distinguishing usual numbers, infinities and NaN
Wednesday, May 30th, 2007In a Scheme program, I need to distinguish infinities and NaN values. In Guile, it’s simple, it’s just the functions inf? and nan?. But when I took another implementation, I got troubles. I spent a lot of time and tried everything — =, eq?, equal?, but nothing helped. Fortunately, after a break, I found a simple universal solution.
