grammar, use warningf

Author: MichaelChirico

NEWS.md

@@ -4,7 +4,7 @@
 
 ## BREAKING CHANGE
 
-1. Rolling functions `frollmean` and `frollsum` used to treat `Inf` and `-Inf` as `NA` when using default `algo="fast"`. It has been changed now and infinity values are not treated as `NA` anymore. If your input into those functions has `Inf` or `-Inf` then you will be affected by this change.
+1. Rolling functions `frollmean` and `frollsum` used to treat `Inf` and `-Inf` as `NA` when using default `algo="fast"`. It has been changed now and infinite values are not treated as `NA` anymore. If your input into those functions has `Inf` or `-Inf` then you will be affected by this change.
 
 ## NEW FEATURES
 

R/froll.R

@@ -37,7 +37,7 @@ partial2adaptive = function(x, n, align) {
 froll = function(fun, x, n, fill=NA, algo=c("fast","exact"), align=c("right","left","center"), na.rm=FALSE, has.nf=NA, adaptive=FALSE, partial=FALSE, hasNA) {
   stopifnot(!missing(fun), is.character(fun), length(fun)==1L, !is.na(fun))
   if (!missing(hasNA)) {
-    warning("hasNA is deprecated, use has.nf instead")
+    warningf("hasNA is deprecated, use has.nf instead")
     if (missing(has.nf)) has.nf = hasNA
   } # remove check on next major release
   algo = match.arg(algo)