splines is Suggests

[MichaelChirico]

As it's used here:

bbmle/R/profile.R

Lines 365 to 369 in 7e8bbc0

	sp <- splines::interpSpline(yvals, obj[[i]]$z,
	na.action=na.omit)
	avals <- rbind(avals,as.data.frame(predict(sp)))
	avals <- avals[order(avals$x),]
	bsp <- try(splines::backSpline(sp),silent=TRUE)