From: Josselin <josselin@...>
Date: 2007-03-09T16:50:08+09:00
Subject: 2 lines in one...

Could I write it in just 1 line ?

find the first value greater than d, in a list (special one :  each 
value is the double of the previous...)
then give me the index of this value (with special case ...)

      i = 
([0.5,1.0,2.0,4.0,8.0,16.0,32.0,64.0,128.0,256.0,512.0,1024.0,2048.0].select 
{|v| v if v >= d }).first

      zl = d <0.5  ? 0 : 
[0.5,1.0,2.0,4.0,8.0,16.0,32.0,64.0,128.0,256.0,512.0,1024.0,2048.0].index(i)

joss