TODO Remove when product is standard in Phobos.
Computes $(LUCKY Discrete Signal Entropy) of input range range.
Smootherstep from edge0 to edge1 at x.
Smoothstep from edge0 to edge1 at x.
TODO Issue 4725: Remove when sum is standard in Phobos. See also: http://d.puremagic.com/issues/show_bug.cgi?id=4725 See also: https://github.com/D-Programming-Language/phobos/pull/1205 See also: http://forum.dlang.org/thread/bug-4725-3@http.d.puremagic.com%2Fissues%2F