Floating Point Math in Bash Jul 30, 2008, 20 :30 UTC (0 Talkback[s]) (5586 reads) (Other stories by Mitch Frazier)
"By default bc outputs its result with no digits to the right of the decimal point and without a decimal point. To change this you have to change one of bc's builtin variables: scale. This is where the "language" features of bc are relevant, in bc as in C statements are separated by semi-colons."
