Jason Rhinelander d4653c6624 Use nextafter to push values down into [0,1) range ...

Without this, we can get values of 1, but that leads to negative
infinity from the following log; if we push the x1 value towards 0, we
ensure that (one-x1) is always a value in (0,1], and so the log value
will be in (-inf, 0], which is what we want.

2016-04-22 19:27:47 -04:00

..

boost

Use nextafter to push values down into [0,1) range

2016-04-22 19:27:47 -04:00