symbolic multiplication
mulf(d, c)
character strings.
mulf('d', 'c') performs the symbolic multiplication and returns the string 'c*d'. Trivial simplifications such as '1*c' = 'c' are performed.
mulf('d', 'c')
'c*d'
'1*c' = 'c'
mulf('1','a') mulf('0','a') 'a'*'b' //Caution...