- fpprobability? x #!optional log?procedure
- x
- flonum
- log?
- boolean
When log? is #f, returns #t when (<= 0.0 x 1.0). When log? is #t, returns #t when (<= -inf.0 x 0.0)
Examples:
> (fpprobability? -0.1) #f > (fpprobability? 0.5) #t > (fpprobability? +nan.0 #t) #f