If the object of the course is to teach you (more about) C, that might not go down too well :-)
Its on computer aided research in maths. The choice of language is ours but the staff refuse to help with any project not written in C. I'm not sure what we're supposed to be learning but Haskell has seemed far more suitable than C for all the work I've done so far - I can't imagine doing the questions on set theory in C.
You can always define an infix version of == (maybe ~=~ or something) that is a bit sloppier in its comparisons, of course.
I think that may be the best solution in the short term. I'll look in Data.Ratio too, though it's not too useful here as I'm doing numerical integration. Most of the time the functions passed in will have exponentials, which means I'll always end up using floating point.
Like the other respondents said, floating point is nasty, best avoided when possible, and used with caution plus the advice of numerical experts when unavoidable.
I agree entirely. Unfortunately I'm supposed to be an expert. Thanks for your help. Jamie