[Boost-users] [Spirit] Building an expression parser with boost.spirit or any other

Hello all, There are several parsing tool libs in boost, say spirit and wave, pheonix, etc. But I am just not quite clear of the relation between each of them. I've skimmed through some of the documentation some time ago, but it seems to be too tough to me till now. My question is, giving the huge power of these libs, is it simple to construct an traditional expression parser which accepts formulea like: 1+2/3 sin(0.34)/power(tan(.4),3) and so on Or, preferably, is there already a sample program like this anywhere? Thanks for any hints. B/Rgds Max ------------------------------------------------------------------- 新浪空间——与朋友开心分享网络新生活！(http://space.sina.com.cn/ )