/usr/share/ngraph-gtk/addin/math.nsc is in ngraph-gtk-addins 6.06.13-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | # math.nsc written by S. ISHIZAKA. 1997/12
#
# Line-calculator using shell-builtin command "dexpr".
#
# Description: _Math...,calculator,
set +e
new dialog
MATH=""
while true
do
dialog::caption='Input mathematical expression'
MATH=`get dialog -field input:"$MATH"`
if [ -z "$MATH" ]
then
break
fi
if result=`dexpr "$MATH"`
then
new text
result=`get text -field printf:"%G $result"`
del text
dialog::message:"$MATH=$result"
menu::echo:"Math: $MATH=$result"
break
fi
done
del dialog
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