markup language with formulae and html + LaTeX output

I'd like to create a software manual with some kind of markup language. I need HTML and LaTeX output. The markup language must support math formulae (basic ones, including fractions). Which markup language do you suggest? I have tried asciidoc (no forumlae except for the LaTeX filter, but the output is extremely bad with LaTeX output) and textile,markdown. (no formulae?).

The input 开发者_Python百科should be easy, so inserting a MathML formula is not a good option IMO.

What about doxygen it does support formuals?