3.9.4 SWRITEF

U.SWRITEF(ios, tmpl, args) ! IOS,Str,Vec => Num

Format the arguments contained in the vector 'args' using

STR.FORMAT(buffer, tmpl, args)

where 'buffer' is an internal buffer of the length UTIL.BUFLEN. The buffer is then sent to the output stream 'ios'.

SWRITEF returns the number of characters written using IOSTREAM.WRITE.