Sometimes using bash $(()) math might not be enough due to some limitation (big numbers), so add helper using 'bc' program. For now the results are only in perfect numbers (as in bash) since this is all I need for now. Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx> --- v3: Nothing has changed common.rc | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/common.rc b/common.rc index 35f782b..b0e0c6a 100644 --- a/common.rc +++ b/common.rc @@ -20,6 +20,20 @@ # Mountain View, CA 94043, USA, or: http://www.sgi.com #----------------------------------------------------------------------- +BC=$(which bc 2> /dev/null) || BC= + +_math() { + if [ $# -le 0 ]; then + return + fi + if [ "$BC" ]; then + result=$(LANG=C echo "scale=0; $@" | "$BC" -q 2> /dev/null) + else + result=$(($@)) + fi + echo "$result" +} + dd() { if [ "$HOSTOS" == "Linux" ] -- 1.7.4.4 _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
