From: Josselin <josselin@...>
Date: 2007-05-23T23:24:55+09:00
Subject: printing float to string with decimal rounding

I am trying to print a float result in a string but I can get it right

I get float numbers like :
distance =  0.2568915421 , 1.2568910001,  20.3256941254   (8 decimals)

I wrote
    d = (distance.*1000).round/1000.0     # to get something like  0.257
    return "(- de 500m)" if d < 0.500
    return "( - de 1km)" if d < 1.0
    return "(env. " + d.to_s + " km)"

if d > 1.0   i print   "env. 1.257 km"
I'd like to print "env. 1.2 km"  shoudl I round it again ? or is there 
any DRY solution ?

thanks

joss