From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 11 Dec 2019 04:41:28 +0000 (-0800)
Subject: Improve tv_nsec doc
X-Git-Tag: emacs-27.0.90~382
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=eb7df2a4e304c7e2c35eb4df63056c98ee6324e9;p=emacs.git

Improve tv_nsec doc

* doc/lispref/internals.texi (Module Values):
Document tv_nsec more accurately.
---

diff --git a/doc/lispref/internals.texi b/doc/lispref/internals.texi
index 013504680bb..eed9cb0a109 100644
--- a/doc/lispref/internals.texi
+++ b/doc/lispref/internals.texi
@@ -1528,8 +1528,11 @@ following members:
 @item time_t tv_sec
 Whole number of seconds.
 @item long tv_nsec
-Fractional seconds as number of nanoseconds, always less than one
-billion.
+Fractional seconds as a number of nanoseconds.
+For timestamps returned by @code{extract_time},
+this is always nonnegative and less than one billion.
+(Although POSIX requires the type of @code{tv_nsec} to be @code{long},
+the type is @code{long long} on some nonstandard platforms.)
 @end table
 
 @noindent