = % 4 0 0 + d c 0 0 =
You can also use the mouse, in which case "%" above represents the MOD key.
On *ix systems, use the "bc" command; type "obase=16" and "ibase=16".
For this program, you must use capital letters for the hex digits.
To get the high surrogate, type "(xxxxx-10000)/400+DC00" for the high
surrogate ("xxxxx" is the scalar value); to get the low surrogate,
On the Macintosh, I have no clue.
-- John Cowan email@example.com "You need a change: try Canada" "You need a change: try China" --fortune cookies opened by a couple that I know
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