how to format the length of a floating point number?

[RajVerma]

hi all,

suppose I have a number like '20.45672987988776880' and I want to truncate all the characters after the second position after the decimal, that means I want to get '20.45' out of it, then what is the syntax? I want the numbers only with atmost 2 characters after the decimal. I'm getting long numbers with the following statement.

set phase [format "%f" [expr $d * 0.00000008381903171539306640625]

but I don't need the long answer after calculation.

thanx in adv,
Raj.

 

[Bong]

Instead of "%f", try "%5.2f"

Bob Rashkin
rrashkin@csc.com