From ed71262bc258311690e7761154f8413465d9c78e Mon Sep 17 00:00:00 2001 From: Jim Meyering Date: Tue, 20 Dec 2011 14:39:57 +0100 Subject: [PATCH] doc: improve factor example * doc/coreutils.texi (factor invocation): Adjust example to use $(...) consistently, not a mix of `...` and $(...). Separate the computation of the product and the actual factorization, so the timing of the latter doesn't include the cost of the former. --- doc/coreutils.texi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/doc/coreutils.texi b/doc/coreutils.texi index c26a53d..c229f98 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -15964,8 +15964,10 @@ Factoring the product of the eighth and ninth Mersenne primes takes about 30 milliseconds of CPU time on a 2.2 GHz Athlon. @example -M8=`echo 2^31-1|bc` ; M9=`echo 2^61-1|bc` -/usr/bin/time -f '%U' factor $(echo "$M8 * $M9" | bc) +M8=$(echo 2^31-1|bc) +M9=$(echo 2^61-1|bc) +n=$(echo "$M8 * $M9" | bc) +/usr/bin/time -f %U factor $n 4951760154835678088235319297: 2147483647 2305843009213693951 0.03 @end example -- 2.7.4