From c4f59bcf1fddba7cd6f9aa7de0320011048f1074 Mon Sep 17 00:00:00 2001 From: Eli Zaretskii Date: Tue, 19 Feb 2002 11:07:20 +0000 Subject: [PATCH] Document the optional second arg of `atan'. --- etc/NEWS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/etc/NEWS b/etc/NEWS index 6ab8d2b2bcb..00f15dfd5b6 100644 --- a/etc/NEWS +++ b/etc/NEWS @@ -625,6 +625,13 @@ and the latter now controls scrolling down. This is like window-height but does not count the mode line or the header line. ++++ +** The function `atan' now accepts an optional second argument. + +When called with 2 arguments, as in `(atan Y X)', `atan' returns the +angle in radians between the vector [X, Y] and the X axis. (This is +equivalent to the standard C library function `atan2'.) + +++ ** You can now make a window as short as one line. -- 2.39.2