Re: Speaking of Plane 1 characters...

From: Doug Ewell (dewell@adelphia.net)
Date: Tue Nov 12 2002 - 11:26:09 EST

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    Dominikus Scherkl <Dominikus dot Scherkl at glueckkanja dot com> wrote:

    > utf16high = 0xD7C0 + (utf32 >> 10);
    > utf16low = 0xDC00 + (utf32 & 1023);
    >
    > this is very easy to invert:
    >
    > utf32 = ((utf16high - 0xD7C0) <<10) + (utf16low & 1023);

    This is good, but I'd write hexadecimal 0x3FF instead of decimal 1023,
    as it shows the purpose of the bitmask a little more clearly.
    (Apologies to Karl Pentzlin, if he is still on this list.)

    -Doug Ewell
     Fullerton, California

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