How can I simply write a bpm in floating number in lilypond (e.g.♩ = 90.86 ) ?
It seems that \tempo accept only integers.
thanks
You can do pretty much any markup with the \tempo command. Two ways you can do this are either:
\tempo \markup { \note { 4 } #UP " = 90.86" }
or
\tempo \markup { \rhythm { 4 } " = 90.86" }
The \note function is a bit simpler and creates a note stencil that's a tad larger than what's produced by the \rhythm function. The \rhythm function, however, is far more flexible in what it can produce. More info on the \note function at:
and for the \rhythm function see:
One caveat to keep in mind is that \tempo entries done with \markup do not affect MIDI playback.