Janek Warchoł <janek.lilyp...@gmail.com> writes:
> 2013/9/18 David Kastrup <d...@gnu.org>:
>> Janek Warchoł <janek.lilyp...@gmail.com> writes:
>>> Now, i would like to be able to supply a decimal number and have it
>>> converted to a rational number (i.e. a fraction, which can be easily
>>> converted to a moment)
>>
>> How did you search? It's right in the GUILE manual where one would
>> expect, with rational numbers.
>
> I've grepped through LilyPond sources for various keywords, and looked
> around definitions of other conversions.
> I guess i should add guile manual to my RTFM list.
>
> In the meantime, i have trouble with converting from a fraction to a
> moment - this returns an error:
>
> \version "2.16.2"
>
> foof =
> #(define-music-function (parser location) ()
> #{
> \override Score.SpacingSpanner.common-shortest-duration =
> #(fraction->moment (1 32))
> #})
(1 32) tries to call 1 with 32 as its argument. Just write
#(ly:make-moment 1/32)
and be done. If you really, really don't remember how LilyPond
represents fractions and you really, really want to use
fraction->moment, you can write
#(fraction->moment #{ 1/32 #})
> i'm probably doing something stupid here...
Depends on your level of Scheme knowledge.
--
David Kastrup
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