Given that there's no digit for zero, you need to append combining characters to digits 1-9 in order to multiply them by a base 10/100/1,000/10,000/100,000/1,000,000. The system is then additive. I don't know how zero is represented. Note that for base 10, when the first digit is 1 (i.e. for numbers 11-19), the combining character is not 1E8D1 (TENS) but 1E8D0 (TEENS), i.e. the slash-like glyph. But the description says that TEENS is only for numbers 11-19, not for number 10.
But I agree that there should be a reference in http://www.unicode.org/charts/PDF/U1E800.pdf, to the description in http://www.unicode.org/versions/Unicode8.0.0/ch19.pdf (section 19.8, pages 722-723) that would explain how to render 10 (add some rows in table 19-6 for the numbers 10/100/.../1,000,000). This leaves a hole in the description. I'm not sure that the glyph for PU is exactly the glyph for 10. Or what is the appropriate sequence: ONE+TENS (1E8C7,1E8D1) or ONE+TEENS (1E8C7,1E8D0) ? The description is ambiguous, and probably both sequences should produce the equivalent glyph. However the letter PU (when meaning number 10) looks more like the glyph produced by ONE+TEN (1E8C7,1E8D1). Then how to represent zero ? Probably by a syllable or word meaning "none" (don't know which it is), or by using European or Arabic digits (as indicated in Chapter 19). 2016-06-10 8:15 GMT+02:00 Andrew Cunningham <[email protected]>: > Ok looking at issue again I guess the other alternative is to have a > discontiguous set of numbers. Represent 10 as U+1E8C7 U+1E8D1 and map it > within the font to the PU glyph. > > And hope that font developers don't create a glyph based on shape of > U+1E8C7 and U+1E8D1, but PU instead. > > Andrew > > > On Friday, 10 June 2016, Andrew Cunningham <[email protected]> wrote: > > Hi, > > Currently I am doing some work on the Mende Kikakui script, and I was > wondering what the best way was to represent the number 10. > > In the early proposals for the script there was a glyph and codepoint > specifically for the number 10. When the model for Mende Kikakui numbers > was changed before the finalising of the code block, the number ten was > removed. But using existing digits and numbers we can produce 1-9 and 11 -> > but we can not produce the number 10 from digits and numbers. > > The number ten uses the same glyph as syllable PU U+1E88E. > > Should I use U+1E88E to represent both the number 10 and the syllable PU? > > Andrew > > > > -- > > Andrew Cunningham > > [email protected] > > > > > > > > -- > Andrew Cunningham > [email protected] > > > >
